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2017-06-27i2c: zx2967: always use the same device when printing errorsWolfram Sang
Let's always use the platform device for dev_* and not sometimes the adapter device as well. Also fix this checkpatch check: CHECK: Macro argument 'i2c' may be better as '(i2c)' to avoid precedence issues Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Shawn Guo <shawnguo@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-06-27i2c: pca-platform: use dev_warn/dev_info instead of printkChris Packham
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-06-27ACPICA: Use designated initializersKees Cook
The struct layout randomization plugin detects and randomizes any structs that contain only function pointers. Once layout is randomized, all initialization must be designated or the compiler will misalign the assignments. This switches all the ACPICA function pointer struct to use designated initializers, using the proposed upstream ACPICA macro: https://github.com/acpica/acpica/pull/248/ Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-27Merge back ACPICA material for v4.13.Rafael J. Wysocki
2017-06-27ACPICA: Update a couple of debug output messagesBob Moore
ACPICA commit 809c1766598c7f3decaeeba2c6ed603c538d0270 Cleanup output. Link: https://github.com/acpica/acpica/commit/809c1766 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-27ACPICA: acpiexec: enhance local signal handlerBob Moore
ACPICA commit ffef4ae9a1b6032ebadeab2c2b806f0e585f0006 Add support for SIGSEGV Improve/cleanup SIGINT handling Link: https://github.com/acpica/acpica/commit/ffef4ae9 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-27ACPICA: Simplify output for the ACPI Debug ObjectBob Moore
ACPICA commit ea08cda9859d9f758f4832400b2d559847c2d52a Cleanup the output, change [Acpi Debug] to Acpi Debug: Link: https://github.com/acpica/acpica/commit/ea08cda9 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-27ACPICA: Improvements for debug output onlyBob Moore
ACPICA commit c3f798b7b0e4f2403d3ce0cc1107ab0932efe1e3 Changes to debug print and debug function tracing. Link: https://github.com/acpica/acpica/commit/c3f798b7 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-27ACPICA: Disassembler: allow conflicting external declarations to be emitted.Erik Schmauss
ACPICA commit 0ed9f2e2ccc112439eaa355b5952a05d6fdb7814 An external declaration is a conflicting declaration when a name has been declared as an external and a named object within the same file. Link: https://github.com/acpica/acpica/commit/0ed9f2e2 Signed-off-by: Erik Schmauss <erik.schmauss@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-27ACPICA: Disassembler: add external op to namespace on first passErik Schmauss
ACPICA commit 117be4819588df3b7146f6f01723639b1d61e775 By doing so, external control method resolutions can be resolved like normal control methods. This eliminates the need to reparse the aml all over again for external control methods that were encoded within the aml with the 0x15 bytecode. Link: https://github.com/acpica/acpica/commit/117be481 Signed-off-by: Erik Schmauss <erik.schmauss@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-27ACPICA: Disassembler: prevent external op's from opening a new scopeErik Schmauss
ACPICA commit c512c2bfcce65b8e8f37d549ac2fa4a1e0182e46 Since Externals could be of ACPI_TYPE_METHOD, there is a possibility that the acpi_ns_lookup may cause a new scope to be opened. Therefore, disable opening the scope for all acpi_ns_lookup invocations that deal with externals. Link: https://github.com/acpica/acpica/commit/c512c2bf Signed-off-by: Erik Schmauss <erik.schmauss@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-27ACPICA: Changed Gbl_disasm_flag to acpi_gbl_disasm_flagErik Schmauss
ACPICA commit 0e0a87111f280c197661689979b2c48443b0326c This is a name change as well as a change in the scope of this flag. This is done so that it can be referenced in the dispatcher. Link: https://github.com/acpica/acpica/commit/0e0a8711 Signed-off-by: Erik Schmauss <erik.schmauss@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-27ACPICA: Changing External to a named objectErik Schmauss
ACPICA commit 0d5dd42fd7d5129835b6d92250378a962eb73cb3 This is done so that the aml parser will build the parse tree of External Op as a named object. This is done to streamline creation of external op parse nodes and facilitate namespace resolution of externals. Link: https://github.com/acpica/acpica/commit/0d5dd42f Signed-off-by: Erik Schmauss <erik.schmauss@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-27ACPICA: Update two error messages to emit control method nameBob Moore
ACPICA commit 73f7fab1376d5dbfda24cf51c1bb04df0d31b48e Intention is to improve debugging by clarifying which method has caused the error, in acpi_evaluate_object_typed. Link: https://github.com/acpica/acpica/commit/73f7fab1 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-27ACPICA: Fix for Device/Thermal objects with ObjectType and DerefOfBob Moore
ACPICA commit 89565151aa4db7b546d4935b187bf2c4a86885ee These types must be special cased because the namespace node does not contain a subobject as do all other types. Link: https://github.com/acpica/acpica/commit/89565151 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-27ACPICA: Update comments, no functional changeCao Jin
