linux-stable.git/drivers/ata, branch linux-3.10.y Linux kernel stable tree libata: array underflow in ata_find_dev() 2017-11-01T21:12:44+00:00 Dan Carpenter dan.carpenter@oracle.com 2017-07-19T10:06:41+00:00 7e20e7b9910eede5c21c7badcadb4d3830f8d69d commit 59a5e266c3f5c1567508888dd61a45b86daed0fa upstream. My static checker complains that "devno" can be negative, meaning that we read before the start of the loop. I've looked at the code, and I think the warning is right. This come from /proc so it's root only or it would be quite a quite a serious bug. The call tree looks like this: proc_scsi_write() <- gets id and channel from simple_strtoul() -> scsi_add_single_device() <- calls shost->transportt->user_scan() -> ata_scsi_user_scan() -> ata_find_dev() Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: stable@vger.kernel.org # all versions at this point Signed-off-by: Willy Tarreau <w@1wt.eu> 
commit 59a5e266c3f5c1567508888dd61a45b86daed0fa upstream.

My static checker complains that "devno" can be negative, meaning that
we read before the start of the loop.  I've looked at the code, and I
think the warning is right.  This come from /proc so it's root only or
it would be quite a quite a serious bug.  The call tree looks like this:

proc_scsi_write() <- gets id and channel from simple_strtoul()
-> scsi_add_single_device() <- calls shost->transportt->user_scan()
   -> ata_scsi_user_scan()
      -> ata_find_dev()

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org # all versions at this point
Signed-off-by: Willy Tarreau <w@1wt.eu>
ata: sata_mv:- Handle return value of devm_ioremap. 2017-06-20T12:04:18+00:00 Arvind Yadav arvind.yadav.cs@gmail.com 2016-12-12T17:43:27+00:00 bb3d39c70fe12ab44c4dff3785c3ff322adde851 commit 064c3db9c564cc5be514ac21fb4aa26cc33db746 upstream. 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> Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Willy Tarreau <w@1wt.eu> 
commit 064c3db9c564cc5be514ac21fb4aa26cc33db746 upstream.

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>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Willy Tarreau <w@1wt.eu>
scsi: fix race between simultaneous decrements of ->host_failed 2016-08-27T09:40:28+00:00 Wei Fang fangwei1@huawei.com 2016-06-07T06:53:56+00:00 ec032b74164fab3dabeceb37362f2a58227c51b8 commit 72d8c36ec364c82bf1bf0c64dfa1041cfaf139f7 upstream. 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 <fangwei1@huawei.com> Reviewed-by: James Bottomley <jejb@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Willy Tarreau <w@1wt.eu> 
commit 72d8c36ec364c82bf1bf0c64dfa1041cfaf139f7 upstream.

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 <fangwei1@huawei.com>
Reviewed-by: James Bottomley <jejb@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
libata: fix HDIO_GET_32BIT ioctl 2016-03-09T23:31:54+00:00 Arnd Bergmann arnd@arndb.de 2016-02-11T13:16:27+00:00 45eb9d85bdfc2f6737644386c209640b3c6d2165 commit 287e6611ab1eac76c2c5ebf6e345e04c80ca9c61 upstream. As reported by Soohoon Lee, the HDIO_GET_32BIT ioctl does not work correctly in compat mode with libata. I have investigated the issue further and found multiple problems that all appeared with the same commit that originally introduced HDIO_GET_32BIT handling in libata back in linux-2.6.8 and presumably also linux-2.4, as the code uses "copy_to_user(arg, &val, 1)" to copy a 'long' variable containing either 0 or 1 to user space. The problems with this are: * On big-endian machines, this will always write a zero because it stores the wrong byte into user space. * In compat mode, the upper three bytes of the variable are updated by the compat_hdio_ioctl() function, but they now contain uninitialized stack data. * The hdparm tool calling this ioctl uses a 'static long' variable to store the result. This means at least the upper bytes are initialized to zero, but calling another ioctl like HDIO_GET_MULTCOUNT would fill them with data that remains stale when the low byte is overwritten. Fortunately libata doesn't implement any of the affected ioctl commands, so this would only happen when we query both an IDE and an ATA device in the same command such as "hdparm -N -c /dev/hda /dev/sda" * The libata code for unknown reasons started using ATA_IOC_GET_IO32 and ATA_IOC_SET_IO32 as aliases for HDIO_GET_32BIT and HDIO_SET_32BIT, while the ioctl commands that were added later use the normal HDIO_* names. This is harmless but rather confusing. This addresses all four issues by changing the code to use put_user() on an 'unsigned long' variable in HDIO_GET_32BIT, like the IDE subsystem does, and by clarifying the names of the ioctl commands. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reported-by: Soohoon Lee <Soohoon.Lee@f5.com> Tested-by: Soohoon Lee <Soohoon.Lee@f5.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 287e6611ab1eac76c2c5ebf6e345e04c80ca9c61 upstream.

