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2023-12-01powerpc: Add PVN support for HeXin C2000 processorZhao Ke
HeXin Tech Co. has applied for a new PVN from the OpenPower Community for its new processor C2000. The OpenPower has assigned a new PVN and this newly assigned PVN is 0x0066, add pvr register related support for this PVN. Signed-off-by: Zhao Ke <ke.zhao@shingroup.cn> Link: https://discuss.openpower.foundation/t/how-to-get-a-new-pvr-for-processors-follow-power-isa/477/10 Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231129075845.57976-1-ke.zhao@shingroup.cn
2023-10-25cxl: make cxl_class constantGreg Kroah-Hartman
Now that the driver core allows for struct class to be in read-only memory, we should make all 'class' structures declared at build time placing them into read-only memory, instead of having to be dynamically allocated at runtime. Cc: Andrew Donnellan <ajd@linux.ibm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: linuxppc-dev@lists.ozlabs.org Acked-by: Frederic Barrat <fbarrat@linux.ibm.com> Link: https://lore.kernel.org/r/2023102434-haiku-uphill-0c11@gregkh Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-09-01Merge tag 'char-misc-6.6-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the big set of char/misc and other small driver subsystem changes for 6.6-rc1. Stuff all over the place here, lots of driver updates and changes and new additions. Short summary is: - new IIO drivers and updates - Interconnect driver updates - fpga driver updates and additions - fsi driver updates - mei driver updates - coresight driver updates - nvmem driver updates - counter driver updates - lots of smaller misc and char driver updates and additions All of these have been in linux-next for a long time with no reported problems" * tag 'char-misc-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (267 commits) nvmem: core: Notify when a new layout is registered nvmem: core: Do not open-code existing functions nvmem: core: Return NULL when no nvmem layout is found nvmem: core: Create all cells before adding the nvmem device nvmem: u-boot-env:: Replace zero-length array with DECLARE_FLEX_ARRAY() helper nvmem: sec-qfprom: Add Qualcomm secure QFPROM support dt-bindings: nvmem: sec-qfprom: Add bindings for secure qfprom dt-bindings: nvmem: Add compatible for QCM2290 nvmem: Kconfig: Fix typo "drive" -> "driver" nvmem: Explicitly include correct DT includes nvmem: add new NXP QorIQ eFuse driver dt-bindings: nvmem: Add t1023-sfp efuse support dt-bindings: nvmem: qfprom: Add compatible for MSM8226 nvmem: uniphier: Use devm_platform_get_and_ioremap_resource() nvmem: qfprom: do some cleanup nvmem: stm32-romem: Use devm_platform_get_and_ioremap_resource() nvmem: rockchip-efuse: Use devm_platform_get_and_ioremap_resource() nvmem: meson-mx-efuse: Convert to devm_platform_ioremap_resource() nvmem: lpc18xx_otp: Convert to devm_platform_ioremap_resource() nvmem: brcm_nvram: Use devm_platform_get_and_ioremap_resource() ...
2023-08-24cxl: Drop unused detach_spa()Michael Ellerman
Clang warns: drivers/misc/cxl/native.c:272:20: error: unused function 'detach_spa' [-Werror,-Wunused-function] It was created as part of some refactoring in commit 05155772f642 ("cxl: Allocate and release the SPA with the AFU"), but has never been called in its current form. Drop it. Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230823044803.737175-1-mpe@ellerman.id.au
2023-08-16cxl: Use pci_find_vsec_capability() to simplify the codeXiongfeng Wang
PCI core add pci_find_vsec_capability() to query VSEC. We can use that core API to simplify the code. The only logical change is that pci_find_vsec_capability check the Vendor ID before finding the VSEC. PCI spec rev 5.0 says in 7.9.5.2 Vendor-Specific Header: VSEC ID - This field is a vendor-defined ID number that indicates the nature and format of the VSEC structure Software must qualify the Vendor ID before interpreting this field. Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com> Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230804075630.186054-1-wangxiongfeng2@huawei.com
2023-08-04misc: Explicitly include correct DT includesRob Herring
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Acked-by: Andrew Donnellan <ajd@linux.ibm.com> # cxl Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230718143102.1065481-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-17driver core: class: remove module * from class_create()Greg Kroah-Hartman
The module pointer in class_create() never actually did anything, and it shouldn't have been requred to be set as a parameter even if it did something. So just remove it and fix up all callers of the function in the kernel tree at the same time. Cc: "Rafael J. Wysocki" <rafael@kernel.org> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Link: https://lore.kernel.org/r/20230313181843.1207845-4-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-02-09mm: replace vma->vm_flags direct modifications with modifier callsSuren Baghdasaryan
Replace direct modifications to vma->vm_flags with calls to modifier functions to be able to track flag changes and to keep vma locking correctness. [akpm@linux-foundation.org: fix drivers/misc/open-dice.c, per Hyeonggon Yoo] Link: https://lkml.kernel.org/r/20230126193752.297968-5-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arjun Roy <arjunroy@google.com> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: David Hildenbrand <david@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: David Rientjes <rientjes@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Greg Thelen <gthelen@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jann Horn <jannh@google.com> Cc: Joel Fernandes <joelaf@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Laurent Dufour <ldufour@linux.ibm.com> Cc: Lorenzo Stoakes <lstoakes@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Minchan Kim <minchan@google.com> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Peter Oskolkov <posk@google.com> Cc: Peter Xu <peterx@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Punit Agrawal <punit.agrawal@bytedance.com> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Shakeel Butt <shakeelb@google.com> Cc: Soheil Hassas Yeganeh <soheil@google.com> Cc: Song Liu <songliubraving@fb.