ACPICA commit 45eb6384fb47f4fdc5759f63c47a9b6799924972 Link: https://github.com/acpica/acpica/commit/45eb6384 Signed-off-by: Cao Jin <caoj.fnst@cn.fujitsu.com> Signed-off-by: Erik Schmauss <erik.schmauss@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-27ACPICA: Split resource descriptor decode strings to a new fileBob Moore
ACPICA commit 00906ae0aff4c6b76abc232ef99700e7d7c0e325 There are enough of these strings to justify a separate file. Also, these strings are only used for the disassembler and the debugger. Thus, this change improves ACPICA modularity. Link: https://github.com/acpica/acpica/commit/00906ae0 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-27i2c: pca-platform: use device managed allocationsChris Packham
Switch to using the devm_ APIs and remove the now unnecessary error handling and most of the device removal code. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> [wsa: adapted error handling I added in previous patch] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-06-27mtd: st_spi_fsm: remove SPINOR_OP_RDSR2 and use SPINOR_OP_RDCR insteadCyrille Pitchen
The 35h instruction op code has two aliases/macro definitions: - SPINOR_OP_RDCR from include/linux/mtd/spi-nor.h - SPINOR_OP_RDSR2 from drivers/mtd/devices/serial_flash_cmds.h Actually, some manufacturers name the associated internal register Status Register 2 whereas other manufacturers name it Configuration Register hence the two different macros for the very same instruction op code. Since the spi-nor.h file is the reference file for all SPI NOR instruction op codes, this patch removes the definition of the SPINOR_OP_RDSR2 macro. Also the SPINOR_OP_RDSR2 macro will be associated to another instruction op code in a further patch so we need to avoid a conflict defining this macro twice. Indeed the JESD216 rev B specification, defining the SFDP tables, also refers to the 3Eh and 3Fh instruction op codes to write/read the Status Register 2 on some SPI NOR flash memories, the 35h op code still being used to read the Configuration Register/Status Register 2 on other memories. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@microchip.com> Acked-by: Marek Vasut <marek.vasut@gmail.com>
2017-06-27nfp: flower: add Kconfig for flower appJakub Kicinski
Give users an option not to build the flower-offload related code. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27nfp: allocate a private workqueue for driver workJakub Kicinski
Since we grab pf->lock around pci_enable_sriov() we can no longer safely queue work which may also grab that lock onto system workqueue. pci_enable_sriov() will flush system workqueue as part to wait for VF probing. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27nfp: reorder SR-IOV config and nfp_app SR-IOV callbacksJakub Kicinski
We previously assumed that app callback can be guaranteed to be executed before SR-IOV is actually enabled. Given that we can't guarantee that SR-IOV will be disabled during probe or that we will be able to disable it on remove, we should reorder the callbacks. We should also call the app's sriov_enable if SR-IOV was enabled during probe. Application FW must be able to disable VFs internally and not depend on them being removed at PCIe level. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27nfp: handle SR-IOV already enabled when driver is probingJakub Kicinski
We assumed that when we probe number of enabled VFs will be at 0. This doesn't have to be the case for example if previous driver left SR-IOV enabled due to some VFs being assigned. Read the number of VFs enabled. Fail probe if it's above current FWs limit. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27nfp: wire get_phys_port_name on representorsJakub Kicinski
Make nfp_port_get_phys_port_name() support new port types and wire it up to representors' struct net_device_ops. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27nfp: allow converting representor's netdev into nfp_portJakub Kicinski
Based on struct net_device_ops figure out if netdev is a nfp_repr. Use this knowledge to convert netdev directly to nfp_port. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27nfp: move representors' struct net_device_ops to shared codeJakub Kicinski
Apps shouldn't declare their own struct net_device_ops for representors, this makes sharing code harder. Add necessary nfp_app callbacks and move the definition of representors' struct net_device_ops to common code. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27nfp: make the representor get stats app-independentJakub Kicinski
Thanks to the fact that all representors will now have an nfp_port, we can depend on information there to provide a app-independent .ndo_get_stats64(). Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27nfp: spawn nfp_ports for PF and VF portsJakub Kicinski
nfp_port is an abstraction which is supposed to allow us sharing code between different netdev types (vNIC vs repr). Spawn ports for PFs and VFs to enable this sharing. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27nfp: add nfp_app cleanup callback and make flower use itJakub Kicinski
