Commit Graph

3899 Commits

Author SHA1 Message Date
Lee Jones
9c7d0b2ac4 ata: pata_artop: Repair possible copy/paste issue in 'artop_6210_qc_defer()'s header
Fixes the following W=1 kernel build warning(s):

 drivers/ata/pata_artop.c:278: warning: expecting prototype for artop_6210_qc_defer(). Prototype was for artop6210_qc_defer() instead

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Andre Hedrick <andre@linux-ide.org>
Cc: Thibaut VARENE <varenet@parisc-linux.org>
Cc: Alessandro Zummo <alessandro.zummo@towertech.it>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:30 -07:00
Lee Jones
f18e1faa09 ata: pata_amd: Fix incorrectly named function in the header
Fixes the following W=1 kernel build warning(s):

 drivers/ata/pata_amd.c:331: warning: expecting prototype for nv_probe_init(). Prototype was for nv_pre_reset() instead

Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:30 -07:00
Lee Jones
764e3bc4e9 ata: pata_ali: Supply description for 'ali_20_filter()'s 'mask' param
Fixes the following W=1 kernel build warning(s):

 drivers/ata/pata_ali.c:119: warning: Function parameter or member 'mask' not described in 'ali_20_filter'

Cc: Jens Axboe <axboe@kernel.dk>
Cc: CJ <cjtsai@ali.com.tw>
Cc: Andre Hedrick <andre@linux-ide.org>
Cc: Alan Cox <alan@redhat.com>
Cc: Clear Zhang <Clear.Zhang@ali.com.tw>
Cc: linux-ide@vger.kernel.org
Cc: and cc <htejun@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:30 -07:00
Lee Jones
f3a23c2cdf ata: sata_mv: Fix worthy headers and demote others
Fixes the following W=1 kernel build warning(s):

 drivers/ata/sata_mv.c:1162: warning: Function parameter or member 'ap' not described in 'mv_start_edma'
 drivers/ata/sata_mv.c:1162: warning: Function parameter or member 'port_mmio' not described in 'mv_start_edma'
 drivers/ata/sata_mv.c:1162: warning: Function parameter or member 'protocol' not described in 'mv_start_edma'
 drivers/ata/sata_mv.c:1162: warning: Excess function parameter 'base' description in 'mv_start_edma'
 drivers/ata/sata_mv.c:1535: warning: Function parameter or member 'enable_bmdma' not described in 'mv_bmdma_enable_iie'
 drivers/ata/sata_mv.c:1535: warning: expecting prototype for mv_bmdma_enable(). Prototype was for mv_bmdma_enable_iie() instead
 drivers/ata/sata_mv.c:1930: warning: Function parameter or member 'ap' not described in 'mv_bmdma_stop_ap'
 drivers/ata/sata_mv.c:1930: warning: expecting prototype for mv_bmdma_stop(). Prototype was for mv_bmdma_stop_ap() instead
 drivers/ata/sata_mv.c:2228: warning: Function parameter or member 'ap' not described in 'mv_send_fis'
 drivers/ata/sata_mv.c:3263: warning: Function parameter or member 'hpriv' not described in 'mv6_reset_hc'
 drivers/ata/sata_mv.c:3263: warning: Function parameter or member 'n_hc' not described in 'mv6_reset_hc'
 drivers/ata/sata_mv.c:3541: warning: Function parameter or member 'hpriv' not described in 'soc_is_65n'
 drivers/ata/sata_mv.c:3541: warning: expecting prototype for soc_is_65(). Prototype was for soc_is_65n() instead

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Mark Lord <mlord@pobox.com>
Cc: ALWAYS copy <linux-ide@vger.kernel.org>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:30 -07:00
Lee Jones
6864e78186 ata: ahci_xgene: Fix incorrect naming of 'xgene_ahci_handle_broken_edge_irq()'s 'host' param
Fixes the following W=1 kernel build warning(s):

 drivers/ata/ahci_xgene.c:564: warning: Function parameter or member 'host' not described in 'xgene_ahci_handle_broken_edge_irq'
 drivers/ata/ahci_xgene.c:564: warning: Excess function parameter 'ata_host' description in 'xgene_ahci_handle_broken_edge_irq'

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Loc Ho <lho@apm.com>
Cc: Tuan Phan <tphan@apm.com>
Cc: Suman Tripathi <stripathi@apm.com>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:30 -07:00
Lee Jones
a51746f471 ata: pata_hpt37x: Fix some function misnaming and missing param issues
Fixes the following W=1 kernel build warning(s):

 drivers/ata/pata_hpt37x.c:283: warning: Function parameter or member 'mask' not described in 'hpt370_filter'
 drivers/ata/pata_hpt37x.c:301: warning: Function parameter or member 'mask' not described in 'hpt370a_filter'
 drivers/ata/pata_hpt37x.c:473: warning: expecting prototype for hpt370_bmdma_end(). Prototype was for hpt370_bmdma_stop() instead
 drivers/ata/pata_hpt37x.c:567: warning: expecting prototype for hpt37x_bmdma_end(). Prototype was for hpt37x_bmdma_stop() instead