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-12-19Merge tag 'powerpc-6.2-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Add powerpc qspinlock implementation optimised for large system scalability and paravirt. See the merge message for more details - Enable objtool to be built on powerpc to generate mcount locations - Use a temporary mm for code patching with the Radix MMU, so the writable mapping is restricted to the patching CPU - Add an option to build the 64-bit big-endian kernel with the ELFv2 ABI - Sanitise user registers on interrupt entry on 64-bit Book3S - Many other small features and fixes Thanks to Aboorva Devarajan, Angel Iglesias, Benjamin Gray, Bjorn Helgaas, Bo Liu, Chen Lifu, Christoph Hellwig, Christophe JAILLET, Christophe Leroy, Christopher M. Riedl, Colin Ian King, Deming Wang, Disha Goel, Dmitry Torokhov, Finn Thain, Geert Uytterhoeven, Gustavo A. R. Silva, Haowen Bai, Joel Stanley, Jordan Niethe, Julia Lawall, Kajol Jain, Laurent Dufour, Li zeming, Miaoqian Lin, Michael Jeanson, Nathan Lynch, Naveen N. Rao, Nayna Jain, Nicholas Miehlbradt, Nicholas Piggin, Pali Rohár, Randy Dunlap, Rohan McLure, Russell Currey, Sathvika Vasireddy, Shaomin Deng, Stephen Kitt, Stephen Rothwell, Thomas Weißschuh, Tiezhu Yang, Uwe Kleine-König, Xie Shaowen, Xiu Jianfeng, XueBing Chen, Yang Yingliang, Zhang Jiaming, ruanjinjie, Jessica Yu, and Wolfram Sang. * tag 'powerpc-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (181 commits) powerpc/code-patching: Fix oops with DEBUG_VM enabled powerpc/qspinlock: Fix 32-bit build powerpc/prom: Fix 32-bit build powerpc/rtas: mandate RTAS syscall filtering powerpc/rtas: define pr_fmt and convert printk call sites powerpc/rtas: clean up includes powerpc/rtas: clean up rtas_error_log_max initialization powerpc/pseries/eeh: use correct API for error log size powerpc/rtas: avoid scheduling in rtas_os_term() powerpc/rtas: avoid device tree lookups in rtas_os_term() powerpc/rtasd: use correct OF API for event scan rate powerpc/rtas: document rtas_call() powerpc/pseries: unregister VPA when hot unplugging a CPU powerpc/pseries: reset the RCU watchdogs after a LPM powerpc: Take in account addition CPU node when building kexec FDT powerpc: export the CPU node count powerpc/cpuidle: Set CPUIDLE_FLAG_POLLING for snooze state powerpc/dts/fsl: Fix pca954x i2c-mux node names cxl: Remove unnecessary cxl_pci_window_alignment() selftests/powerpc: Fix resource leaks ...
2022-12-16Merge tag 'driver-core-6.2-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the set of driver core and kernfs changes for 6.2-rc1. The "big" change in here is the addition of a new macro, container_of_const() that will preserve the "const-ness" of a pointer passed into it. The "problem" of the current container_of() macro is that if you pass in a "const *", out of it can comes a non-const pointer unless you specifically ask for it. For many usages, we want to preserve the "const" attribute by using the same call. For a specific example, this series changes the kobj_to_dev() macro to use it, allowing it to be used no matter what the const value is. This prevents every subsystem from having to declare 2 different individual macros (i.e. kobj_const_to_dev() and kobj_to_dev()) and having the compiler enforce the const value at build time, which having 2 macros would not do either. The driver for all of this have been discussions with the Rust kernel developers as to how to properly mark driver core, and kobject, objects as being "non-mutable". The changes to the kobject and driver core in this pull request are the result of that, as there are lots of paths where kobjects and device pointers are not modified at all, so marking them as "const" allows the compiler to enforce this. So, a nice side affect of the Rust development effort has been already to clean up the driver core code to be more obvious about object rules. All of this has been bike-shedded in quite a lot of detail on lkml with different names and implementations resulting in the tiny version we have in here, much better than my original proposal. Lots of subsystem maintainers have acked the changes as well. Other than this change, included in here are smaller stuff like: - kernfs fixes and updates to handle lock contention better - vmlinux.lds.h fixes and updates - sysfs and debugfs documentation updates - device property updates All of these have been in the linux-next tree for quite a while with no problems" * tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (58 commits) device property: Fix documentation for fwnode_get_next_parent() firmware_loader: fix up to_fw_sysfs() to preserve const usb.h: take advantage of container_of_const() device.h: move kobj_to_dev() to use container_of_const() container_of: add container_of_const() that preserves const-ness of the pointer driver core: fix up missed drivers/s390/char/hmcdrv_dev.c class.devnode() conversion. driver core: fix up missed scsi/cxlflash class.devnode() conversion. driver core: fix up some missing class.devnode() conversions. driver core: make struct class.devnode() take a const * driver core: make struct class.dev_uevent() take a const * cacheinfo: Remove of_node_put() for fw_token device property: Add a blank line in Kconfig of tests device property: Rename goto label to be more precise device property: Move PROPERTY_ENTRY_BOOL() a bit down device property: Get rid of __PROPERTY_ENTRY_ARRAY_EL*SIZE*() kernfs: fix all kernel-doc warnings and multiple typos driver core: pass a const * into of_device_uevent() kobject: kset_uevent_ops: make name() callback take a const * kobject: kset_uevent_ops: make filter() callback take a const * kobject: make kobject_namespace take a const * ...
