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2014-12-09Merge tag 'at91-cleanup-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC cleanup on mach-at91 from Arnd Bergmann: "On Atmel AT91, the conversion to device tree is now considered complete, and all machines that were not already converted in 3.18 are assumed to be unused and dropped by the maintainer. All remaining board files that were written in C are dropped, and the ancient at91x40 sub-platform (based on an MMU-less ARM7) is removed altogether. Cleaning up the last pieces was great fun, so I took the time to do some of the coding myself and removed several hundred code lines that ended up unused after the board files were done. There are still a couple of AT91 specific device drivers that are not converted to DT (CF, USB-OTG) and currently not working, and the platform itself is not "multiplatform"-enabled, but both issues are going to be taken care of in the 3.20 cycle. This is split out from the other cleanups purely based on the size of the branch" * tag 'at91-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (33 commits) ARM: at91: remove unused board.h file ARM: at91: remove unneeded header files ARM: at91/clocksource: remove !DT PIT initializations ARM: at91: at91rm9200 ST initialization is now DT only ARM: at91: remove old AT91-specific drivers ARM: at91: cleanup initilisation code by removing dead code ARM: at91/Kconfig: select board files automatically ARM: at91: remove unused IRQ function declarations ARM: at91: remove legacy IRQ driver and related code ARM: at91: remove old at91-specific clock driver ARM: at91: remove clock data in at91sam9n12.c and at91sam9x5.c files ARM: at91: remove all !DT related configuration options ARM: at91/trivial: update Kconfig comment to mention SAMA5 ARM: at91: always USE_OF from now on ARM: at91/Kconfig: remove ARCH_AT91RM9200 option for drivers ARM: at91: switch configuration option to SOC_AT91RM9200 ARM: at91: remove at91rm9200 legacy board support ARM: at91: remove at91rm9200 legacy boards files ARM: at91/Kconfig: remove useless fbdev Kconfig options ARM: at91: remove at91sam9261/at91sam9g10 legacy board support ...
2014-12-09vmci: propagate msghdr all way down to __qp_memcpy_from_queue()Al Viro
... and switch it to memcpy_to_msg() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-12-09virtio: allow finalize_features to failMichael S. Tsirkin
This will make it easy for transports to validate features and return failure. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-09virtio: assert 32 bit features in transportsMichael S. Tsirkin
At this point, no transports set any of the high 32 feature bits. Since transports generally can't (yet) cope with such bits, add BUG_ON checks to make sure they are not set by mistake. Based on rproc patch by Rusty. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-12-09virtio: add support for 64 bit features.Michael S. Tsirkin
Change u32 to u64, and use BIT_ULL and 1ULL everywhere. Note: transports are unchanged, and only set low 32 bit. This guarantees that no transport sets e.g. VERSION_1 by mistake without proper support. Based on patch by Rusty. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-12-09mic_virtio: robust feature array size calculationMichael S. Tsirkin
mic reads sizeof(vdev->features) bits from device, but in fact it stores bits in local features variable. use sizeof(features) to make code robust against future changes extending sizeof(vdev->features). Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-09virtio: use u32, not bitmap for featuresMichael S. Tsirkin
It seemed like a good idea to use bitmap for features in struct virtio_device, but it's actually a pain, and seems to become even more painful when we get more than 32 feature bits. Just change it to a u32 for now. Based on patch by Rusty. Suggested-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-12-08Merge branch 'iov_iter' into for-nextAl Viro
2014-12-08Merge branch 'pm-runtime'Rafael J. Wysocki
* pm-runtime: (25 commits) i2c-omap / PM: Drop CONFIG_PM_RUNTIME from i2c-omap.c dmaengine / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM drivers: sh / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM e1000e / igb / PM: Eliminate CONFIG_PM_RUNTIME MMC / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM MFD / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM misc / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM media / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM input / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM iio / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM hsi / OMAP / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM i2c-hid / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM drm / exynos / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM gpio / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM hwrandom / exynos / PM: Use CONFIG_PM in #ifdef block / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM USB / PM: Drop CONFIG_PM_RUNTIME from the USB core PM: Merge the SET*_RUNTIME_PM_OPS() macros PM / Kconfig: Do not select PM directly from Kconfig files PCI / PM: Drop CONFIG_PM_RUNTIME from the PCI core ...