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Andre Hedrick <andre@linux-ide.org>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:30 -07:00
Lee Jones
d6c2aaaee4 ata: pata_hpt366: Provide missing description for 'hpt366_filter()'s 'mask' param
Fixes the following W=1 kernel build warning(s):

 drivers/ata/pata_hpt366.c:200: warning: Function parameter or member 'mask' not described in 'hpt366_filter'

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Andre Hedrick <andre@linux-ide.org>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:30 -07:00
Lee Jones
73b90681d2 ata: pata_amd: Remove superfluous, add missing and fix broken params
Fixes the following W=1 kernel build warning(s):

 drivers/ata/pata_amd.c:179: warning: Excess function parameter 'adev' description in 'amd_fifo_setup'
 drivers/ata/pata_amd.c:331: warning: Function parameter or member 'link' not described in 'nv_pre_reset'
 drivers/ata/pata_amd.c:331: warning: Function parameter or member 'deadline' not described in 'nv_pre_reset'
 drivers/ata/pata_amd.c:331: warning: expecting prototype for nv_probe_init(). Prototype was for nv_pre_reset() instead

Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:30 -07:00
Lee Jones
5c16c0ce50 ata: pata_artop: Fix a function name and parameter description
Fixes the following W=1 kernel build warning(s):

 drivers/ata/pata_artop.c:278: warning: expecting prototype for artop_6210_qc_defer(). Prototype was for artop6210_qc_defer() instead
 drivers/ata/pata_artop.c:359: warning: Function parameter or member 'id' not described in 'artop_init_one'
 drivers/ata/pata_artop.c:359: warning: Excess function parameter 'ent' description in 'artop_init_one'

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Andre Hedrick <andre@linux-ide.org>
Cc: Thibaut VARENE <varenet@parisc-linux.org>
Cc: Alessandro Zummo <alessandro.zummo@towertech.it>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:30 -07:00
Lee Jones
325fe2088f ata: pata_ali: Repair some misnamed kernel-doc issues
Fixes the following W=1 kernel build warning(s):

 drivers/ata/pata_ali.c:119: warning: Function parameter or member 'mask' not described in 'ali_20_filter'
 drivers/ata/pata_ali.c:119: warning: Excess function parameter 'ap' description in 'ali_20_filter'
 drivers/ata/pata_ali.c:322: warning: Function parameter or member 'qc' not described in 'ali_check_atapi_dma'
 drivers/ata/pata_ali.c:322: warning: Excess function parameter 'adev' description in 'ali_check_atapi_dma'

Cc: Jens Axboe <axboe@kernel.dk>
Cc: CJ <cjtsai@ali.com.tw>
Cc: Andre Hedrick <andre@linux-ide.org>
Cc: Alan Cox <alan@redhat.com>
Cc: Clear Zhang <Clear.Zhang@ali.com.tw>
Cc: linux-ide@vger.kernel.org
Cc: and cc <htejun@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:30 -07:00
Lee Jones
32db9fad69 ata: libata-pmp: Fix misspelling of 'val'
Fixes the following W=1 kernel build warning(s):

 drivers/ata/libata-pmp.c:76: warning: Function parameter or member 'val' not described in 'sata_pmp_write'
 drivers/ata/libata-pmp.c:76: warning: Excess function parameter 'r_val' description in 'sata_pmp_write'

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Tejun Heo <teheo@suse.de>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:30 -07:00
Lee Jones
842a5e584e ata: libata-sata: Fix function names in header comments
Fixes the following W=1 kernel build warning(s):

 drivers/ata/libata-sata.c:1085: warning: expecting prototype for port_alloc(). Prototype was for ata_sas_port_alloc() instead
 drivers/ata/libata-sata.c:1140: warning: expecting prototype for ata_port_stop(). Prototype was for ata_sas_port_stop() instead

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Tejun Heo <htejun@gmail.com>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:30 -07:00
Lee Jones
882184bec5 ata: libata-transport: Fix some potential doc-rot issues
Fixes the following W=1 kernel build warning(s):

 drivers/ata/libata-transport.c:258: warning: Function parameter or member 'ap' not described in 'ata_tport_delete'
 drivers/ata/libata-transport.c:258: warning: Excess function parameter 'port' description in 'ata_tport_delete'
 drivers/ata/libata-transport.c:384: warning: Function parameter or member 'link' not described in 'ata_tlink_delete'
 drivers/ata/libata-transport.c:384: warning: Excess function parameter 'port' description in 'ata_tlink_delete'
 drivers/ata/libata-transport.c:640: warning: Function parameter or member 'ata_dev' not described in 'ata_tdev_delete'
 drivers/ata/libata-transport.c:640: warning: Excess function parameter 'port' description in 'ata_tdev_delete'

Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:30 -07:00
Dinghao Liu
0ed0283f02 sata_dwc_460ex: Fix missing check in sata_dwc_isr
The return value of ata_qc_from_tag() is checked in the whole
kernel except for two calls in sata_dwc_isr(), which may lead
to null-pointer-dereference. Add return value checks to avoid
such case.

Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:29 -07:00
Piyush Mehta
9a9d3abe24 ata: ahci: ceva: Update the driver to support xilinx GT phy
SATA controller used in Xilinx ZynqMP platform uses xilinx GT phy
which has 4 GT lanes and can be used by 4 peripherals at a time.
SATA controller uses 1 GT phy lane among the 4 GT lanes. To configure
the GT lane for the SATA controller, the below sequence is expected.