2022-12-06cxl: Remove unnecessary cxl_pci_window_alignment()Bjorn Helgaas
cxl_pci_window_alignment() is referenced only via the struct pci_controller_ops.window_alignment function pointer, and only in the powerpc implementation of pcibios_window_alignment(). pcibios_window_alignment() defaults to returning 1 if the function pointer is NULL, which is the same was what cxl_pci_window_alignment() does. cxl_pci_window_alignment() is unnecessary, so remove it. No functional change intended. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Frederic Barrat <fbarrat@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20221205223231.1268085-1-helgaas@kernel.org
2022-11-29driver core: fix up some missing class.devnode() conversions.Greg Kroah-Hartman
In commit ff62b8e6588f ("driver core: make struct class.devnode() take a const *") the ->devnode callback changed the pointer to be const, but a few instances of PowerPC drivers were not caught for some reason. Fix this up by changing the pointers to be const. Fixes: ff62b8e6588f ("driver core: make struct class.devnode() take a const *") Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Frederic Barrat <fbarrat@linux.ibm.com> Cc: Andrew Donnellan <ajd@linux.ibm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: linuxppc-dev@lists.ozlabs.org Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Link: https://lore.kernel.org/r/20221128173539.3112234-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-11-24cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter()Yang Yingliang
If device_register() fails in cxl_pci_afu|adapter(), the device is not added, device_unregister() can not be called in the error path, otherwise it will cause a null-ptr-deref because of removing not added device. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So split device_unregister() into device_del() and put_device(), then goes to put dev when register fails. Fixes: f204e0b8cedd ("cxl: Driver code for powernv PCIe based cards for userspace access") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Acked-by: Frederic Barrat <fbarrat@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20221111145440.2426970-2-yangyingliang@huawei.com
2022-11-24cxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter()Yang Yingliang
If device_register() fails in cxl_register_afu|adapter(), the device is not added, device_unregister() can not be called in the error path, otherwise it will cause a null-ptr-deref because of removing not added device. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So split device_unregister() into device_del() and put_device(), then goes to put dev when register fails. Fixes: 14baf4d9c739 ("cxl: Add guest-specific code") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Acked-by: Frederic Barrat <fbarrat@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20221111145440.2426970-1-yangyingliang@huawei.com
2022-11-24cxl: Fix refcount leak in cxl_calc_capp_routingMiaoqian Lin
of_get_next_parent() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. This function only calls of_node_put() in normal path, missing it in the error path. Add missing of_node_put() to avoid refcount leak. Fixes: f24be42aab37 ("cxl: Add psl9 specific code") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Acked-by: Frederic Barrat <fbarrat@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220605060038.62217-1-linmq006@gmail.com
2022-11-23cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter()Yang Yingliang
If device_register() fails in cxl_pci_afu|adapter(), the device is not added, device_unregister() can not be called in the error path, otherwise it will cause a null-ptr-deref because of removing not added device. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So split device_unregister() into device_del() and put_device(), then goes to put dev when register fails. Fixes: f204e0b8cedd ("cxl: Driver code for powernv PCIe based cards for userspace access") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Acked-by: Frederic Barrat <fbarrat@linux.ibm.com> Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Link: https://lore.kernel.org/r/20221111145440.2426970-2-yangyingliang@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-11-23cxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter()Yang Yingliang
If device_register() fails in cxl_register_afu|adapter(), the device is not added, device_unregister() can not be called in the error path, otherwise it will cause a null-ptr-deref because of removing not added device. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So split device_unregister() into device_del() and put_device(), then goes to put dev when register fails. Fixes: 14baf4d9c739 ("cxl: Add guest-specific code") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Acked-by: Frederic Barrat <fbarrat@linux.ibm.com> Link: https://lore.kernel.org/r/20221111145440.2426970-1-yangyingliang@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-26cxl: remove vma linked list walkMatthew Wilcox (Oracle)
Use the VMA iterator instead. This requires a little restructuring of the surrounding code to hoist the mm to the caller. That turns cxl_prefault_one() into a trivial function, so call cxl_fault_segment() directly. Link: https://lkml.kernel.org/r/20220906194824.2110408-38-Liam.Howlett@oracle.com Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Tested-by: Yu Zhao <yuzhao@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David Hildenbrand <david@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: SeongJae Park <sj@kernel.org> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-07-14cxl: Fix a memory leak in an error handling pathChristophe JAILLET
A bitmap_zalloc() must be balanced by a corresponding bitmap_free() in the error handling path of afu_allocate_irqs(). Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/ce5869418f5838187946eb6b11a52715a93ece3d.1657566849.git.christophe.jaillet@wanadoo.fr Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-14cxl: Use the bitmap API to allocate bitmapsChristophe JAILLET
