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2017-01-10ata: pass queued command to ->sff_data_xfer methodBartlomiej Zolnierkiewicz
For Atari Falcon PATA support we need to check the current command in its ->sff_data_xfer method. Update core code and all users accordingly. There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-10ata: allow subsystem to be used on m68k archBartlomiej Zolnierkiewicz
When libata was merged m68k lacked IOMAP support. This has not been true for a long time now so allow subsystem to be used on m68k. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-10libata: switch to dynamic allocation instead of ata_scsi_rbufChristoph Hellwig
Note of the emulated commands in the pageout/pagein path, so just do a GFP_NOIO dynamic allocation. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-10libata: don't call ata_scsi_rbuf_fill for command without a response bufferChristoph Hellwig
No need to copy a zeroed buffer to the caller if the command is defined to not have a response in the SCSI spec. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-10libata: call ->scsi_done from ata_scsi_simulateChristoph Hellwig
We always need to call ->scsi_done after we've finished emulating a command, so do it in a single place at the end of ata_scsi_simulate. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-10libata: remove the done callback from ata_scsi_argsChristoph Hellwig
It's always the scsi_done callback, and we can get at that easily in the place where ->done is called. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-10libata: move struct ata_scsi_args to libata-scsi.cChristoph Hellwig
It's only used in libata-scsi.c, so move it closer to the users. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-10libata: avoid global response buffer in atapi_qc_completeChristoph Hellwig
We only need to look at 4 bytes of the inquiry response for ATAPI devices. Instead of using the global ata_scsi_rbuf just use a a stack buffer. Also factor the fixup into it's own little helper function to make it more readable. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-09libata-eh: Use switch() instead of sparse array for protocol stringsGeert Uytterhoeven
Replace the sparse 256-pointer array for looking up protocol strings by a switch() statement to reduce kernel size. According to bloat-o-meter, this saves 910 bytes on m68k (32-bit), and 1892 bytes on arm64 (64-bit). Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-09ata: sata_mv: Convert to devm_ioremap_resource()Andy Shevchenko
Convert to devm_ioremap_resource() which provides more consistent error handling. Note that devm_ioremap_resource() provides its own error messages. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-09Merge branch 'for-4.10-fixes' into for-4.11Tejun Heo
2017-01-06ata: sata_mv:- Handle return value of devm_ioremap.Arvind Yadav
Here, If devm_ioremap will fail. It will return NULL. Then hpriv->base = NULL - 0x20000; Kernel can run into a NULL-pointer dereference. This error check will avoid NULL pointer dereference. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: stable@vger.kernel.org
2017-01-06libata: Fix ATA request senseDamien Le Moal
For an ATA device supporting the sense data reporting feature set, a failed command will trigger the execution of ata_eh_request_sense if the result task file of the failed command has the ATA_SENSE bit set (sense data available bit). ata_eh_request_sense executes the REQUEST SENSE DATA EXT command to retrieve the sense data of the failed command. On success of REQUEST SENSE DATA EXT, the ATA_SENSE bit will NOT be set (the command succeeded) but ata_eh_request_sense nevertheless tests the availability of sense data by testing that bit presence in the result tf of the REQUEST SENSE DATA EXT command. This leads us to falsely assume that request sense data failed and to the warning message: atax.xx: request sense failed stat 50 emask 0 Upon success of REQUEST SENSE DATA EXT, set the ATA_SENSE bit in the result task file command so that sense data can be returned by ata_eh_request_sense. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: stable@vger.kernel.org
2017-01-06ata: sata_mv: fix module license specificationUwe Kleine-König
The header allows GPL v2 only, so declare "GPL v2" for MODULE_LICENSE Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-06ahci: imx: Add imx53 SATA temperature sensor supportCsaba Kertesz
