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2017-02-21Merge branch 'for-4.11' of ↵Linus Torvalds23-187/+608
git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata Pull libata updates from Tejun Heo: - Bartlomiej added pata_falcon - Christoph is trying to remove use of static 4k buf. It's still WIP - config cleanup around HAS_DMA - other fixes and driver-specific changes * 'for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (29 commits) ata: pata_of_platform: using of_property_read_u32() helper pata_atiixp: Don't use unconnected secondary port on SB600/SB700 libata-sff: Don't scan disabled ports when checking for legacy mode. pata_octeon_cf: remove unused local variables from octeon_cf_set_piomode() ahci: qoriq: added ls2088a platforms support ahci: qoriq: report error when ecc register address is missing in dts ahci: qoriq: added a condition to enable dma coherence Revert "libata: switch to dynamic allocation instead of ata_scsi_rbuf" ahci: imx: fix building without hwmon or thermal ata: add Atari Falcon PATA controller driver ata: pass queued command to ->sff_data_xfer method ata: allow subsystem to be used on m68k arch libata: switch to dynamic allocation instead of ata_scsi_rbuf libata: don't call ata_scsi_rbuf_fill for command without a response buffer libata: call ->scsi_done from ata_scsi_simulate libata: remove the done callback from ata_scsi_args libata: move struct ata_scsi_args to libata-scsi.c libata: avoid global response buffer in atapi_qc_complete libata-eh: Use switch() instead of sparse array for protocol strings ata: sata_mv: Convert to devm_ioremap_resource() ...
2017-02-21Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds3-2/+1
Pull SCSI updates from James Bottomley: "This update includes the usual round of major driver updates (ncr5380, ufs, lpfc, be2iscsi, hisi_sas, storvsc, cxlflash, aacraid, megaraid_sas, ...). There's also an assortment of minor fixes and the major update of switching a bunch of drivers to pci_alloc_irq_vectors from Christoph" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (188 commits) scsi: megaraid_sas: handle dma_addr_t right on 32-bit scsi: megaraid_sas: array overflow in megasas_dump_frame() scsi: snic: switch to pci_irq_alloc_vectors scsi: megaraid_sas: driver version upgrade scsi: megaraid_sas: Change RAID_1_10_RMW_CMDS to RAID_1_PEER_CMDS and set value to 2 scsi: megaraid_sas: Indentation and smatch warning fixes scsi: megaraid_sas: Cleanup VD_EXT_DEBUG and SPAN_DEBUG related debug prints scsi: megaraid_sas: Increase internal command pool scsi: megaraid_sas: Use synchronize_irq to wait for IRQs to complete scsi: megaraid_sas: Bail out the driver load if ld_list_query fails scsi: megaraid_sas: Change build_mpt_mfi_pass_thru to return void scsi: megaraid_sas: During OCR, if get_ctrl_info fails do not continue with OCR scsi: megaraid_sas: Do not set fp_possible if TM capable for non-RW syspdIO, change fp_possible to bool scsi: megaraid_sas: Remove unused pd_index from megasas_build_ld_nonrw_fusion scsi: megaraid_sas: megasas_return_cmd does not memset IO frame to zero scsi: megaraid_sas: max_fw_cmds are decremented twice, remove duplicate scsi: megaraid_sas: update can_queue only if the new value is less scsi: megaraid_sas: Change max_cmd from u32 to u16 in all functions scsi: megaraid_sas: set pd_after_lb from MR_BuildRaidContext and initialize pDevHandle to MR_DEVHANDLE_INVALID scsi: megaraid_sas: latest controller OCR capability from FW before sending shutdown DCMD ...
2017-02-17Merge branch 'for-4.11/next' into for-4.11/linus-mergeJens Axboe1-2/+2
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-06scsi: remove eh_timed_out methods in the transport templateChristoph Hellwig3-2/+1
Instead define the timeout behavior purely based on the host_template eh_timed_out method and wire up the existing transport implementations in the host templates. This also clears up the confusion that the transport template method overrides the host template one, so some drivers have to re-override the transport template one. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-31block: introduce blk_rq_is_passthroughChristoph Hellwig1-1/+1
This can be used to check for fs vs non-fs requests and basically removes all knowledge of BLOCK_PC specific from the block layer, as well as preparing for removing the cmd_type field in struct request. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-27block: split scsi_request out of struct requestChristoph Hellwig1-1/+1
And require all drivers that want to support BLOCK_PC to allocate it as the first thing of their private data. To support this the legacy IDE and BSG code is switched to set cmd_size on their queues to let the block layer allocate the additional space. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-24ata: pata_of_platform: using of_property_read_u32() helperKefeng Wang1-7/+2
Using better of_property_read_u32() than generic of_get_property(). Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-23pata_atiixp: Don't use unconnected secondary port on SB600/SB700Darren Stevens1-0/+5
The SB600 and SB700 southbridge chips from ATI/AMD only have connections for the primary IDE port. As these chips have unique pci device ID's use these to mark the secondary port as 'dummy' Signed-off-by: Darren Stevens <darren@stevens-zone.net> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-23libata-sff: Don't scan disabled ports when checking for legacy mode.Darren Stevens1-3/+13
libata-sff.c checks for legacy mode by testing if both primary and secondary ports on a controller are in legacy mode and selects legacy if either one is. However on some south bridge chips (e.g AMD SB600/SB700) the secondary port is not wired, and when it is disabled by setting the disable bit in the PCI header it appears as a fixed legacy port. Prevent incorrect detection by not testing ports that are marked as 'dummy' tj: Addressed Sergei's review points. Other style edits. Signed-off-by: Darren Stevens <darren@stevens-zone.net> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
2017-01-23pata_octeon_cf: remove unused local variables from octeon_cf_set_piomode()Tejun Heo1-8/+0