Add a cleanup callback for undoing what app init callback did. Make flower allocate its private structure on init and free it from the new callback. While at it remember to set the app pointer to NULL on the error path to avoid any races while probe path unwinds. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27nfp: remove unused nfp_cpp_area_check_range()Jakub Kicinski
Remove unused nfp_cpp_area_check_range() function. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27nfp: add helper for mapping runtime symbolsJakub Kicinski
Move most of the helper for mapping RTsyms from nfp_net_main.c to nfpcore. Use the new helper directly for mapping MAC statistics, since they don't need to include the PCIe interface ID in the symbol name. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27nfp: move area mapping helper into nfpcoreJakub Kicinski
nfp_net_map_area() is a helper for mapping areas of NFP memory defined in nfp_net_main.c. Move it to nfpcore to allow reuse and rename accordingly. Create an additional helper - nfp_cpp_area_alloc_acquire() the opposite of already existing nfp_cpp_area_release_free(). Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27nfp: explicitly check if application FW is loadedJakub Kicinski
We support application FW being either loaded automatically at boot from flash or (more commonly) by the driver from disk. If FW is not found on disk and nothing is preloaded users are faced with this unintuitive error: nfp 0000:04:00.0: nfp: Failed to find PF symbol _pf0_net_bar0 We can do better. Since we rely on symbol table being present - check early if it could be correctly read out of from the device and if not print a more informative message. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27i2c: pca-platform: add devicetree awarenessChris Packham
Allow devices that use this driver to be registered via a devicetree. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> [wsa: fixed leakage when registering GPIO failed] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-06-27net: usb: asix88179_178a: Add support for the Belkin B2B128Andrew F. Davis
The Belkin B2B128 is a USB 3.0 Hub + Gigabit Ethernet Adapter, the Ethernet adapter uses the ASIX AX88179 USB 3.0 to Gigabit Ethernet chip supported by this driver, add the USB ID for the same. This patch is based on work by Geoffrey Tran <geoffrey.tran@gmail.com> who has indicated they would like this upstreamed by someone more familiar with the upstreaming process. Signed-off-by: Andrew F. Davis <afd@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27fsl/fman: add dependency on HAS_DMAMadalin Bucur
A previous commit (5567e989198b5a8d) inserted a dependency on DMA API that requires HAS_DMA to be added in Kconfig. Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27i2c: pca-platform: switch to struct gpio_descChris Packham
Make use of struct gpio_desc which allows us to specify the active state of the reset pin. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-06-27mtd: spi-nor: cqspi: remove duplicate constArnd Bergmann
The variable was already marked 'const' before the previous patch, but the qualifier was in an unusual place, and now the extra 'const' causes a harmless warning: drivers/mtd/spi-nor/cadence-quadspi.c:1286:34: error: duplicate 'const' declaration specifier [-Werror=duplicate-decl-specifier] This removes the other 'const' instead. Fixes: f993c123b461 ("mtd: spi-nor: cqspi: make of_device_ids const") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
2017-06-27dm thin: do not queue freed thin mapping for next stage processingVallish Vaidyeshwara
process_prepared_discard_passdown_pt1() should cleanup dm_thin_new_mapping in cases of error. dm_pool_inc_data_range() can fail trying to get a block reference: metadata operation 'dm_pool_inc_data_range' failed: error = -61 When dm_pool_inc_data_range() fails, dm thin aborts current metadata transaction and marks pool as PM_READ_ONLY. Memory for thin mapping is released as well. However, current thin mapping will be queued onto next stage as part of queue_passdown_pt2() or passdown_endio(). This dangling thin mapping memory when processed and accessed in next stage will lead to device mapper crashing. Code flow without fix: -> process_prepared_discard_passdown_pt1(m) -> dm_thin_remove_range() -> discard passdown --> passdown_endio(m) queues m onto next stage -> dm_pool_inc_data_range() fails, frees memory m but does not remove it from next stage queue -> process_prepared_discard_passdown_pt2(m) -> processes freed memory m and crashes One such stack: Call Trace: [<ffffffffa037a46f>] dm_cell_release_no_holder+0x2f/0x70 [dm_bio_prison] [<ffffffffa039b6dc>] cell_defer_no_holder+0x3c/0x80 [dm_thin_pool] [<ffffffffa039b88b>] process_prepared_discard_passdown_pt2+0x4b/0x90 [dm_thin_pool] [<ffffffffa0399611>] process_prepared+0x81/0xa0 [dm_thin_pool] [<ffffffffa039e735>] do_worker+0xc5/0x820 [dm_thin_pool] [<ffffffff8152bf54>] ? __schedule+0x244/0x680 [<ffffffff81087e72>] ? pwq_activate_delayed_work+0x42/0xb0 [<ffffffff81089f53>] process_one_work+0x153/0x3f0 [<ffffffff8108a71b>] worker_thread+0x12b/0x4b0 [<ffffffff8108a5f0>] ? rescuer_thread+0x350/0x350 [<ffffffff8108fd6a>] kthread+0xca/0xe0 [<ffffffff8108fca0>] ? kthread_park+0x60/0x60 [<ffffffff81530b45>] ret_from_fork+0x25/0x30 The fix is to first take the block ref count for discarded block and then do a passdown discard of this block. If block ref count fails, then bail out