Use bitmap_zalloc()/bitmap_free() instead of hand-writing them. It is less verbose and it improves the semantic. Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/59010cc7c62443030c69cb1ce0b2b62c5d47e064.1657566849.git.christophe.jaillet@wanadoo.fr Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-27cxl: drop unexpected word "the" in the commentsJiang Jian
there is an unexpected word "the" in the comments that need to be dropped file: drivers/misc/cxl/cxl.h line: 1107 +/* check if the given pci_dev is on the the cxl vphb bus */ changed to +/* check if the given pci_dev is on the cxl vphb bus */ Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Jiang Jian <jiangjian@cdjrlc.com> Link: https://lore.kernel.org/r/20220621125321.122280-1-jiangjian@cdjrlc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-11cxl/ocxl: Prepare cleanup of powerpc's asm/prom.hChristophe Leroy
powerpc's asm/prom.h brings some headers that it doesn't need itself. In order to clean it up, first add missing headers in users of asm/prom.h Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Acked-by: Frederic Barrat <fbarrat@linux.ibm.com> Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/a2bae89b280e7a7cb87889635d9911d6a245e780.1648833388.git.christophe.leroy@csgroup.eu
2022-01-14Merge tag 'char-misc-5.17-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc and other driver updates from Greg KH: "Here is the large set of char, misc, and other "small" driver subsystem changes for 5.17-rc1. Lots of different things are in here for char/misc drivers such as: - habanalabs driver updates - mei driver updates - lkdtm driver updates - vmw_vmci driver updates - android binder driver updates - other small char/misc driver updates Also smaller driver subsystems have also been updated, including: - fpga subsystem updates - iio subsystem updates - soundwire subsystem updates - extcon subsystem updates - gnss subsystem updates - phy subsystem updates - coresight subsystem updates - firmware subsystem updates - comedi subsystem updates - mhi subsystem updates - speakup subsystem updates - rapidio subsystem updates - spmi subsystem updates - virtual driver updates - counter subsystem updates Too many individual changes to summarize, the shortlog contains the full details. All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (406 commits) counter: 104-quad-8: Fix use-after-free by quad8_irq_handler dt-bindings: mux: Document mux-states property dt-bindings: ti-serdes-mux: Add defines for J721S2 SoC counter: remove old and now unused registration API counter: ti-eqep: Convert to new counter registration counter: stm32-lptimer-cnt: Convert to new counter registration counter: stm32-timer-cnt: Convert to new counter registration counter: microchip-tcb-capture: Convert to new counter registration counter: ftm-quaddec: Convert to new counter registration counter: intel-qep: Convert to new counter registration counter: interrupt-cnt: Convert to new counter registration counter: 104-quad-8: Convert to new counter registration counter: Update documentation for new counter registration functions counter: Provide alternative counter registration functions counter: stm32-timer-cnt: Convert to counter_priv() wrapper counter: stm32-lptimer-cnt: Convert to counter_priv() wrapper counter: ti-eqep: Convert to counter_priv() wrapper counter: ftm-quaddec: Convert to counter_priv() wrapper counter: intel-qep: Convert to counter_priv() wrapper counter: microchip-tcb-capture: Convert to counter_priv() wrapper ...
2021-12-29cxl: use default_groups in kobj_typeGreg Kroah-Hartman
There are currently 2 ways to create a set of sysfs files for a kobj_type, through the default_attrs field, and the default_groups field. Move the cxl code to use default_groups field which has been the preferred way since aa30f47cf666 ("kobject: Add support for default attribute groups to kobj_type") so that we can soon get rid of the obsolete default_attrs field. Cc: Frederic Barrat <fbarrat@linux.ibm.com> Cc: Andrew Donnellan <ajd@linux.ibm.com> Cc: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20211228131350.249532-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-09powerpc/64s: Make hash MMU support configurableNicholas Piggin
This adds Kconfig selection which allows 64s hash MMU support to be disabled. It can be disabled if radix support is enabled, the minimum supported CPU type is POWER9 (or higher), and KVM is not selected. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20211201144153.2456614-17-npiggin@gmail.com
2021-10-18cxl: Use to_pci_driver() instead of pci_dev->driverUwe Kleine-König
Struct pci_driver contains a struct device_driver, so for PCI devices, it's easy to convert a device_driver * to a pci_driver * with to_pci_driver(). The device_driver * is in struct device, so we don't need to also keep track of the pci_driver * in struct pci_dev. Replace pdev->driver with to_pci_driver(). This is a step toward removing pci_dev->driver. [bhelgaas: split to separate patch] Link: https://lore.kernel.org/r/20211004125935.2300113-11-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2021-10-18cxl: Factor out common dev->driver expressionsBjorn Helgaas
Save the struct pci_driver and struct pci_error_handlers pointers from pdev->driver instead of chasing the pointers several times. No functional change intended. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2021-05-14cxl: Fix an error messageChristophe JAILLET
'rc' is known to be 0 here. Initialize 'rc' with the expected error code before using it. While at it, avoid the affectation of 'rc' in a 'if' to make things more obvious and linux style. Fixes: f204e0b8cedd ("cxl: Driver code for powernv PCIe based cards for userspace access") Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/fa2b2c9c72335ab4c3d5e6a33415e7f020b1d51b.1620243401.git.christophe.jaillet@wanadoo.fr Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-24cxl: don't manipulate the mm.mm_users field directlyLaurent Dufour