@t1 and @t2i are calculated along with @t2 but never used. Drop them. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: David Binderman <dcb314@hotmail.com>
2017-01-20ahci: qoriq: added ls2088a platforms supportTang Yuantian1-0/+9
Ls2088a is new introduced arm-based soc with sata support with following features: 1. Complies with the serial ATA 3.0 specification and the AHCI 1.3.1 specification 2. Contains a high-speed descriptor-based DMA controller 3. Supports the following: a. Speeds of 1.5 Gb/s (first-generation SATA), 3 Gb/s (second-generation SATA), and 6 Gb/s (third-generation SATA) b. FIS-based switching c. Native command queuing (NCQ) commands d. Port multiplier operation e. Asynchronous notification f. SATA BIST mode Signed-off-by: Tang Yuantian <yuantian.tang@nxp.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-20ahci: qoriq: report error when ecc register address is missing in dtsTang Yuantian1-2/+9
For ls1021a, and armv8 chasis 2 socs, sata ecc must be disabled. If ecc register is not found in sata node in dts, report error. This is a chip erratum described as bellow: The Read DMA operations get early termination indication from the controller. This issue is observed as CRC error in the status registers. The issue is due to address collision at address 0 in the dual port memory. The read is a dummy read to flush out the header, but due to collision the controller logs the mbit error reported by the ECC check logic. This results in the early termination of the Read DMA operation by the controller. The issue happens to all the interface speeds(GEN1/2/3) for all the products. Workaround: Disable ECC feature on those platforms. Signed-off-by: Tang Yuantian <yuantian.tang@nxp.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-20ahci: qoriq: added a condition to enable dma coherenceTang Yuantian1-4/+11
Enable DMA coherence in SATA controller on condition that dma-coherent property exists in sata node in DTS. Signed-off-by: Tang Yuantian <yuantian.tang@nxp.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-18Revert "libata: switch to dynamic allocation instead of ata_scsi_rbuf"Tejun Heo1-36/+86
This reverts commit a234f7395c9301a5048cb2daa4c86f15c6f02de8. The commit tried to get rid of the shared global SCSI response buffer. Unfortunately, it added blocking allocation to atomic path. Revert it for now. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Christoph Hellwig <hch@lst.de>
2017-01-15ahci: imx: fix building without hwmon or thermalArnd Bergmann2-1/+3
When CONFIG_HWMON is disabled, we now get a link failure: ERROR: "devm_hwmon_device_register_with_groups" [drivers/ata/ahci_imx.ko] undefined! drivers/ata/ahci_imx.o: In function `imx_ahci_probe': ahci_imx.c:(.text.imx_ahci_probe+0x304): undefined reference to `devm_thermal_zone_of_sensor_register' This makes the code calling into the hwmon subsystem compile-time conditional, and adds a Kconfig dependency to avoid the corner case of having HWMON=m and AHCI_IMX=y, by forcing AHCI_IMX=m in this case. The thermal subsystem already has a check in its header, but that also doesn't cover the THERMAL=m case, so we need a somewhat complex Kconfig expression to handle all cases. Fixes: 54643a83b41a ("ahci: imx: Add imx53 SATA temperature sensor support") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-10ata: add Atari Falcon PATA controller driverBartlomiej Zolnierkiewicz3-0/+194
Add Atari Falcon PATA controller driver. The major difference when compared to legacy IDE's falconide host driver is that we are using polled PIO mode and thus avoiding the need for STDMA locking magic altogether. Tested under ARAnyM emulator. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-10ata: pass queued command to ->sff_data_xfer methodBartlomiej Zolnierkiewicz10-43/+48
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 Zolnierkiewicz1-1/+1
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 Hellwig1-86/+36
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 Hellwig1-21/+1
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 Hellwig1-15/+7
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 Hellwig1-3/+1
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 Hellwig2-7/+7
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 Hellwig1-24/+22
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 Uytterhoeven1-13/+31
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 Shevchenko1-8/+5
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 Heo2-2/+7
2017-01-06ata: sata_mv:- Handle return value of devm_ioremap.Arvind Yadav1-0/+3
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 Moal1-0/+2
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-König1-1/+1
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 Kertesz1-0/+195
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 Heo1-2/+2
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 Kępień1-2/+4
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 Uytterhoeven1-26/+35
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 Uytterhoeven2-2/+1
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 Uytterhoeven1-0/+4
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 Uytterhoeven1-0/+1
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 Uytterhoeven1-0/+1
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 Uytterhoeven1-0/+1
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 Torvalds2-20/+31
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 Manzanares2-20/+31
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 Torvalds7-31/+224
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 Torvalds1-1/+1
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 Stange1-0/+1
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 Hellwig1-0/+39
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-König1-1/+14
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 Hellwig1-7/+0
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 Corbet1-19/+22
Bring in -rc4 patches so I can successfully merge the sound doc changes.
2016-11-09pata: imx: support controller modes up to PIO4Vladimir Zapolskiy1-1/+1
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 Zapolskiy1-1/+46
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>
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