1. Assert the SATA controller reset.
2. Configure the xilinx GT phy lane for SATA controller (phy_init).
3. De-assert the SATA controller reset.
4. Wait for PLL of the GT lane used by SATA to be locked (phy_power_on).

The ahci_platform_enable_resources() by default does the phy_init()
and phy_power_on() but the default sequence doesn't work with Xilinx
platforms. Because of this reason, updated the driver to support the
new sequence.

Added cevapriv->rst check, for backward compatibility with the older
sequence. If the reset controller is not available, then the SATA
controller will configure with the older sequences.

Signed-off-by: Piyush Mehta <piyush.mehta@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:29 -07:00
Joe Perches
e53d76e61e ata: Avoid comma separated statements
Use semicolons and braces.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-01-31 08:05:46 -07:00
Florian Fainelli
10340f8d7b ata: ahci_brcm: Add back regulators management
While reworking the resources management and departing from using
ahci_platform_enable_resources() which did not allow a proper step
separation like we need, we unfortunately lost the ability to control
AHCI regulators. This broke some Broadcom STB systems that do expect
regulators to be turned on to link up with attached hard drives.

Fixes: c0cdf2ac4b ("ata: ahci_brcm: Fix AHCI resources management")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-01-29 14:08:07 -07:00
Linus Torvalds
8f9a2a196b libata-5.10-2020-10-30
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Merge tag 'libata-5.10-2020-10-30' of git://git.kernel.dk/linux-block

Pull libata fix from Jens Axboe:
 "Single fix for an old regression with sata_nv"

* tag 'libata-5.10-2020-10-30' of git://git.kernel.dk/linux-block:
  ata: sata_nv: Fix retrieving of active qcs
2020-10-30 14:51:01 -07:00
Sascha Hauer
8e4c309f9f ata: sata_nv: Fix retrieving of active qcs
ata_qc_complete_multiple() has to be called with the tags physically
active, that is the hw tag is at bit 0. ap->qc_active has the same tag
at bit ATA_TAG_INTERNAL instead, so call ata_qc_get_active() to fix that
up. This is done in the vein of 8385d756e1 ("libata: Fix retrieving of
active qcs").

Fixes: 28361c4036 ("libata: add extra internal command")
Tested-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-10-28 07:58:09 -06:00
Linus Torvalds
f9c25d9864 Merge branch 'parisc-5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull more parisc updates from Helge Deller:

 - During this merge window O_NONBLOCK was changed to become 000200000,
   but we missed that the syscalls timerfd_create(), signalfd4(),
   eventfd2(), pipe2(), inotify_init1() and userfaultfd() do a strict
   bit-wise check of the flags parameter.

   To provide backward compatibility with existing userspace we
   introduce parisc specific wrappers for those syscalls which filter
   out the old O_NONBLOCK value and replaces it with the new one.

 - Prevent HIL bus driver to get stuck when keyboard or mouse isn't
   attached

 - Improve error return codes when setting rtc time

 - Minor documentation fix in pata_ns87415.c

* 'parisc-5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  ata: pata_ns87415.c: Document support on parisc with superio chip
  parisc: Add wrapper syscalls to fix O_NONBLOCK flag usage
  hil/parisc: Disable HIL driver when it gets stuck
  parisc: Improve error return codes when setting rtc time
2020-10-25 10:59:34 -07:00
Helge Deller
2e34ae02a9 ata: pata_ns87415.c: Document support on parisc with superio chip
I tested this driver on my HP PA-RISC C3000 workstation and it does
work with the built-in TEAC CD-532E-B CD-ROM drive.
So drop the TODO item and adjust the file header.

Signed-off-by: Helge Deller <deller@gmx.de>
2020-10-23 20:23:47 +02:00
Mauro Carvalho Chehab
94bd5719e4 ata: fix some kernel-doc markups
Some functions have different names between their prototypes
and the kernel-doc markup.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-10-23 12:20:32 -06:00
Geert Uytterhoeven
df9c590986 ata: sata_rcar: Fix DMA boundary mask
Before commit 9495b7e92f ("driver core: platform: Initialize
dma_parms for platform devices"), the R-Car SATA device didn't have DMA
parameters.  Hence the DMA boundary mask supplied by its driver was
silently ignored, as __scsi_init_queue() doesn't check the return value
of dma_set_seg_boundary(), and the default value of 0xffffffff was used.

Now the device has gained DMA parameters, the driver-supplied value is
used, and the following warning is printed on Salvator-XS:

    DMA-API: sata_rcar ee300000.sata: mapping sg segment across boundary [start=0x00000000ffffe000] [end=0x00000000ffffefff] [boundary=0x000000001ffffffe]
    WARNING: CPU: 5 PID: 38 at kernel/dma/debug.c:1233 debug_dma_map_sg+0x298/0x300

(the range of start/end values depend on whether IOMMU support is
 enabled or not)

The issue here is that SATA_RCAR_DMA_BOUNDARY doesn't have bit 0 set, so
any typical end value, which is odd, will trigger the check.

Fix this by increasing the DMA boundary value by 1.