It is better to rely on the API provided by the MM layer instead of directly manipulating the mm_users field. Acked-by: Frederic Barrat <fbarrat@linux.ibm.com> Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com> Link: https://lore.kernel.org/r/20210310174405.51044-1-ldufour@linux.ibm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-24cxl: Fix couple of spellingsBhaskar Chowdhury
s/filesytem/filesystem/ s/symantics/semantics/ Acked-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Link: https://lore.kernel.org/r/20210322023307.168754-1-unixbhaskar@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-02-24Merge tag 'char-misc-5.12-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the large set of char/misc/whatever driver subsystem updates for 5.12-rc1. Over time it seems like this tree is collecting more and more tiny driver subsystems in one place, making it easier for those maintainers, which is why this is getting larger. Included in here are: - coresight driver updates - habannalabs driver updates - virtual acrn driver addition (proper acks from the x86 maintainers) - broadcom misc driver addition - speakup driver updates - soundwire driver updates - fpga driver updates - amba driver updates - mei driver updates - vfio driver updates - greybus driver updates - nvmeem driver updates - phy driver updates - mhi driver updates - interconnect driver udpates - fsl-mc bus driver updates - random driver fix - some small misc driver updates (rtsx, pvpanic, etc.) All of these have been in linux-next for a while, with the only reported issue being a merge conflict due to the dfl_device_id addition from the fpga subsystem in here" * tag 'char-misc-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (311 commits) spmi: spmi-pmic-arb: Fix hw_irq overflow Documentation: coresight: Add PID tracing description coresight: etm-perf: Support PID tracing for kernel at EL2 coresight: etm-perf: Clarify comment on perf options ACRN: update MAINTAINERS: mailing list is subscribers-only regmap: sdw-mbq: use MODULE_LICENSE("GPL") regmap: sdw: use no_pm routines for SoundWire 1.2 MBQ regmap: sdw: use _no_pm functions in regmap_read/write soundwire: intel: fix possible crash when no device is detected MAINTAINERS: replace my with email with replacements mhi: Fix double dma free uapi: map_to_7segment: Update example in documentation uio: uio_pci_generic: don't fail probe if pdev->irq equals to IRQ_NOTCONNECTED drivers/misc/vmw_vmci: restrict too big queue size in qp_host_alloc_queue firewire: replace tricky statement by two simple ones vme: make remove callback return void firmware: google: make coreboot driver's remove callback return void firmware: xilinx: Use explicit values for all enum values sample/acrn: Introduce a sample of HSM ioctl interface usage virt: acrn: Introduce an interface for Service VM to control vCPU ...
2021-02-04cxl: Simplify bool conversionYang Li
Fix the following coccicheck warning: ./drivers/misc/cxl/sysfs.c:181:48-53: WARNING: conversion to bool not needed here Reported-by: Abaci Robot <abaci@linux.alibaba.com> Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com> Acked-by: Frederic Barrat <fbarrat@linux.ibm.com> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Link: https://lore.kernel.org/r/1611908705-98507-1-git-send-email-yang.lee@linux.alibaba.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-31cxl: Reduce scope for the variable “mm” in cxllib_get_PE_attributes()Markus Elfring
A local variable was used only within an if branch. Thus move the definition for the variable “mm” into the corresponding code block. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/5cee2b25-71e0-15aa-fba6-12211b8308aa@web.de
2020-08-25cxl: Rework error message for incompatible slotsFrederic Barrat
Improve the error message shown if a capi adapter is plugged on a capi-incompatible slot directly under the PHB (no intermediate switch). Fixes: 5632874311db ("cxl: Add support for POWER9 DD2") Cc: stable@vger.kernel.org # 4.14+ Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com> Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200407115601.25453-1-fbarrat@linux.ibm.com
2020-07-13cxl: Change PCIBIOS_SUCCESSFUL to 0Saheed O. Bolarinwa
In reference to the PCI spec (Chapter 2), PCIBIOS* is an x86 concept. There scope should be limited within arch/x86. Change all PCIBIOS_SUCCESSFUL to 0 Signed-off-by: "Saheed O. Bolarinwa" <refactormyself@gmail.com> Link: https://lore.kernel.org/r/20200713122247.10985-14-refactormyself@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-10misc: cxl: flash: Remove unused variable 'drc_index'Lee Jones
Keeping the pointer increment though. Fixes the following W=1 kernel build warning: drivers/misc/cxl/flash.c: In function ‘update_devicetree’: drivers/misc/cxl/flash.c:178:16: warning: variable ‘drc_index’ set but not used [-Wunused-but-set-variable] 178 | __be32 *data, drc_index, phandle; | ^~~~~~~~~ Cc: Frederic Barrat <fbarrat@linux.ibm.com> Cc: Andrew Donnellan <ajd@linux.ibm.com> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200709065651.GY3500@dell Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-01misc: cxl: hcalls: Demote half-assed kerneldoc attemptLee Jones
