linux-stable.git/drivers/ata, branch v4.1.41

ata: sata_mv:- Handle return value of devm_ioremap.

2017-03-06T22:29:13+00:00

[ Upstream commit 064c3db9c564cc5be514ac21fb4aa26cc33db746 ]

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 
Signed-off-by: Tejun Heo 
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin

libata: Fix ATA request sense

2017-03-06T22:29:13+00:00

[ Upstream commit 2dae99558e86894e9e5dbf097477baaa5eb70134 ]

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 
Signed-off-by: Tejun Heo 
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin

libata: apply MAX_SEC_1024 to all CX1-JB*-HP devices

2017-03-06T22:29:12+00:00

[ Upstream commit e0edc8c546463f268d41d064d855bcff994c52fa ]

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 
Reported-by: Marko Koski-Vähälä 
Cc: stable@vger.kernel.org # v3.19+
Signed-off-by: Sasha Levin

libata: LITE-ON CX1-JB256-HP needs lower max_sectors

2016-08-06T16:59:40+00:00

[ Upstream commit 1488a1e3828d60d74c9b802a05e24c0487babe4e ]

Since 34b48db66e08 ("block: remove artifical max_hw_sectors cap"),
max_sectors is no longer limited to BLK_DEF_MAX_SECTORS and LITE-ON
CX1-JB256-HP keeps timing out with higher max_sectors.  Revert it to
the previous value.

Signed-off-by: Tejun Heo 
Reported-by: dgerasimov@gmail.com
Link: https://bugzilla.kernel.org/show_bug.cgi?id=121671
Cc: stable@vger.kernel.org # v3.19+
Fixes: 34b48db66e08 ("block: remove artifical max_hw_sectors cap")
Signed-off-by: Tejun Heo 
Signed-off-by: Sasha Levin

scsi: fix race between simultaneous decrements of ->host_failed

2016-07-11T00:19:54+00:00

[ Upstream commit 72d8c36ec364c82bf1bf0c64dfa1041cfaf139f7 ]

sas_ata_strategy_handler() adds the works of the ata error handler to
system_unbound_wq. This workqueue asynchronously runs work items, so the
ata error handler will be performed concurrently on different CPUs. In
this case, ->host_failed will be decreased simultaneously in
scsi_eh_finish_cmd() on different CPUs, and become abnormal.

It will lead to permanently inequality between ->host_failed and
->host_busy, and scsi error handler thread won't start running. IO
errors after that won't be handled.

Since all scmds must have been handled in the strategy handler, just
remove the decrement in scsi_eh_finish_cmd() and zero ->host_busy after
the strategy handler to fix this race.

Fixes: 50824d6c5657 ("[SCSI] libsas: async ata-eh")
Cc: stable@vger.kernel.org
Signed-off-by: Wei Fang 
Reviewed-by: James Bottomley 
Signed-off-by: Martin K. Petersen 
Signed-off-by: Sasha Levin

ata: ahci-platform: Add ports-implemented DT bindings.

2016-05-17T17:42:36+00:00

[ Upstream commit 17dcc37e3e847bc0e67a5b1ec52471fcc6c18682 ]

On some SOCs PORTS_IMPL register value is never programmed by the
firmware and left at zero value. Which means that no sata ports are
available for software. AHCI driver used to cope up with this by
fabricating the port_map if the PORTS_IMPL register is read zero,
but recent patch broke this workaround as zero value was valid for
NVMe disks.

This patch adds ports-implemented DT bindings as workaround for this issue
in a way that DT can can override the PORTS_IMPL register in cases where
the firmware did not program it already.

Fixes: 566d1827df2e ("libata: disable forced PORTS_IMPL for >= AHCI 1.3")
Cc: stable@vger.kernel.org # v4.5+
Signed-off-by: Srinivas Kandagatla 
Acked-by: Tejun Heo 
Reviewed-by: Andy Gross 
Signed-off-by: Tejun Heo 
Signed-off-by: Sasha Levin

libahci: save port map for forced port map

2016-05-17T17:42:36+00:00

[ Upstream commit 2fd0f46cb1b82587c7ae4a616d69057fb9bd0af7 ]

In usecases where force_port_map is used saved_port_map is never set,
resulting in not programming the PORTS_IMPL register as part of initial
config. This patch fixes this by setting it to port_map even in case
where force_port_map is used, making it more inline with other parts of
the code.

Fixes: 566d1827df2e ("libata: disable forced PORTS_IMPL for >= AHCI 1.3")
Cc: stable@vger.kernel.org # v4.5+
Signed-off-by: Srinivas Kandagatla 
Acked-by: Tejun Heo 
Reviewed-by: Andy Gross 
Signed-off-by: Tejun Heo 
Signed-off-by: Sasha Levin

Adding Intel Lewisburg device IDs for SATA

2016-03-07T17:29:10+00:00

[ Upstream commit f5bdd66c705484b4bc77eb914be15c1b7881fae7 ]

This patch complements the list of device IDs previously
added for lewisburg sata.

Signed-off-by: Alexandra Yates 
Signed-off-by: Tejun Heo 
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin

ahci: add new Intel device IDs

2016-03-07T17:29:05+00:00

[ Upstream commit 56e74338a535cbcc2f2da08b1ea1a92920194364 ]

Adding Intel codename Lewisburg platform device IDs for SATA.

Signed-off-by: Alexandra Yates 
Signed-off-by: Tejun Heo 
Signed-off-by: Sasha Levin

ahci: Order SATA device IDs for codename Lewisburg

2016-03-07T17:29:01+00:00

[ Upstream commit 4d92f0099a06ef0e36c7673f7c090f1a448b2d1b ]

This change was to preserve the ascending order of device IDs.
There was an exception with the first two Lewisburg device IDs to
keep all device IDs of the same kind grouped by code name.

Signed-off-by: Alexandra Yates 
signed-off-by: Tejun Heo 
Signed-off-by: Sasha Levin