This also fixes the following WRITE DMA EXT timeout issue:

    # dd if=/dev/urandom of=/mnt/de1/file1-1024M bs=1M count=1024
    ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
    ata1.00: failed command: WRITE DMA EXT
    ata1.00: cmd 35/00:00:00:e6:0c/00:0a:00:00:00/e0 tag 0 dma 1310720 out
    res 40/00:01:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
    ata1.00: status: { DRDY }

as seen by Shimoda-san since commit 429120f3df ("block: fix
splitting segments on boundary masks").

Fixes: 8bfbeed586 ("sata_rcar: correct 'sata_rcar_sht'")
Fixes: 9495b7e92f ("driver core: platform: Initialize dma_parms for platform devices")
Fixes: 429120f3df ("block: fix splitting segments on boundary masks")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-10-16 09:32:11 -06:00
Pali Rohár
45aefe3d22 ata: ahci: mvebu: Make SATA PHY optional for Armada 3720
Older ATF does not provide SMC call for SATA phy power on functionality and
therefore initialization of ahci_mvebu is failing when older version of ATF
is using. In this case phy_power_on() function returns -EOPNOTSUPP.

This patch adds a new hflag AHCI_HFLAG_IGN_NOTSUPP_POWER_ON which cause
that ahci_platform_enable_phys() would ignore -EOPNOTSUPP errors from
phy_power_on() call.

It fixes initialization of ahci_mvebu on Espressobin boards where is older
Marvell's Arm Trusted Firmware without SMC call for SATA phy power.

This is regression introduced in commit 8e18c8e58d ("arm64: dts: marvell:
armada-3720-espressobin: declare SATA PHY property") where SATA phy was
defined and therefore ahci_platform_enable_phys() on Espressobin started
failing.

Fixes: 8e18c8e58d ("arm64: dts: marvell: armada-3720-espressobin: declare SATA PHY property")
Signed-off-by: Pali Rohár <pali@kernel.org>
Tested-by: Tomasz Maciej Nowak <tmn505@gmail.com>
Cc: <stable@vger.kernel.org> # 5.1+: ea17a0f153: phy: marvell: comphy: Convert internal SMCC firmware return codes to errno
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-10-09 12:47:56 -06:00
Gustavo A. R. Silva
5029a0486e pata_cmd64x: Use fallthrough pseudo-keyword
Replace /* FALL THRU */ comment with the new pseudo-keyword macro
fallthrough[1].

[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-10-02 17:51:30 -06:00
Yuantian Tang
564a7eed3f ahci: qoriq: enable acpi support in qoriq ahci driver
This patch enables ACPI support in qoriq ahci driver.

Signed-off-by: Udit Kumar <udit.kumar@nxp.com>
Signed-off-by: Yuantian Tang <andy.tang@nxp.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-10-02 14:53:37 -06:00
Liu Shixin
6cd32a44f0 sata, highbank: simplify the return expression of ahci_highbank_suspend
Simplify the return expression.

Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-10-02 14:53:11 -06:00
Mika Westerberg
8e85f60575 ahci: Add Intel Rocket Lake PCH-H RAID PCI IDs
Add Intel Rocket Lake PCH-H RAID PCI IDs to the list of supported
controllers.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-10-02 14:51:52 -06:00
Linus Torvalds
d824e0809c libata-5.9-2020-09-04
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Merge tag 'libata-5.9-2020-09-04' of git://git.kernel.dk/linux-block

Pull libata fixes from Jens Axboe:

 - improve Sandisks ATA_HORKAGE on NCQ (Tejun)

 - link printk cleanup (Xu)

* tag 'libata-5.9-2020-09-04' of git://git.kernel.dk/linux-block:
  libata: implement ATA_HORKAGE_MAX_TRIM_128M and apply to Sandisks
  ata: ahci: use ata_link_info() instead of ata_link_printk()
2020-09-04 13:19:19 -07:00
Tejun Heo
3b5455636f libata: implement ATA_HORKAGE_MAX_TRIM_128M and apply to Sandisks
All three generations of Sandisk SSDs lock up hard intermittently.
Experiments showed that disabling NCQ lowered the failure rate significantly
and the kernel has been disabling NCQ for some models of SD7's and 8's,
which is obviously undesirable.

Karthik worked with Sandisk to root cause the hard lockups to trim commands
larger than 128M. This patch implements ATA_HORKAGE_MAX_TRIM_128M which
limits max trim size to 128M and applies it to all three generations of
Sandisk SSDs.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Karthik Shivaram <karthikgs@fb.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-02 11:31:23 -06:00
Gustavo A. R. Silva
df561f6688 treewide: Use fallthrough pseudo-keyword
Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2020-08-23 17:36:59 -05:00
Xu Wang
e276c9bd14 ata: ahci: use ata_link_info() instead of ata_link_printk()
Using ata_link_info() instead of ata_link_printk().

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-16 20:45:36 -07:00
Kees Cook
3f649ab728 treewide: Remove uninitialized_var() usage
Using uninitialized_var() is dangerous as it papers over real bugs[1]
(or can in the future), and suppresses unrelated compiler warnings
(e.g. "unused variable"). If the compiler thinks it is uninitialized,
either simply initialize the variable or make compiler changes.