Function headers will need a lot of work before they reach the standards expected of kerneldoc. Demote them down to basic comments/headers, for now at least. Fixes the following W=1 kernel build warnings: drivers/misc/cxl/hcalls.c:175: warning: Function parameter or member 'unit_address' not described in 'cxl_h_detach_process' drivers/misc/cxl/hcalls.c:175: warning: Function parameter or member 'process_token' not described in 'cxl_h_detach_process' drivers/misc/cxl/hcalls.c:207: warning: Function parameter or member 'unit_address' not described in 'cxl_h_control_function' drivers/misc/cxl/hcalls.c:207: warning: Function parameter or member 'op' not described in 'cxl_h_control_function' drivers/misc/cxl/hcalls.c:207: warning: Function parameter or member 'p1' not described in 'cxl_h_control_function' drivers/misc/cxl/hcalls.c:207: warning: Function parameter or member 'p2' not described in 'cxl_h_control_function' drivers/misc/cxl/hcalls.c:207: warning: Function parameter or member 'p3' not described in 'cxl_h_control_function' drivers/misc/cxl/hcalls.c:207: warning: Function parameter or member 'p4' not described in 'cxl_h_control_function' drivers/misc/cxl/hcalls.c:207: warning: Function parameter or member 'out' not described in 'cxl_h_control_function' drivers/misc/cxl/hcalls.c:245: warning: Function parameter or member 'unit_address' not described in 'cxl_h_reset_afu' drivers/misc/cxl/hcalls.c:258: warning: Function parameter or member 'unit_address' not described in 'cxl_h_suspend_process' drivers/misc/cxl/hcalls.c:258: warning: Function parameter or member 'process_token' not described in 'cxl_h_suspend_process' drivers/misc/cxl/hcalls.c:271: warning: Function parameter or member 'unit_address' not described in 'cxl_h_resume_process' drivers/misc/cxl/hcalls.c:271: warning: Function parameter or member 'process_token' not described in 'cxl_h_resume_process' drivers/misc/cxl/hcalls.c:284: warning: Function parameter or member 'unit_address' not described in 'cxl_h_read_error_state' drivers/misc/cxl/hcalls.c:284: warning: Function parameter or member 'state' not described in 'cxl_h_read_error_state' drivers/misc/cxl/hcalls.c:300: warning: Function parameter or member 'unit_address' not described in 'cxl_h_get_afu_err' drivers/misc/cxl/hcalls.c:300: warning: Function parameter or member 'offset' not described in 'cxl_h_get_afu_err' drivers/misc/cxl/hcalls.c:300: warning: Function parameter or member 'buf_address' not described in 'cxl_h_get_afu_err' drivers/misc/cxl/hcalls.c:300: warning: Function parameter or member 'len' not described in 'cxl_h_get_afu_err' drivers/misc/cxl/hcalls.c:320: warning: Function parameter or member 'unit_address' not described in 'cxl_h_get_config' drivers/misc/cxl/hcalls.c:320: warning: Function parameter or member 'cr_num' not described in 'cxl_h_get_config' drivers/misc/cxl/hcalls.c:320: warning: Function parameter or member 'offset' not described in 'cxl_h_get_config' drivers/misc/cxl/hcalls.c:320: warning: Function parameter or member 'buf_address' not described in 'cxl_h_get_config' drivers/misc/cxl/hcalls.c:320: warning: Function parameter or member 'len' not described in 'cxl_h_get_config' drivers/misc/cxl/hcalls.c:333: warning: Function parameter or member 'unit_address' not described in 'cxl_h_terminate_process' drivers/misc/cxl/hcalls.c:333: warning: Function parameter or member 'process_token' not described in 'cxl_h_terminate_process' drivers/misc/cxl/hcalls.c:351: warning: Function parameter or member 'unit_address' not described in 'cxl_h_collect_vpd' drivers/misc/cxl/hcalls.c:351: warning: Function parameter or member 'record' not described in 'cxl_h_collect_vpd' drivers/misc/cxl/hcalls.c:351: warning: Function parameter or member 'list_address' not described in 'cxl_h_collect_vpd' drivers/misc/cxl/hcalls.c:351: warning: Function parameter or member 'num' not described in 'cxl_h_collect_vpd' drivers/misc/cxl/hcalls.c:351: warning: Function parameter or member 'out' not described in 'cxl_h_collect_vpd' drivers/misc/cxl/hcalls.c:362: warning: Function parameter or member 'unit_address' not described in 'cxl_h_get_fn_error_interrupt' drivers/misc/cxl/hcalls.c:362: warning: Function parameter or member 'reg' not described in 'cxl_h_get_fn_error_interrupt' drivers/misc/cxl/hcalls.c:374: warning: Function parameter or member 'unit_address' not described in 'cxl_h_ack_fn_error_interrupt' drivers/misc/cxl/hcalls.c:374: warning: Function parameter or member 'value' not described in 'cxl_h_ack_fn_error_interrupt' drivers/misc/cxl/hcalls.c:386: warning: Function parameter or member 'unit_address' not described in 'cxl_h_get_error_log' drivers/misc/cxl/hcalls.c:386: warning: Function parameter or member 'value' not described in 'cxl_h_get_error_log' drivers/misc/cxl/hcalls.c:399: warning: Function parameter or member 'unit_address' not described in 'cxl_h_collect_int_info' drivers/misc/cxl/hcalls.c:399: warning: Function parameter or member 'process_token' not described in 'cxl_h_collect_int_info' drivers/misc/cxl/hcalls.c:399: warning: Function parameter or member 'info' not described in 'cxl_h_collect_int_info' drivers/misc/cxl/hcalls.c:440: warning: Function parameter or member 'unit_address' not described in 'cxl_h_control_faults' drivers/misc/cxl/hcalls.c:440: warning: Function parameter or member 'process_token' not described in 'cxl_h_control_faults' drivers/misc/cxl/hcalls.c:440: warning: Function parameter or member 'control_mask' not described in 'cxl_h_control_faults' drivers/misc/cxl/hcalls.c:440: warning: Function parameter or member 'reset_mask' not described in 'cxl_h_control_faults' drivers/misc/cxl/hcalls.c:480: warning: Function parameter or member 'unit_address' not described in 'cxl_h_control_facility' drivers/misc/cxl/hcalls.c:480: warning: Function parameter or member 'op' not described in 'cxl_h_control_facility' drivers/misc/cxl/hcalls.c:480: warning: Function parameter or member 'p1' not described in 'cxl_h_control_facility' drivers/misc/cxl/hcalls.c:480: warning: Function parameter or member 'p2' not described in 'cxl_h_control_facility' drivers/misc/cxl/hcalls.c:480: warning: Function parameter or member 'p3' not described in 'cxl_h_control_facility' drivers/misc/cxl/hcalls.c:480: warning: Function parameter or member 'p4' not described in 'cxl_h_control_facility' drivers/misc/cxl/hcalls.c:480: warning: Function parameter or member 'out' not described in 'cxl_h_control_facility' drivers/misc/cxl/hcalls.c:516: warning: Function parameter or member 'unit_address' not described in 'cxl_h_reset_adapter' drivers/misc/cxl/hcalls.c:532: warning: Function parameter or