2014-12-05powerpc/mm: don't do tlbie for updatepp request with NO HPTE faultAneesh Kumar K.V
upatepp can get called for a nohpte fault when we find from the linux page table that the translation was hashed before. In that case we are sure that there is no existing translation, hence we could avoid doing tlbie. We could possibly race with a parallel fault filling the TLB. But that should be ok because updatepp is only ever relaxing permissions. We also look at linux pte permission bits when filling hash pte permission bits. We also hold the linux pte busy bits while inserting/updating a hashpte entry, hence a paralle update of linux pte is not possible. On the other hand mprotect involves ptep_modify_prot_start which cause a hpte invalidate and not updatepp. Performance number: We use randbox_access_bench written by Anton. Kernel with THP disabled and smaller hash page table size. 86.60% random_access_b [kernel.kallsyms] [k] .native_hpte_updatepp 2.10% random_access_b random_access_bench [.] doit 1.99% random_access_b [kernel.kallsyms] [k] .do_raw_spin_lock 1.85% random_access_b [kernel.kallsyms] [k] .native_hpte_insert 1.26% random_access_b [kernel.kallsyms] [k] .native_flush_hash_range 1.18% random_access_b [kernel.kallsyms] [k] .__delay 0.69% random_access_b [kernel.kallsyms] [k] .native_hpte_remove 0.37% random_access_b [kernel.kallsyms] [k] .clear_user_page 0.34% random_access_b [kernel.kallsyms] [k] .__hash_page_64K 0.32% random_access_b [kernel.kallsyms] [k] fast_exception_return 0.30% random_access_b [kernel.kallsyms] [k] .hash_page_mm With Fix: 27.54% random_access_b random_access_bench [.] doit 22.90% random_access_b [kernel.kallsyms] [k] .native_hpte_insert 5.76% random_access_b [kernel.kallsyms] [k] .native_hpte_remove 5.20% random_access_b [kernel.kallsyms] [k] fast_exception_return 5.12% random_access_b [kernel.kallsyms] [k] .__hash_page_64K 4.80% random_access_b [kernel.kallsyms] [k] .hash_page_mm 3.31% random_access_b [kernel.kallsyms] [k] data_access_common 1.84% random_access_b [kernel.kallsyms] [k] .trace_hardirqs_on_caller Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-12-05misc / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PMRafael J. Wysocki
After commit b2b49ccbdd54 (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is selected) PM_RUNTIME is always set if PM is set, so #ifdef blocks depending on CONFIG_PM_RUNTIME may now be changed to depend on CONFIG_PM. Replace CONFIG_PM_RUNTIME with CONFIG_PM everywhere under drivers/misc/. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-28Merge tag 'at91-cleanup3' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into next/cleanup Pull "Third batch of cleanup/SoC for 3.19" from Nicolas Ferre: - fixes following legacy board removal - removal of legacy board support for at91sam9263, at91sam9260/at91sam9g20 and at91sam9261/at91sam9g10 SoCs families. Please use DT now. - removal of some now useless Kconfig options * tag 'at91-cleanup3' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91: ARM: at91/Kconfig: remove useless fbdev Kconfig options ARM: at91: remove at91sam9261/at91sam9g10 legacy board support ARM: at91/Kconfig: remove unused config options ARM: at91: remove at91sam9260/at91sam9g20 legacy board support ARM: at91: remove at91sam9260/at91sam9g20 legacy boards files ARM: at91: remove at91sam9263 legacy board support ARM: at91/at91sam9g45: remove useless header file Conflicts: arch/arm/mach-at91/at91sam9g45.c Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-11-28ARM: vexpress: Remove non-DT codePawel Moll
Now, with the CLCD DT support available, there is no more reason to keep the non-DT support for V2P-CA9. Removed, together with "some" supporting code. It was necessary to make PLAT_VERSATILE_SCHED_CLOCK optional and selected by the machines still interested in it. Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Pawel Moll <pawel.moll@arm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-11-26carma-fpga-program: drop videobuf dependencyHans Verkuil
This driver abuses videobuf helper functions. This is a bad idea because: 1) this driver is completely unrelated to media drivers 2) the videobuf API is deprecated and will be removed eventually This patch replaces the videobuf functions with the normal DMA kernel API. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26carma-fpga: drop videobuf dependencyHans Verkuil