In preparation for removing[2] the[3] macro[4], remove all remaining
needless uses with the following script:

git grep '\buninitialized_var\b' | cut -d: -f1 | sort -u | \
	xargs perl -pi -e \
		's/\buninitialized_var\(([^\)]+)\)/\1/g;
		 s:\s*/\* (GCC be quiet|to make compiler happy) \*/$::g;'

drivers/video/fbdev/riva/riva_hw.c was manually tweaked to avoid
pathological white-space.

No outstanding warnings were found building allmodconfig with GCC 9.3.0
for x86_64, i386, arm64, arm, powerpc, powerpc64le, s390x, mips, sparc64,
alpha, and m68k.

[1] https://lore.kernel.org/lkml/20200603174714.192027-1-glider@google.com/
[2] https://lore.kernel.org/lkml/CA+55aFw+Vbj0i=1TGqCR5vQkCzWJ0QxK6CernOU6eedsudAixw@mail.gmail.com/
[3] https://lore.kernel.org/lkml/CA+55aFwgbgqhbp1fkxvRKEpzyR5J8n1vKT1VZdz9knmPuXhOeg@mail.gmail.com/
[4] https://lore.kernel.org/lkml/CA+55aFz2500WfbKXAx8s67wrm9=yVJu65TpLgN_ybYNv0VEOKA@mail.gmail.com/

Reviewed-by: Leon Romanovsky <leonro@mellanox.com> # drivers/infiniband and mlx4/mlx5
Acked-by: Jason Gunthorpe <jgg@mellanox.com> # IB
Acked-by: Kalle Valo <kvalo@codeaurora.org> # wireless drivers
Reviewed-by: Chao Yu <yuchao0@huawei.com> # erofs
Signed-off-by: Kees Cook <keescook@chromium.org>
2020-07-16 12:35:15 -07:00
Linus Torvalds
592be758f1 libata-5.8-2020-06-19
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Merge tag 'libata-5.8-2020-06-19' of git://git.kernel.dk/linux-block

Pull libata fixes from Jens Axboe:
 "A few minor changes that should go into this release"

* tag 'libata-5.8-2020-06-19' of git://git.kernel.dk/linux-block:
  libata: Use per port sync for detach
  ata/libata: Fix usage of page address by page_address in ata_scsi_mode_select_xlat function
  sata_rcar: handle pm_runtime_get_sync failure cases
2020-06-19 13:09:40 -07:00
Kai-Heng Feng
b5292111de libata: Use per port sync for detach
Commit 130f4caf14 ("libata: Ensure ata_port probe has completed before
detach") may cause system freeze during suspend.

Using async_synchronize_full() in PM callbacks is wrong, since async
callbacks that are already scheduled may wait for not-yet-scheduled
callbacks, causes a circular dependency.

Instead of using big hammer like async_synchronize_full(), use async
cookie to make sure port probe are synced, without affecting other
scheduled PM callbacks.

Fixes: 130f4caf14 ("libata: Ensure ata_port probe has completed before detach")
Suggested-by: John Garry <john.garry@huawei.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Tested-by: John Garry <john.garry@huawei.com>
BugLink: https://bugs.launchpad.net/bugs/1867983
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-06-18 09:21:40 -06:00
Masahiro Yamada
a7f7f6248d treewide: replace '---help---' in Kconfig files with 'help'
Since commit 84af7a6194 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.

This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.

There are a variety of indentation styles found.

  a) 4 spaces + '---help---'
  b) 7 spaces + '---help---'
  c) 8 spaces + '---help---'
  d) 1 space + 1 tab + '---help---'
  e) 1 tab + '---help---'    (correct indentation)
  f) 1 tab + 1 space + '---help---'
  g) 1 tab + 2 spaces + '---help---'

In order to convert all of them to 1 tab + 'help', I ran the
following commend:

  $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-06-14 01:57:21 +09:00
Ye Bin
f650ef61e0 ata/libata: Fix usage of page address by page_address in ata_scsi_mode_select_xlat function
BUG: KASAN: use-after-free in ata_scsi_mode_select_xlat+0x10bd/0x10f0
drivers/ata/libata-scsi.c:4045
Read of size 1 at addr ffff88803b8cd003 by task syz-executor.6/12621