Add a hwmon entry to get the temperature from the die of imx53 SATA. The original patch was made by Richard Zhu for kernel 2.6.x: ENGR00134041-MX53-Add-the-SATA-AHCI-temperature-monitor.patch Signed-off-by: Fabien Lahoudere <fabien.lahoudere@collabora.co.uk> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-06libata: apply MAX_SEC_1024 to all CX1-JB*-HP devicesTejun Heo
Marko reports that CX1-JB512-HP shows the same timeout issues as CX1-JB256-HP. Let's apply MAX_SEC_128 to all devices in the series. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Marko Koski-Vähälä <marko@koski-vahala.com> Cc: stable@vger.kernel.org # v3.19+
2017-01-06ata: ahci_xgene: free structure returned by acpi_get_object_info()Michał Kępień
acpi_get_object_info() allocates the returned structure, which the caller has to free when the call succeeds. Free it when appropriate. Fixes: c9802a4be661 ("ata: ahci_xgene: Add AHCI Support for 2nd HW version of APM X-Gene SoC AHCI SATA Host controller.") Signed-off-by: Michał Kępień <kernel@kempniu.pl> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-06libata: Protect DMA core code by #ifdef CONFIG_HAS_DMAGeert Uytterhoeven
If NO_DMA=y: ERROR: "bad_dma_ops" [drivers/ata/libata.ko] undefined! To fix this, protect the DMA code by #ifdef CONFIG_HAS_DMA, and provide dummies of ata_sg_clean() and ata_sg_setup() for the !CONFIG_HAS_DMA case. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-06libata: Make ata_sg_clean() static againGeert Uytterhoeven
Commit 70e6ad0c6d1e6cb9 ("[PATCH] libata: prepare ata_sg_clean() for invocation from EH") made ata_sg_clean() global, but no user outside libata-core.c has ever materialized. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-06ata: AHCI and other non-SFF native drivers should depend on HAS_DMAGeert Uytterhoeven
If NO_DMA=y: ERROR: "bad_dma_ops" [drivers/ata/libahci_platform.ko] undefined! ERROR: "dmam_alloc_coherent" [drivers/ata/libahci.ko] undefined! Add a block dependency on HAS_DMA to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-06ata: ATA_BMDMA should depend on HAS_DMAGeert Uytterhoeven
If NO_DMA=y: ERROR: "dmam_alloc_coherent" [drivers/ata/libata.ko] undefined! Add a dependency on HAS_DMA to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-06ata: SATA_HIGHBANK should depend on HAS_DMAGeert Uytterhoeven
If NO_DMA=y: ERROR: "bad_dma_ops" [drivers/ata/sata_highbank.ko] undefined! Add a dependency on HAS_DMA to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-06ata: SATA_MV should depend on HAS_DMAGeert Uytterhoeven
If NO_DMA=y: ERROR: "dma_pool_alloc" [drivers/ata/sata_mv.ko] undefined! ERROR: "dmam_pool_create" [drivers/ata/sata_mv.ko] undefined! ERROR: "dma_pool_free" [drivers/ata/sata_mv.ko] undefined! Add a dependency on HAS_DMA to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-12-13Merge branch 'for-4.10' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata Pull another libata patch from Tejun Heo: "One more patch from Adam added. It makes libata skip probing for NCQ prio unless the feature is explicitly requested by the user. This is necessary because some controllers lock up after the optional feature is probed" * 'for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: ata: avoid probing NCQ Prio Support if not explicitly requested
2016-12-13ata: avoid probing NCQ Prio Support if not explicitly requestedAdam Manzanares
Previously, when the ata device was being initialized we were probing for NCQ prio support by checking the identify information and also checking the log page that holds information about ncq prio support. This caused an error on an Intel HBA so the code is now updated to only probe for NCQ prio support when the sysfs variable controlling NCQ prio support is enabled. tj: Update formatting, switch to spin_[un]lock_irq() and update locking a bit, use REVALIDATE instead of RESET, and return -EIO instead of -EINVAL on config failure. Signed-off-by: Adam Manzanares <adam.manzanares@wdc.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-12-13Merge branch 'for-4.10' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata Pull libata updates from Tejun Heo: - Adam added opt-in ATA command priority support. - There are machines which hide multiple nvme devices behind an ahci BAR. Dan Williams proposed a solution to force-switch the mode but deemed too hackishd. People are gonna discuss the proper way to handle the situation in nvme standard meetings. For now, detect and warn about the situation. - Low level driver specific changes. Christoph Hellwig pipes in about the hidden nvme warning: "I wish that was the case. We've pretty much agreed that we'll want to implement it as a virtual PCIe root bridge, similar to Intels other 'innovation' VMD that we work around that way. But