aborting current metadata transaction, mark pool as PM_READ_ONLY and also free current thin mapping memory (existing error handling code) without queueing this thin mapping onto next stage of processing. If block ref count succeeds, then passdown discard of this block. Discard callback of passdown_endio() will queue this thin mapping onto next stage of processing. Code flow with fix: -> process_prepared_discard_passdown_pt1(m) -> dm_thin_remove_range() -> dm_pool_inc_data_range() --> if fails, free memory m and bail out -> discard passdown --> passdown_endio(m) queues m onto next stage Cc: stable <stable@vger.kernel.org> # v4.9+ Reviewed-by: Eduardo Valentin <eduval@amazon.com> Reviewed-by: Cristian Gafton <gafton@amazon.com> Reviewed-by: Anchal Agarwal <anchalag@amazon.com> Signed-off-by: Vallish Vaidyeshwara <vallish@amazon.com> Reviewed-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2017-06-27vxlan: fix incorrect nlattr access in MTU checkMatthias Schiffer
The access to the wrong variable could lead to a NULL dereference and possibly other invalid memory reads in vxlan newlink/changelink requests with a IFLA_MTU attribute. Fixes: a985343ba906 "vxlan: refactor verification and application of configuration" Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27mmc/block: remove a call to blk_queue_bounce_limitChristoph Hellwig
BLK_BOUNCE_ANY is the defauly now, so the call is superflous. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-06-27dm: don't set bounce limitChristoph Hellwig
Now all queues allocators come without abounce limit by default, dm doesn't have to override this anymore. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-06-27block: don't set bounce limit in blk_init_queueChristoph Hellwig
Instead move it to the callers. Those that either don't use bio_data() or page_address() or are specific to architectures that do not support highmem are skipped. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-06-27block: don't set bounce limit in blk_init_allocated_queueChristoph Hellwig
And just move it into scsi_transport_sas which needs it due to low-level drivers directly derferencing bio_data, and into blk_init_queue_node, which will need a further push into the callers. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-06-27blk-mq: don't bounce by defaultChristoph Hellwig
For historical reasons we default to bouncing highmem pages for all block queues. But the blk-mq drivers are easy to audit to ensure that we don't need this - scsi and mtip32xx set explicit limits and everyone else doesn't have any particular ones. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-06-27block: don't bother with bounce limits for make_request driversChristoph Hellwig
We only call blk_queue_bounce for request-based drivers, so stop messing with it for make_request based drivers. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-06-27blk-map: call blk_queue_bounce from blk_rq_append_bioChristoph Hellwig
This makes moves the knowledge about bouncing out of the callers into the block core (just like we do for the normal I/O path), and allows to unexport blk_queue_bounce. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-06-27pktcdvd: remove the call to blk_queue_bounceChristoph Hellwig
pktcdvd is a make_request based stacking driver and thus doesn't have any addressing limits on it's own. It also doesn't use bio_data() or page_address(), so it doesn't need a lowmem bounce either. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-06-27nvme: add support for streams and directivesJens Axboe
This adds support for Directives in NVMe, particular for the Streams directive. Support for Directives is a new feature in NVMe 1.3. It allows a user to pass in information about where to store the data, so that it the device can do so most effiently. If an application is managing and writing data with different life times, mixing differently retentioned data onto the same locations on flash can cause write amplification to grow. This, in turn, will reduce performance and life time of the device. Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-06-27vsprintf: Add %p extension "%pOF" for device treePantelis Antoniou
90% of the usage of device node's full_name is printing it out in a kernel message. However, storing the full path for every node is wasteful and redundant. With a custom format specifier, we can generate the full path at run-time and eventually remove the full path from every node. For instance typical use is: pr_info("Frobbing node %s\n", node->full_name); Which can be written now as: pr_info("Frobbing node %pOF\n", node); '%pO' is the base specifier to represent kobjects with '%pOF' representing struct device_node. Currently, struct device_node is the only supported type of kobject. More fine-grained control of formatting includes printing the name, flags, path-spec name and others, explained in the documentation entry. Originally written by Pantelis, but pretty much rewrote the core function using existing string/number functions. The 2 passes were unnecessary and have been removed. Also, updated the checkpatch.pl check. The unittest code was written by Grant Likely. Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Rob Herring <robh@kernel.org>
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