CPU: 1 PID: 12621 Comm: syz-executor.6 Not tainted 4.19.95 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.10.2-1ubuntu1 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0xac/0xee lib/dump_stack.c:118
print_address_description+0x60/0x223 mm/kasan/report.c:253
kasan_report_error mm/kasan/report.c:351 [inline]
kasan_report mm/kasan/report.c:409 [inline]
kasan_report.cold+0xae/0x2d8 mm/kasan/report.c:393
ata_scsi_mode_select_xlat+0x10bd/0x10f0 drivers/ata/libata-scsi.c:4045
ata_scsi_translate+0x2da/0x680 drivers/ata/libata-scsi.c:2035
__ata_scsi_queuecmd drivers/ata/libata-scsi.c:4360 [inline]
ata_scsi_queuecmd+0x2e4/0x790 drivers/ata/libata-scsi.c:4409
scsi_dispatch_cmd+0x2ee/0x6c0 drivers/scsi/scsi_lib.c:1867
scsi_queue_rq+0xfd7/0x1990 drivers/scsi/scsi_lib.c:2170
blk_mq_dispatch_rq_list+0x1e1/0x19a0 block/blk-mq.c:1186
blk_mq_do_dispatch_sched+0x147/0x3d0 block/blk-mq-sched.c:108
blk_mq_sched_dispatch_requests+0x427/0x680 block/blk-mq-sched.c:204
__blk_mq_run_hw_queue+0xbc/0x200 block/blk-mq.c:1308
__blk_mq_delay_run_hw_queue+0x3c0/0x460 block/blk-mq.c:1376
blk_mq_run_hw_queue+0x152/0x310 block/blk-mq.c:1413
blk_mq_sched_insert_request+0x337/0x6c0 block/blk-mq-sched.c:397
blk_execute_rq_nowait+0x124/0x320 block/blk-exec.c:64
blk_execute_rq+0xc5/0x112 block/blk-exec.c:101
sg_scsi_ioctl+0x3b0/0x6a0 block/scsi_ioctl.c:507
sg_ioctl+0xd37/0x23f0 drivers/scsi/sg.c:1106
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xae6/0x1030 fs/ioctl.c:688
ksys_ioctl+0x76/0xa0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
do_syscall_64+0xa0/0x2e0 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c479
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89
f7 48
89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff
ff 0f
83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb0e9602c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb0e96036d4 RCX: 000000000045c479
RDX: 0000000020000040 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 000000000076bfc0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000046d R14: 00000000004c6e1a R15: 000000000076bfcc

Allocated by task 12577:
set_track mm/kasan/kasan.c:460 [inline]
kasan_kmalloc mm/kasan/kasan.c:553 [inline]
kasan_kmalloc+0xbf/0xe0 mm/kasan/kasan.c:531
__kmalloc+0xf3/0x1e0 mm/slub.c:3749
kmalloc include/linux/slab.h:520 [inline]
load_elf_phdrs+0x118/0x1b0 fs/binfmt_elf.c:441
load_elf_binary+0x2de/0x4610 fs/binfmt_elf.c:737
search_binary_handler fs/exec.c:1654 [inline]
search_binary_handler+0x15c/0x4e0 fs/exec.c:1632
exec_binprm fs/exec.c:1696 [inline]
__do_execve_file.isra.0+0xf52/0x1a90 fs/exec.c:1820
do_execveat_common fs/exec.c:1866 [inline]
do_execve fs/exec.c:1883 [inline]
__do_sys_execve fs/exec.c:1964 [inline]
__se_sys_execve fs/exec.c:1959 [inline]
__x64_sys_execve+0x8a/0xb0 fs/exec.c:1959
do_syscall_64+0xa0/0x2e0 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x44/0xa9

Freed by task 12577:
set_track mm/kasan/kasan.c:460 [inline]
__kasan_slab_free+0x129/0x170 mm/kasan/kasan.c:521
slab_free_hook mm/slub.c:1370 [inline]
slab_free_freelist_hook mm/slub.c:1397 [inline]
slab_free mm/slub.c:2952 [inline]
kfree+0x8b/0x1a0 mm/slub.c:3904
load_elf_binary+0x1be7/0x4610 fs/binfmt_elf.c:1118
search_binary_handler fs/exec.c:1654 [inline]
search_binary_handler+0x15c/0x4e0 fs/exec.c:1632
exec_binprm fs/exec.c:1696 [inline]
__do_execve_file.isra.0+0xf52/0x1a90 fs/exec.c:1820
do_execveat_common fs/exec.c:1866 [inline]
do_execve fs/exec.c:1883 [inline]
__do_sys_execve fs/exec.c:1964 [inline]
__se_sys_execve fs/exec.c:1959 [inline]
__x64_sys_execve+0x8a/0xb0 fs/exec.c:1959
do_syscall_64+0xa0/0x2e0 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x44/0xa9

The buggy address belongs to the object at ffff88803b8ccf00
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 259 bytes inside of
512-byte region [ffff88803b8ccf00, ffff88803b8cd100)
The buggy address belongs to the page:
page:ffffea0000ee3300 count:1 mapcount:0 mapping:ffff88806cc03080
index:0xffff88803b8cc780 compound_mapcount: 0
flags: 0x100000000008100(slab|head)
raw: 0100000000008100 ffffea0001104080 0000000200000002 ffff88806cc03080
raw: ffff88803b8cc780 00000000800c000b 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
ffff88803b8ccf00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88803b8ccf80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88803b8cd000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88803b8cd080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88803b8cd100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

You can refer to "https://www.lkml.org/lkml/2019/1/17/474" reproduce
this error.

The exception code is "bd_len = p[3];", "p" value is ffff88803b8cd000
which belongs to the cache kmalloc-512 of size 512. The "page_address(sg_page(scsi_sglist(scmd)))"
maybe from sg_scsi_ioctl function "buffer" which allocated by kzalloc, so "buffer"
may not page aligned.
This also looks completely buggy on highmem systems and really needs to use a
kmap_atomic.      --Christoph Hellwig
To address above bugs, Paolo Bonzini advise to simpler to just make a char array
of size CACHE_MPAGE_LEN+8+8+4-2(or just 64 to make it easy), use sg_copy_to_buffer
to copy from the sglist into the buffer, and workthere.