This driver abuses videobuf helper functions. This is a bad idea because: 1) this driver is completely unrelated to media drivers 2) the videobuf API is deprecated and will be removed eventually This patch replaces the videobuf functions with the normal DMA kernel API. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26carma-fpga-program.c: fix compile errorsHans Verkuil
drivers/misc/carma/carma-fpga-program.c: In function 'fpga_program_dma': drivers/misc/carma/carma-fpga-program.c:529:2: error: expected ';' before 'if' if (ret) { ^ drivers/misc/carma/carma-fpga-program.c: In function 'fpga_read': drivers/misc/carma/carma-fpga-program.c:752:45: error: 'ppos' undeclared (first use in this function) return simple_read_from_buffer(buf, count, ppos, ^ drivers/misc/carma/carma-fpga-program.c:752:45: note: each undeclared identifier is reported only once for each function it appears in drivers/misc/carma/carma-fpga-program.c: In function 'fpga_llseek': drivers/misc/carma/carma-fpga-program.c:765:27: error: 'file' undeclared (first use in this function) return fixed_size_llseek(file, offset, origin, priv->fw_size); ^ drivers/misc/carma/carma-fpga-program.c:759:9: warning: unused variable 'newpos' [-Wunused-variable] loff_t newpos; ^ drivers/misc/carma/carma-fpga-program.c: In function 'fpga_read': drivers/misc/carma/carma-fpga-program.c:754:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ drivers/misc/carma/carma-fpga-program.c: In function 'fpga_llseek': drivers/misc/carma/carma-fpga-program.c:766:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ scripts/Makefile.build:263: recipe for target 'drivers/misc/carma/carma-fpga-program.o' failed Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26cxl: Name interrupts in /proc/interruptMichael Neuling
Currently all interrupts generated by cxl are named "cxl". This is not very informative as we can't distinguish between cards, AFUs, error interrupts, user contexts and user interrupts numbers. Being able to distinguish them is useful for setting affinity. This patch gives each of these names in /proc/interrupts. A two card CAPI system, with afu0.0 having 2 active contexts each with 4 user IRQs each, will now look like this: % grep cxl /proc/interrupts 444: 0 OPAL ICS 141312 Level cxl-card1-err 445: 0 OPAL ICS 141313 Level cxl-afu1.0-err 446: 0 OPAL ICS 141314 Level cxl-afu1.0 462: 0 OPAL ICS 2052 Level cxl-afu0.0-pe0-1 463: 75517 OPAL ICS 2053 Level cxl-afu0.0-pe0-2 468: 0 OPAL ICS 2054 Level cxl-afu0.0-pe0-3 469: 0 OPAL ICS 2055 Level cxl-afu0.0-pe0-4 470: 0 OPAL ICS 2056 Level cxl-afu0.0-pe1-1 471: 75506 OPAL ICS 2057 Level cxl-afu0.0-pe1-2 472: 0 OPAL ICS 2058 Level cxl-afu0.0-pe1-3 473: 0 OPAL ICS 2059 Level cxl-afu0.0-pe1-4 502: 1066 OPAL ICS 2050 Level cxl-afu0.0 514: 0 OPAL ICS 2048 Level cxl-card0-err 515: 0 OPAL ICS 2049 Level cxl-afu0.0-err Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26CXL: Return error to PSL if IRQ demultiplexing fails & print clearer warningIan Munsie
If an AFU has a hardware bug that causes it to acknowledge a context terminate or remove while that context has outstanding transactions, it is possible for the kernel to receive an interrupt for that context after we have removed it from the context list. The kernel will not be able to demultiplex the interrupt (or worse - if we have already reallocated the process handle we could mis-attribute it to the new context), and printed a big scary warning. It did not acknowledge the interrupt, which would effectively halt further translation fault processing on the PSL. This patch makes the warning clearer about the likely cause of the issue (i.e. hardware bug) to make it obvious to future AFU designers of what needs to be fixed. It also prints out the process handle which can then be matched up with hardware and software traces for debugging. It also acknowledges the interrupt to the PSL with either an address error or acknowledge, so that the PSL can continue with other translations. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26mei: export fw status registers through sysfsTomas Winkler
The interface is for applications that monitor the fw health. We use device_create_with_groups interface to register attribute with the mei class device Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26mei: read and print all six FW status registersAlexander Usyskin
ME devices prior to PCH8 (Lynx Point) have two FW status registers, on PCH8 and newer excluding txe there are six FW status registers. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26mei: txe: add cherrytrail device idTomas Winkler