Intel management has apparently decided that they don't want to spend more cycles on this now that Lenovo has an optional BIOS that doesn't force this broken mode anymore, and no one outside of Intel has enough information to implement something like this. So for now I guess this warning is it, until Intel reconsideres and spends resources on fixing up the damage their Chipset people caused" * 'for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: ahci: warn about remapped NVMe devices ahci-remap.h: add ahci remapping definitions nvme: move NVMe class code to pci_ids.h pata: imx: support controller modes up to PIO4 pata: imx: add support of setting timings for PIO modes pata: imx: set controller PIO mode with .set_piomode callback pata: imx: sort headers out ata: set ncq_prio_enabled iff device has support ata: ATA Command Priority Disabled By Default ata: Enabling ATA Command Priorities block: Add iocontext priority to request ahci: qoriq: added ls1046a platform support
2016-12-12Merge tag 'docs-4.10' of git://git.lwn.net/linuxLinus Torvalds
Pull documentation update from Jonathan Corbet: "These are the documentation changes for 4.10. It's another busy cycle for the docs tree, as the sphinx conversion continues. Highlights include: - Further work on PDF output, which remains a bit of a pain but should be more solid now. - Five more DocBook template files converted to Sphinx. Only 27 to go... Lots of plain-text files have also been converted and integrated. - Images in binary formats have been replaced with more source-friendly versions. - Various bits of organizational work, including the renaming of various files discussed at the kernel summit. - New documentation for the device_link mechanism. ... and, of course, lots of typo fixes and small updates" * tag 'docs-4.10' of git://git.lwn.net/linux: (193 commits) dma-buf: Extract dma-buf.rst Update Documentation/00-INDEX docs: 00-INDEX: document directories/files with no docs docs: 00-INDEX: remove non-existing entries docs: 00-INDEX: add missing entries for documentation files/dirs docs: 00-INDEX: consolidate process/ and admin-guide/ description scripts: add a script to check if Documentation/00-INDEX is sane Docs: change sh -> awk in REPORTING-BUGS Documentation/core-api/device_link: Add initial documentation core-api: remove an unexpected unident ppc/idle: Add documentation for powersave=off Doc: Correct typo, "Introdution" => "Introduction" Documentation/atomic_ops.txt: convert to ReST markup Documentation/local_ops.txt: convert to ReST markup Documentation/assoc_array.txt: convert to ReST markup docs-rst: parse-headers.pl: cleanup the documentation docs-rst: fix media cleandocs target docs-rst: media/Makefile: reorganize the rules docs-rst: media: build SVG from graphviz files docs-rst: replace bayer.png by a SVG image ...
2016-12-07libata-scsi: disable SCT Write Same for the momentNicolai Stange
SCT Write Same support had been introduced with commit 7b2030942859 ("libata: Add support for SCT Write Same") Some problems, namely excessive userspace segfaults, had been reported at http://lkml.kernel.org/r/20160908192736.GA4356@gmail.com This lead to commit 0ce1b18c42a5 ("libata: Some drives failing on SCT Write Same") which strived to disable SCT Write Same on !ZAC devices. Due to the way this was done and to the logic in sd_config_write_same(), this didn't work for those devices that have ->max_ws_blocks > SD_MAX_WS10_BLOCKS: for these, ->no_write_same and ->max_write_same_sectors would still be non-zero, but ->ws10 == ->ws16 == 0. This would cause sd_setup_write_same_cmnd() to demultiplex REQ_OP_WRITE_SAME requests to WRITE_SAME, and these in turn aren't supported by libata-scsi: EXT4-fs (dm-1): Delayed block allocation failed for inode 2625094 at logical offset 2032 with max blocks 2 with error 121 EXT4-fs (dm-1): This should not happen!! Data will be lost 121 == EREMOTEIO is what scsi_io_completion() asserts in case of invalid opcodes. Back to the original problem of userspace segfaults: this can be tracked down to ata_format_sct_write_same() overwriting the input page. Sometimes, this page is ZERO_PAGE(0) which ceases to be filled with zeros from that point on. Since ZERO_PAGE(0) is used for userspace .bss mappings, code of the following is doomed: static char *a = NULL; /* .bss */ ... if (a) *a = 'a'; This problem is not solved by disabling SCT Write Same for !ZAC devices only. It can certainly be fixed, but the final release is quite close -- so disable SCT Write Same for all ATA devices rather than introducing some SCT key buffer allocation schemes at this point. Fixes: 7b2030942859 ("libata: Add support for SCT Write Same") Signed-off-by: Nicolai Stange <nicstange@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-12-05ahci: warn about remapped NVMe devicesChristoph Hellwig