Signed-off-by: Ye Bin <yebin10@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-06-04 21:15:27 -06:00
Navid Emamdoost
eea1238867 sata_rcar: handle pm_runtime_get_sync failure cases
Calling pm_runtime_get_sync increments the counter even in case of
failure, causing incorrect ref count. Call pm_runtime_put if
pm_runtime_get_sync fails.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-06-04 21:14:50 -06:00
Linus Torvalds
750a02ab8d for-5.8/block-2020-06-01
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Merge tag 'for-5.8/block-2020-06-01' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:
 "Core block changes that have been queued up for this release:

   - Remove dead blk-throttle and blk-wbt code (Guoqing)

   - Include pid in blktrace note traces (Jan)

   - Don't spew I/O errors on wouldblock termination (me)

   - Zone append addition (Johannes, Keith, Damien)

   - IO accounting improvements (Konstantin, Christoph)

   - blk-mq hardware map update improvements (Ming)

   - Scheduler dispatch improvement (Salman)

   - Inline block encryption support (Satya)

   - Request map fixes and improvements (Weiping)

   - blk-iocost tweaks (Tejun)

   - Fix for timeout failing with error injection (Keith)

   - Queue re-run fixes (Douglas)

   - CPU hotplug improvements (Christoph)

   - Queue entry/exit improvements (Christoph)

   - Move DMA drain handling to the few drivers that use it (Christoph)

   - Partition handling cleanups (Christoph)"

* tag 'for-5.8/block-2020-06-01' of git://git.kernel.dk/linux-block: (127 commits)
  block: mark bio_wouldblock_error() bio with BIO_QUIET
  blk-wbt: rename __wbt_update_limits to wbt_update_limits
  blk-wbt: remove wbt_update_limits
  blk-throttle: remove tg_drain_bios
  blk-throttle: remove blk_throtl_drain
  null_blk: force complete for timeout request
  blk-mq: drain I/O when all CPUs in a hctx are offline
  blk-mq: add blk_mq_all_tag_iter
  blk-mq: open code __blk_mq_alloc_request in blk_mq_alloc_request_hctx
  blk-mq: use BLK_MQ_NO_TAG in more places
  blk-mq: rename BLK_MQ_TAG_FAIL to BLK_MQ_NO_TAG
  blk-mq: move more request initialization to blk_mq_rq_ctx_init
  blk-mq: simplify the blk_mq_get_request calling convention
  blk-mq: remove the bio argument to ->prepare_request
  nvme: force complete cancelled requests
  blk-mq: blk-mq: provide forced completion method
  block: fix a warning when blkdev.h is included for !CONFIG_BLOCK builds
  block: blk-crypto-fallback: remove redundant initialization of variable err
  block: reduce part_stat_lock() scope
  block: use __this_cpu_add() instead of access by smp_processor_id()
  ...
2020-06-02 15:29:19 -07:00
Linus Torvalds
b23c4771ff A fair amount of stuff this time around, dominated by yet another massive
set from Mauro toward the completion of the RST conversion.  I *really*
 hope we are getting close to the end of this.  Meanwhile, those patches
 reach pretty far afield to update document references around the tree;
 there should be no actual code changes there.  There will be, alas, more of
 the usual trivial merge conflicts.
 
 Beyond that we have more translations, improvements to the sphinx
 scripting, a number of additions to the sysctl documentation, and lots of
 fixes.
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Merge tag 'docs-5.8' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "A fair amount of stuff this time around, dominated by yet another
  massive set from Mauro toward the completion of the RST conversion. I
  *really* hope we are getting close to the end of this. Meanwhile,
  those patches reach pretty far afield to update document references
  around the tree; there should be no actual code changes there. There
  will be, alas, more of the usual trivial merge conflicts.

  Beyond that we have more translations, improvements to the sphinx
  scripting, a number of additions to the sysctl documentation, and lots
  of fixes"

* tag 'docs-5.8' of git://git.lwn.net/linux: (130 commits)
  Documentation: fixes to the maintainer-entry-profile template
  zswap: docs/vm: Fix typo accept_threshold_percent in zswap.rst
  tracing: Fix events.rst section numbering
  docs: acpi: fix old http link and improve document format
  docs: filesystems: add info about efivars content
  Documentation: LSM: Correct the basic LSM description
  mailmap: change email for Ricardo Ribalda
  docs: sysctl/kernel: document unaligned controls
  Documentation: admin-guide: update bug-hunting.rst
  docs: sysctl/kernel: document ngroups_max
  nvdimm: fixes to maintainter-entry-profile
  Documentation/features: Correct RISC-V kprobes support entry
  Documentation/features: Refresh the arch support status files
  Revert "docs: sysctl/kernel: document ngroups_max"
  docs: move locking-specific documents to locking/
  docs: move digsig docs to the security book
  docs: move the kref doc into the core-api book
  docs: add IRQ documentation at the core-api book
  docs: debugging-via-ohci1394.txt: add it to the core-api book
  docs: fix references for ipmi.rst file
  ...
2020-06-01 15:45:27 -07:00
John Oldman
89e7c85026 ata: sata_inic162x fix a spelling issue
Fixed a warning message spelling issue.