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26mei: kill cached host and me csr valuesTomas Winkler
Kill host_hw_status and me_hw_state from me hw structure that used to cache host and me csr values. We do not use the cached values across the function calls anymore Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26misc: Remove unused subdirectoryThierry Reding
Commit 783c8f4c8445 ("soc/tegra: Add efuse driver for Tegra") added a fuse directory in drivers/misc along with a Makefile that were never used. They were leftovers from an earlier version of the patch series. Reported-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-25eeprom-93cx6: Add (read-only) support for 8-bit modeOndrej Zary
Add read-only support for EEPROMs configured in 8-bit mode (ORG pin connected to GND). This will be used by wd719x driver. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-19assorted conversions to %p[dD]Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-11-19ARM: at91/Kconfig: remove unused config optionsNicolas Ferre
When removing old board !DT support, several Kconfig options were deleted. Propagate this removal to drivers Kconfig files. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-11-18cxl: Name interrupts in /proc/interruptMichael Neuling
Currently all interrupts generated by cxl are named "cxl". This is not very informative as we can't distinguish between cards, AFUs, error interrupts, user contexts and user interrupts numbers. Being able to distinguish them is useful for setting affinity. This patch gives each of these names in /proc/interrupts. A two card CAPI system, with afu0.0 having 2 active contexts each with 4 user IRQs each, will now look like this: % grep cxl /proc/interrupts 444: 0 OPAL ICS 141312 Level cxl-card1-err 445: 0 OPAL ICS 141313 Level cxl-afu1.0-err 446: 0 OPAL ICS 141314 Level cxl-afu1.0 462: 0 OPAL ICS 2052 Level cxl-afu0.0-pe0-1 463: 75517 OPAL ICS 2053 Level cxl-afu0.0-pe0-2 468: 0 OPAL ICS 2054 Level cxl-afu0.0-pe0-3 469: 0 OPAL ICS 2055 Level cxl-afu0.0-pe0-4 470: 0 OPAL ICS 2056 Level cxl-afu0.0-pe1-1 471: 75506 OPAL ICS 2057 Level cxl-afu0.0-pe1-2 472: 0 OPAL ICS 2058 Level cxl-afu0.0-pe1-3 473: 0 OPAL ICS 2059 Level cxl-afu0.0-pe1-4 502: 1066 OPAL ICS 2050 Level cxl-afu0.0 514: 0 OPAL ICS 2048 Level cxl-card0-err 515: 0 OPAL ICS 2049 Level cxl-afu0.0-err Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-18cxl: Return error to PSL if IRQ demultiplexing fails & print clearer warningIan Munsie
If an AFU has a hardware bug that causes it to acknowledge a context terminate or remove while that context has outstanding transactions, it is possible for the kernel to receive an interrupt for that context after we have removed it from the context list. The kernel will not be able to demultiplex the interrupt (or worse - if we have already reallocated the process handle we could mis-attribute it to the new context), and printed a big scary warning. It did not acknowledge the interrupt, which would effectively halt further translation fault processing on the PSL. This patch makes the warning clearer about the likely cause of the issue (i.e. hardware bug) to make it obvious to future AFU designers of what needs to be fixed. It also prints out the process handle which can then be matched up with hardware and software traces for debugging. It also acknowledges the interrupt to the PSL with either an address error or acknowledge, so that the PSL can continue with other translations. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-17eeprom: at24: extend driver to allow writing via i2c_smbus_write_byte_dataChristian Gmeiner
I have a at24 EEPROM connected via i2c bus provided by ISCH i2c bus driver. This bus driver does not support I2C_FUNC_SMBUS_WRITE_I2C_BLOCK and so I was looking for a way to be able to write the eeprom. This patch adds support for I2C_SMBUS_BYTE_DATA writing via i2c_smbus_write_byte_data. It is quite slow, but it works. Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com> [wsa: s/use_smbuse_write/use_smbus_write/] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-11-12enclosure: handle non-unique element descriptorsMarkus Stockhausen