Some Intel ahci implementations have a completely broken remapping mode where they hide one or more NVMe devices behind the bar of an AHCI device. Intel refuses to let the OS reprogram the BIOS to switch out of this mode at runtime, and so far we're not come up with another good way to undo the mess that the Chipset people created. So for now the only thing we can do is to alert users about this situation and switch to the faster and much saner so called "AHCI" mode insted of the RAID mode in the BIOS so that the BIOS does not hide the NVMe devices from us. The sitation is even worse as at least one vendor (thanks a lot Lenovo..) has started hardcoding their BIOS into the "RAID" mode even for laptops that don't use AHCI _at all_ and just have a single NVMe device. For now there is an unspported Linux-only BIOS that undoes this braindamage, but we'll have to see if things are getting better or worse from here. Based on an earlier patch from Dan Williams <dan.j.williams@intel.com>. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-11-29ata: sata_mv: check for errors when parsing nr-ports from dtUwe Kleine-König
If the nr-ports property is missing ata_host_alloc_pinfo is called with n_ports = 0. This results in host->ports[0] = NULL which later makes mv_init_host() oops when dereferencing this pointer. Instead be a bit more cooperative and fail the probing with an error message. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-11-21ahci: always fall back to single-MSI modeChristoph Hellwig
Don't try to guess what the errors from pci_irq_alloc_vectors mean, as that's too fragile. Instead always try allocating a single vector when multi-MSI mode fails. This makes various intel Desktop and Laptop CPUs use MSI again. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Michael Marley <michael@michaelmarley.com> Tested-by: Michael Marley <michael@michaelmarley.com> Fixes: 0b9e2988ab22 ("ahci: use pci_alloc_irq_vectors") Signed-off-by: Tejun Heo <tj@kernel.org>
2016-11-18Merge tag 'v4.9-rc4' into soundJonathan Corbet
Bring in -rc4 patches so I can successfully merge the sound doc changes.
2016-11-09pata: imx: support controller modes up to PIO4Vladimir Zapolskiy
Having timing settings for all supported by the controller PIO modes now it is possible to expand its PIO mask. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-11-09pata: imx: add support of setting timings for PIO modesVladimir Zapolskiy
The controller is capable to operate in up to PIO4 mode, however before the change the driver relies on timing settings done by a bootloader for PIO0 mode only. The change adds more flexibility in PIO mode selection at runtime and makes the driver to work even if bootloader does not preset ATA timings. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-11-09pata: imx: set controller PIO mode with .set_piomode callbackVladimir Zapolskiy
Convert .set_mode callback function to more specific .set_piomode, the driver does not have support of DMA modes, thus a simpler version of the callback is preferred. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-11-09pata: imx: sort headers outVladimir Zapolskiy
Put headers in alphabetic order and remove redundant ones. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-11-01libata-scsi: Fixup ata_gen_passthru_sense()Hannes Reinecke
There's a typo in ata_gen_passthru_sense(), where the first byte would be overwritten incorrectly later on. Reported-by: Charles Machalow <csm10495@gmail.com> Signed-off-by: Hannes Reinecke <hare@suse.com> Fixes: 11093cb1ef56 ("libata-scsi: generate correct ATA pass-through sense") Cc: stable@vger.kernel.org # v4.7+ Signed-off-by: Tejun Heo <tj@kernel.org>
2016-10-25ahci: fix the single MSI-X case in ahci_init_oneChristoph Hellwig
We need to make sure hpriv->irq is set properly if we don't use per-port vectors, so switch from blindly assigning pdev->irq to using pci_irq_vector, which handles all interrupt types correctly. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Robert Richter <robert.richter@cavium.com> Tested-by: Robert Richter <robert.richter@cavium.com> Tested-by: David Daney <ddaney.cavm@gmail.com> Fixes: 0b9e2988ab22 ("ahci: use pci_alloc_irq_vectors") Signed-off-by: Tejun Heo <tj@kernel.org>
2016-10-24docs: fix locations of several documents that got movedMauro Carvalho Chehab