Signed-off-by: John Oldman <john.oldman@polehill.co.uk>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-04-23 09:59:30 -06:00
Christoph Hellwig
bdf8710d69 block: move dma_pad handling from blk_rq_map_sg into the callers
There are only two callers of blk_rq_map_sg/__blk_rq_map_sg that set
the dma_pad value in the queue.  Move the handling into those callers
instead of burdening the common code, and move the ->extra_len field
from struct request to struct scsi_cmnd.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-04-22 10:47:39 -06:00
Christoph Hellwig
cc97923a5b block: move dma drain handling to scsi
Don't burden the common block code with with specifics of the libata DMA
draining mechanism.  Instead move most of the code to the scsi midlayer.

That also means the nr_phys_segments adjustments in the blk-mq fast path
can go away entirely, given that SCSI never looks at nr_phys_segments
after mapping the request to a scatterlist.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-04-22 10:47:35 -06:00
Mauro Carvalho Chehab
a31a6997e6 ata: libata-core: fix a doc warning
The docs toolchain doesn't recognise this pattern:

	@link->[hw_]sata_spd_limit

As it can't really process it. So, instead, let's mark it with
a literal block markup:

	``link->[hw_]sata_spd_limit``

in order to get rid of the following warning:

	./drivers/ata/libata-core.c:5974: WARNING: Unknown target name: "hw".

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/9a21444df75c46095c4b1839d2061d19c9addcff.1586881715.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-04-20 15:45:41 -06:00
Kai-Heng Feng
1f2ef049cb ahci: Add Intel Comet Lake PCH-U PCI ID
Add Intel Comet Lake PCH-U PCI ID to the list of supported controllers.

Set default SATA LPM so the SoC can enter S0ix.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-04-16 10:26:52 -06:00
Jian-Hong Pan
7667e63c8a ahci: Add Intel Comet Lake PCH RAID PCI ID
Intel Comet Lake should use the default LPM policy for mobile chipsets.
So, add the PCI ID to the driver list of supported devices.

Signed-off-by: Jian-Hong Pan <jian-hong@endlessm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-04-09 09:31:38 -06:00
Kai-Heng Feng
894fba7f43 ata: ahci: Add sysfs attribute to show remapped NVMe device count
Add a new sysfs attribute to show how many NVMe devices are remapped.

Userspace like distro installer can use this info to ask user to change
the BIOS setting.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-04-07 16:07:38 -06:00
Colin Ian King
3aadcf8382 ata: ahci-imx: remove redundant assignment to ret
The variable ret is being initialized with a value that is never read
and it is being updated later with a new value.  The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-04-07 14:49:45 -06:00
Kai-Heng Feng
8305f72f95 libata: Return correct status in sata_pmp_eh_recover_pm() when ATA_DFLAG_DETACH is set
During system resume from suspend, this can be observed on ASM1062 PMP
controller:

ata10.01: SATA link down (SStatus 0 SControl 330)
ata10.02: hard resetting link
ata10.02: SATA link down (SStatus 0 SControl 330)
ata10.00: configured for UDMA/133
Kernel panic - not syncing: stack-protector: Kernel
 in: sata_pmp_eh_recover+0xa2b/0xa40

CPU: 2 PID: 230 Comm: scsi_eh_9 Tainted: P OE
#49-Ubuntu
Hardware name: System manufacturer System Product
 1001 12/10/2017
Call Trace:
dump_stack+0x63/0x8b
panic+0xe4/0x244
? sata_pmp_eh_recover+0xa2b/0xa40
__stack_chk_fail+0x19/0x20
sata_pmp_eh_recover+0xa2b/0xa40
? ahci_do_softreset+0x260/0x260 [libahci]
? ahci_do_hardreset+0x140/0x140 [libahci]
? ata_phys_link_offline+0x60/0x60
? ahci_stop_engine+0xc0/0xc0 [libahci]
sata_pmp_error_handler+0x22/0x30
ahci_error_handler+0x45/0x80 [libahci]
ata_scsi_port_error_handler+0x29b/0x770
? ata_scsi_cmd_error_handler+0x101/0x140
ata_scsi_error+0x95/0xd0
? scsi_try_target_reset+0x90/0x90
scsi_error_handler+0xd0/0x5b0
kthread+0x121/0x140
? scsi_eh_get_sense+0x200/0x200
? kthread_create_worker_on_cpu+0x70/0x70
ret_from_fork+0x22/0x40
Kernel Offset: 0xcc00000 from 0xffffffff81000000
(relocation range: 0xffffffff80000000-0xffffffffbfffffff)

Since sata_pmp_eh_recover_pmp() doens't set rc when ATA_DFLAG_DETACH is
set, sata_pmp_eh_recover() continues to run. During retry it triggers
the stack protector.

Set correct rc in sata_pmp_eh_recover_pmp() to let sata_pmp_eh_recover()
jump to pmp_fail directly.

BugLink: https://bugs.launchpad.net/bugs/1821434
Cc: stable@vger.kernel.org
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-04-07 14:45:15 -06:00
Bartlomiej Zolnierkiewicz
bf89b0bf30 ata: make "libata.force" kernel parameter optional
Add ATA_FORCE config option (visible only if EXPERT config
option is enabled) and make "libata.force" kernel parameter
optional.

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
w/ CONFIG_ATA_FORCE=y:
  31983     572      40   32595    7f53 drivers/ata/libata-core.o
w/ CONFIG_ATA_FROCE=n:
  28958     316      32   29306    727a drivers/ata/libata-core.o

Suggested-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-26 10:28:20 -06:00