Some SES devices give non-unique Element Descriptors as part of the Element Descriptor diag page. Since we use these for creating sysfs entries, they need to be unique. The specification doesn't require these to be unique. Eg: $ sg_ses -p 7 /dev/sg0 FTS CORP TXS6_SAS20BPX12 0500 enclosure services device Element descriptor In diagnostic page: generation code: 0x0 element descriptor by type list Element type: Array device, subenclosure id: 0 Overall descriptor: ArrayDevicesInSubEnclsr0 Element 1 descriptor: ArrayDevice00 Element 2 descriptor: ArrayDevice01 Element 3 descriptor: ArrayDevice02 Element 4 descriptor: ArrayDevice03 Element 5 descriptor: ArrayDevice03 Element 6 descriptor: ArrayDevice03 Element 7 descriptor: ArrayDevice03 Element 8 descriptor: ArrayDevice03 Element 9 descriptor: ArrayDevice03 Element 10 descriptor: ArrayDevice03 Element 11 descriptor: ArrayDevice03 Element 12 descriptor: ArrayDevice03 Based on http://thread.gmane.org/gmane.linux.scsi/69289. This version implements James' ideas about the naming convention Signed-off-by: Markus Stockhausen <stockhausen@collogia.de> Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-07pch_phub: Build context save/restore only for PMThierry Reding
The pch_phub_save_reg_conf() and pch_phub_restore_reg_conf() functions are only used for suspend/resume support (i.e. when PM is enabled). If PM is disabled they don't need to be built. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-07misc: genwqe: check for error from get_user_pages_fast()Ian Abbott
`genwqe_user_vmap()` calls `get_user_pages_fast()` and if the return value is less than the number of pages requested, it frees the pages and returns an error (`-EFAULT`). However, it fails to consider a negative error return value from `get_user_pages_fast()`. In that case, the test `if (rc < m->nr_pages)` will be false (due to promotion of `rc` to a large `unsigned int`) and the code will continue on to call `genwqe_map_pages()` with an invalid list of page pointers. Fix it by bailing out if `get_user_pages_fast()` returns a negative error value. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Cc: <stable@vger.kernel.org> # 3.14.x # 3.15.x # 3.16.x # 3.17.x Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-07mei: fix hbm MEI_HBM_STARTED ambiguityTomas Winkler
We have MEI_HBM_STARTED in two contexts one after start message was received and second after enumeration was completed. Because after start message reception we move immediately to the enumeration state, we need only the later meaning. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-07mei: nfc: clean nfc internal struct on host exitTomas Winkler
NFC internal structure cleaning was dropped by commit commit 487056932d372cc4f6c636f21a928d6667b151d7 Author: Tomas Winkler <tomas.winkler@intel.com> Date: Mon Feb 17 15:13:19 2014 +0200 mei: Remove all bus devices from the mei_dev list when stopping the MEI When stopping the MEI, we should remove and potentially unregister all bus devices queued on the mei_dev linked list. We allocate nfc_dev and free it across the reset so we do not keep it in dirty state Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-07misc: atmel-ssc: prepare clock only when requestBo Shen
Prepare SSC clock only when request SSC channel, the clock will be enabled when initialize the SSC. Signed-off-by: Bo Shen <voice.shen@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-04misc: at25: Make use of device property APIMika Westerberg
Make use of device property API in this driver so that both DT and ACPI based systems can use this driver. In addition we hard-code the name of the chip to be "at25" for the reason that there is no common mechanism to fetch name of the firmware node. The only existing user (arch/arm/boot/dts/phy3250.dts) uses the same name so it should continue to work. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-11-03Merge branch 'platform/remove_owner' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into driver-core-next Remove all .owner fields from platform drivers
2014-11-03mei: hbm: use client specific print functionsAlexander Usyskin
We have host client in connect/disconnect response processors, so use client print functions to simplify and unify code. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-03mei: debugfs: display also connectionless clientsTomas Winkler
<debugfs>meiX/meclients: display also fixed/connectionless clients Use better name for fixed client field: fixed_address is boolean and indicates whether a client is fixed or dynamic. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-03mei: use local cl variables in wd and amthifTomas Winkler