member 'unit_address' not described in 'cxl_h_collect_vpd_adapter' drivers/misc/cxl/hcalls.c:532: warning: Function parameter or member 'list_address' not described in 'cxl_h_collect_vpd_adapter' drivers/misc/cxl/hcalls.c:532: warning: Function parameter or member 'num' not described in 'cxl_h_collect_vpd_adapter' drivers/misc/cxl/hcalls.c:532: warning: Function parameter or member 'out' not described in 'cxl_h_collect_vpd_adapter' drivers/misc/cxl/hcalls.c:561: warning: Function parameter or member 'unit_address' not described in 'cxl_h_download_facility' drivers/misc/cxl/hcalls.c:561: warning: Function parameter or member 'op' not described in 'cxl_h_download_facility' drivers/misc/cxl/hcalls.c:561: warning: Function parameter or member 'list_address' not described in 'cxl_h_download_facility' drivers/misc/cxl/hcalls.c:561: warning: Function parameter or member 'num' not described in 'cxl_h_download_facility' drivers/misc/cxl/hcalls.c:561: warning: Function parameter or member 'out' not described in 'cxl_h_download_facility' drivers/misc/cxl/hcalls.c:626: warning: Function parameter or member 'unit_address' not described in 'cxl_h_download_adapter_image' drivers/misc/cxl/hcalls.c:626: warning: Function parameter or member 'list_address' not described in 'cxl_h_download_adapter_image' drivers/misc/cxl/hcalls.c:626: warning: Function parameter or member 'num' not described in 'cxl_h_download_adapter_image' drivers/misc/cxl/hcalls.c:626: warning: Function parameter or member 'out' not described in 'cxl_h_download_adapter_image' drivers/misc/cxl/hcalls.c:639: warning: Function parameter or member 'unit_address' not described in 'cxl_h_validate_adapter_image' drivers/misc/cxl/hcalls.c:639: warning: Function parameter or member 'list_address' not described in 'cxl_h_validate_adapter_image' drivers/misc/cxl/hcalls.c:639: warning: Function parameter or member 'num' not described in 'cxl_h_validate_adapter_image' Cc: Frederic Barrat <fbarrat@linux.ibm.com> Cc: Andrew Donnellan <ajd@linux.ibm.com> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20200701083118.45744-28-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-06-29cxl: Fix kobject memleakWang Hai
Currently the error return path from kobject_init_and_add() is not followed by a call to kobject_put() - which means we are leaking the kobject. Fix it by adding a call to kobject_put() in the error path of kobject_init_and_add(). Fixes: b087e6190ddc ("cxl: Export optional AFU configuration record in sysfs") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wang Hai <wanghai38@huawei.com> Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Acked-by: Frederic Barrat <fbarrat@linux.ibm.com> Link: https://lore.kernel.org/r/20200602120733.5943-1-wanghai38@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-06-09mmap locking API: convert mmap_sem commentsMichel Lespinasse
Convert comments that reference mmap_sem to reference mmap_lock instead. [akpm@linux-foundation.org: fix up linux-next leftovers] [akpm@linux-foundation.org: s/lockaphore/lock/, per Vlastimil] [akpm@linux-foundation.org: more linux-next fixups, per Michel] Signed-off-by: Michel Lespinasse <walken@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jerome Glisse <jglisse@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Laurent Dufour <ldufour@linux.ibm.com> Cc: Liam Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ying Han <yinghan@google.com> Link: http://lkml.kernel.org/r/20200520052908.204642-13-walken@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-09mmap locking API: use coccinelle to convert mmap_sem rwsem call sitesMichel Lespinasse
This change converts the existing mmap_sem rwsem calls to use the new mmap locking API instead. The change is generated using coccinelle with the following rule: // spatch --sp-file mmap_lock_api.cocci --in-place --include-headers --dir . @@ expression mm; @@ ( -init_rwsem +mmap_init_lock | -down_write +mmap_write_lock | -down_write_killable +mmap_write_lock_killable | -down_write_trylock +mmap_write_trylock | -up_write +mmap_write_unlock | -downgrade_write +mmap_write_downgrade | -down_read +mmap_read_lock | -down_read_killable +mmap_read_lock_killable | -down_read_trylock +mmap_read_trylock | -up_read +mmap_read_unlock ) -(&mm->mmap_sem) +(mm) Signed-off-by: Michel Lespinasse <walken@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jerome Glisse <jglisse@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Liam Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ying Han <yinghan@google.com> Link: http://lkml.kernel.org/r/20200520052908.204642-5-walken@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02cxl: Remove dead Kconfig optionsAndrew Donnellan
The CXL_AFU_DRIVER_OPS and CXL_LIB Kconfig options were added to coordinate merging of new features. They no longer serve any purpose, so remove them. Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200602040341.10152-1-ajd@linux.ibm.com
2020-01-14misc: cxl: use mmgrabJulia Lawall
Mmgrab was introduced in commit f1f1007644ff ("mm: add new mmgrab() helper") and most of the kernel was updated to use it. Update a remaining file. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) <smpl> @@ expression e; @@ - atomic_inc(&e->mm_count); + mmgrab(e); </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Link: https://lore.kernel.org/r/1577634178-22530-2-git-send-email-Julia.Lawall@inria.fr Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-10-23compat_ioctl: use correct compat_ptr() translation in driversArnd Bergmann
A handful of drivers all have a trivial wrapper around their ioctl handler, but don't call the compat_ptr() conversion function at the moment. In practice this does not matter, since none of them are used on the s390 architecture and for all other architectures, compat_ptr() does not do anything, but using the new compat_ptr_ioctl() helper makes it more correct in theory, and simplifies the code. I checked that all ioctl handlers in these files are compatible and take either pointer arguments or no argument. Acked-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-09-05powerpc/64s/radix: introduce options to disable use of the tlbie instructionNicholas Piggin