The previous patch renamed several files that are cross-referenced along the Kernel documentation. Adjust the links to point to the right places. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-10-20ahci: fix nvec checkChristoph Hellwig
commit 17a51f12 ("ahci: only try to use multi-MSI mode if there is more than 1 port") lead to a case where nvec isn't initialized before it's used. Fix this by moving the check into the n_ports conditional. Reported-and-reviewed-by Colin Ian King <colin.king@canonical.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-10-20ata: set ncq_prio_enabled iff device has supportAdam Manzanares
We previously had a check to see if the device has support for prioritized ncq commands and a check to see if a device flag is set, through a sysfs variable, in order to send a prioritized command. This patch only allows the sysfs variable to be set if the device supports prioritized commands enabling one check in ata_build_rw_tf in order to determine whether or not to send a prioritized command. This patch depends on ata: ATA Command Priority Disabled By Default tj: Minor subject and formatting updates. Signed-off-by: Adam Manzanares <adam.manzanares@wdc.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-10-19ata: ATA Command Priority Disabled By DefaultAdam Manzanares
Add a sysfs entry to turn on priority information being passed to a ATA device. By default this feature is turned off. This patch depends on ata: Enabling ATA Command Priorities tj: Renamed ncq_prio_on to ncq_prio_enable and removed trivial ata_ncq_prio_on() and open-coded the test. Signed-off-by: Adam Manzanares <adam.manzanares@hgst.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-10-19ata: Enabling ATA Command PrioritiesAdam Manzanares
This patch checks to see if an ATA device supports NCQ command priorities. If so and the user has specified an iocontext that indicates IO_PRIO_CLASS_RT then we build a tf with a high priority command. This is done to improve the tail latency of commands that are high priority by passing priority to the device. tj: Removed trivial ata_ncq_prio_enabled() and open-coded the test. Signed-off-by: Adam Manzanares <adam.manzanares@hgst.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-10-19ahci: qoriq: added ls1046a platform supportTang Yuantian
Ls1046a is a new introduced soc which supports ATA3.0. Signed-off-by: Tang Yuantian <yuantian.tang@nxp.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-10-19ahci: only try to use multi-MSI mode if there is more than 1 portChristoph Hellwig
We should only try to allocate multiple MSI or MSI-X vectors if the device actually has multiple ports. Otherwise pci_alloc_irq_vectors will return a single vector due to n_ports = 1, in which case we shouldn't set the AHCI_HFLAG_MULTI_MSI flag. Signed-off-by: Christoph Hellwig <hch@lst.de> Fixes: 0b9e2988 ("ahci: use pci_alloc_irq_vectors") Reported-by: Emmanuel Benisty <benisty.e@gmail.com> Tested-by: Emmanuel Benisty <benisty.e@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-09-30ahci: qoriq: Revert "ahci: qoriq: Disable NCQ on ls2080a SoC"Tang Yuantian
This reverts commit 640847298e2b7f19 ("ahci: qoriq: Disable NCQ on ls2080a SoC") The erratum has been fixed in ls2080a v2.0 and later soc. In reality, customer will not get any ls2080a v1.0 soc. Neither apply to any products. So reverting this commit won't create any side effect. Blacklisting v2.0 could also be a option, but that needs to check the soc version which is not suitable in the driver. Signed-off-by: Tang Yuantian <yuantian.tang@nxp.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-09-22pata_at91: Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERRHarman Kalra
Signed-off-by: Harman Kalra <harman4linux@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-09-22ata: Replace BUG() with BUG_ON().Harman Kalra
Replace BUG() with BUG_ON(). Caught by coccinelle. Signed-off-by: Harman Kalra <harman4linux@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-09-20ata: sata_mv: Replacing dma_pool_alloc and memset with a single call ↵Harman Kalra
dma_pool_zalloc. Replacing dma_pool_alloc and memset with a single call to dma_pool_zalloc Signed-off-by: Harman Kalra <harman4linux@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-09-09libata: Some drives failing on SCT Write SameShaun Tancheff
Restrict support SCT Write Same to devices which also support ZAC where support is required. Reported-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Shaun Tancheff <shaun.tancheff@seagate.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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