Use local cl variable instead of dev->iamthif_cl and dev->wd_cl as the first step to use dynamic allocation of these clients as their are not supported on all platforms Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-03mei: drop unneeded client NULL check in cb structureAlexander Usyskin
The pointer to client in the callback structure (cb->cl) can't be NULL with current locking. We can drop check and warnings as in some cases this just uselessly complicates the code flow. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-28cxl: Fix PSL error due to duplicate segment table entriesIan Munsie
In certain circumstances the PSL (Power Service Layer, which provides translation services for CXL hardware) can send an interrupt for a segment miss that the kernel has already handled. This can happen if multiple translations for the same segment are queued in the PSL before the kernel has restarted the first translation. The CXL driver does not expect this situation and does not check if a segment had already been handled. This could cause a duplicate segment table entry which in turn caused a PSL error taking down the card. This patch fixes the issue by checking for existing entries in the segment table that match the segment we are trying to insert, so as to avoid inserting duplicate entries. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-28cxl: Refactor cxl_load_segment() and find_free_sste()Ian Munsie
This moves the segment table hash calculation from cxl_load_segment() into find_free_sste() since that is the only place it is actually used. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-28cxl: Disable secondary hash in segment tableIan Munsie
This patch simplifies the process of finding a free segment table entry by disabling the secondary hash. This reduces the number of possible entries in the segment table for a given address from 16 to 8. Due to the large segment sizes we use it is extremely unlikely that the secondary hash would ever have been used in practice, so this should not have any negative impacts and may even improve performance due to the reduced number of comparisons that software & hardware need to perform. This patch clears the SC bit in the hardware's state register (CXL_PSL_SR_An) to disable the secondary hash in the hardware since we can no longer fill out entries using it. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-20misc: ti-st: drop owner assignment from platform_driversWolfram Sang
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20misc: mic: card: drop owner assignment from platform_driversWolfram Sang
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20misc: eeprom: drop owner assignment from platform_driversWolfram Sang
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20misc: carma: drop owner assignment from platform_driversWolfram Sang
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20misc: drop owner assignment from platform_driversWolfram Sang
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-18Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
Pull slave-dmaengine updates from Vinod Koul: "For dmaengine contributions we have: - designware cleanup by Andy - my series moving device_control users to dmanegine_xxx APIs for later removal of device_control API - minor fixes spread over drivers mainly mv_xor, pl330, mmp, imx-sdma etc" * 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (60 commits) serial: atmel: add missing dmaengine header dmaengine: remove FSLDMA_EXTERNAL_START dmaengine: freescale: remove FSLDMA_EXTERNAL_START control method carma-fpga: move to fsl_dma_external_start() carma-fpga: use dmaengine_xxx() API dmaengine: freescale: add and export fsl_dma_external_start() dmaengine: add dmaengine_prep_dma_sg() helper video: mx3fb: use dmaengine_terminate_all() API serial: sh-sci: use dmaengine_terminate_all() API net: ks8842: use dmaengine_terminate_all() API mtd: sh_flctl: use dmaengine_terminate_all() API mtd: fsmc_nand: use dmaengine_terminate_all() API V4L2: mx3_camer: use dmaengine_pause() API dmaengine: coh901318: use dmaengine_terminate_all() API pata_arasan_cf: use dmaengine_terminate_all() API dmaengine: edma: check for echan->edesc => NULL in edma_dma_pause() dmaengine: dw: export probe()/remove() and Co to users dmaengine: dw: enable and disable controller when needed dmaengine: dw: always export dw_dma_{en,dis}able dmaengine: dw: introduce dw_dma_on() helper ...
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