Introduce two options to control the use of the tlbie instruction. A boot time option which completely disables the kernel using the instruction, this is currently incompatible with HASH MMU, KVM, and coherent accelerators. And a debugfs option can be switched at runtime and avoids using tlbie for invalidating CPU TLBs for normal process and kernel address mappings. Coherent accelerators are still managed with tlbie, as will KVM partition scope translations. Cross-CPU TLB flushing is implemented with IPIs and tlbiel. This is a basic implementation which does not attempt to make any optimisation beyond the tlbie implementation. This is useful for performance testing among other things. For example in certain situations on large systems, using IPIs may be faster than tlbie as they can be directed rather than broadcast. Later we may also take advantage of the IPIs to do more interesting things such as trim the mm cpumask more aggressively. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190902152931.17840-7-npiggin@gmail.com
2019-07-19Merge branch 'work.mount0' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs mount updates from Al Viro: "The first part of mount updates. Convert filesystems to use the new mount API" * 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (63 commits) mnt_init(): call shmem_init() unconditionally constify ksys_mount() string arguments don't bother with registering rootfs init_rootfs(): don't bother with init_ramfs_fs() vfs: Convert smackfs to use the new mount API vfs: Convert selinuxfs to use the new mount API vfs: Convert securityfs to use the new mount API vfs: Convert apparmorfs to use the new mount API vfs: Convert openpromfs to use the new mount API vfs: Convert xenfs to use the new mount API vfs: Convert gadgetfs to use the new mount API vfs: Convert oprofilefs to use the new mount API vfs: Convert ibmasmfs to use the new mount API vfs: Convert qib_fs/ipathfs to use the new mount API vfs: Convert efivarfs to use the new mount API vfs: Convert configfs to use the new mount API vfs: Convert binfmt_misc to use the new mount API convenience helper: get_tree_single() convenience helper get_tree_nodev() vfs: Kill sget_userns() ...
2019-07-12Merge tag 'driver-core-5.3-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core and debugfs updates from Greg KH: "Here is the "big" driver core and debugfs changes for 5.3-rc1 It's a lot of different patches, all across the tree due to some api changes and lots of debugfs cleanups. Other than the debugfs cleanups, in this set of changes we have: - bus iteration function cleanups - scripts/get_abi.pl tool to display and parse Documentation/ABI entries in a simple way - cleanups to Documenatation/ABI/ entries to make them parse easier due to typos and other minor things - default_attrs use for some ktype users - driver model documentation file conversions to .rst - compressed firmware file loading - deferred probe fixes All of these have been in linux-next for a while, with a bunch of merge issues that Stephen has been patient with me for" * tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (102 commits) debugfs: make error message a bit more verbose orangefs: fix build warning from debugfs cleanup patch ubifs: fix build warning after debugfs cleanup patch driver: core: Allow subsystems to continue deferring probe drivers: base: cacheinfo: Ensure cpu hotplug work is done before Intel RDT arch_topology: Remove error messages on out-of-memory conditions lib: notifier-error-inject: no need to check return value of debugfs_create functions swiotlb: no need to check return value of debugfs_create functions ceph: no need to check return value of debugfs_create functions sunrpc: no need to check return value of debugfs_create functions ubifs: no need to check return value of debugfs_create functions orangefs: no need to check return value of debugfs_create functions nfsd: no need to check return value of debugfs_create functions lib: 842: no need to check return value of debugfs_create functions debugfs: provide pr_fmt() macro debugfs: log errors when something goes wrong drivers: s390/cio: Fix compilation warning about const qualifiers drivers: Add generic helper to match by of_node driver_find_device: Unify the match function with class_find_device() bus_find_device: Unify the match callback with class_find_device ...
2019-06-18cxl: no need to check return value of debugfs_create functionsGreg Kroah-Hartman
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Because there's no need to check, also make the return value of the local debugfs_create_io_x64() call void, as no one ever did anything with the return value (as they did not need to.) And make the cxl_debugfs_* calls return void as no one was even checking their return value at all. Cc: linuxppc-dev@lists.ozlabs.org Acked-by: Andrew Donnellan <ajd@linux.ibm.com> Reviewed-by: Frederic Barrat <fbarrat@linux.ibm.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-09Merge 5.2-rc4 into char-misc-nextGreg Kroah-Hartman
We want the char/misc driver fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152Thomas Gleixner
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-25vfs: Convert cxl to use the new mount APIDavid Howells
Convert the cxl filesystem to the new internal mount API as the old one will be obsoleted and removed. This allows greater flexibility in communication of mount parameters between userspace, the VFS and the filesystem. See Documentation/filesystems/mount_api.txt for more information. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Acked-by: Frederic Barrat <fbarrat@linux.ibm.com> cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
generated by cgit (git 2.34.1) at 2024-05-30 17:52:15 +0000