As reported by Soohoon Lee, the HDIO_GET_32BIT ioctl does not
work correctly in compat mode with libata.

I have investigated the issue further and found multiple problems
that all appeared with the same commit that originally introduced
HDIO_GET_32BIT handling in libata back in linux-2.6.8 and presumably
also linux-2.4, as the code uses "copy_to_user(arg, &val, 1)" to copy
a 'long' variable containing either 0 or 1 to user space.

The problems with this are:

* On big-endian machines, this will always write a zero because it
  stores the wrong byte into user space.

* In compat mode, the upper three bytes of the variable are updated
  by the compat_hdio_ioctl() function, but they now contain
  uninitialized stack data.

* The hdparm tool calling this ioctl uses a 'static long' variable
  to store the result. This means at least the upper bytes are
  initialized to zero, but calling another ioctl like HDIO_GET_MULTCOUNT
  would fill them with data that remains stale when the low byte
  is overwritten. Fortunately libata doesn't implement any of the
  affected ioctl commands, so this would only happen when we query
  both an IDE and an ATA device in the same command such as
  "hdparm -N -c /dev/hda /dev/sda"

* The libata code for unknown reasons started using ATA_IOC_GET_IO32
  and ATA_IOC_SET_IO32 as aliases for HDIO_GET_32BIT and HDIO_SET_32BIT,
  while the ioctl commands that were added later use the normal
  HDIO_* names. This is harmless but rather confusing.

This addresses all four issues by changing the code to use put_user()
on an 'unsigned long' variable in HDIO_GET_32BIT, like the IDE subsystem
does, and by clarifying the names of the ioctl commands.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Soohoon Lee <Soohoon.Lee@f5.com>
Tested-by: Soohoon Lee <Soohoon.Lee@f5.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
libata: fix sff host state machine locking while polling 2016-03-03T23:06:24+00:00 Tejun Heo tj@kernel.org 2016-02-01T16:33:21+00:00 43a349917d77250e1fb7dbcb44e50a80b8cab026 commit 8eee1d3ed5b6fc8e14389567c9a6f53f82bb7224 upstream. The bulk of ATA host state machine is implemented by ata_sff_hsm_move(). The function is called from either the interrupt handler or, if polling, a work item. Unlike from the interrupt path, the polling path calls the function without holding the host lock and ata_sff_hsm_move() selectively grabs the lock. This is completely broken. If an IRQ triggers while polling is in progress, the two can easily race and end up accessing the hardware and updating state machine state at the same time. This can put the state machine in an illegal state and lead to a crash like the following. kernel BUG at drivers/ata/libata-sff.c:1302! invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN Modules linked in: CPU: 1 PID: 10679 Comm: syz-executor Not tainted 4.5.0-rc1+ #300 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 task: ffff88002bd00000 ti: ffff88002e048000 task.ti: ffff88002e048000 RIP: 0010:[<ffffffff83a83409>] [<ffffffff83a83409>] ata_sff_hsm_move+0x619/0x1c60 ... Call Trace: <IRQ> [<ffffffff83a84c31>] __ata_sff_port_intr+0x1e1/0x3a0 drivers/ata/libata-sff.c:1584 [<ffffffff83a85611>] ata_bmdma_port_intr+0x71/0x400 drivers/ata/libata-sff.c:2877 [< inline >] __ata_sff_interrupt drivers/ata/libata-sff.c:1629 [<ffffffff83a85bf3>] ata_bmdma_interrupt+0x253/0x580 drivers/ata/libata-sff.c:2902 [<ffffffff81479f98>] handle_irq_event_percpu+0x108/0x7e0 kernel/irq/handle.c:157 [<ffffffff8147a717>] handle_irq_event+0xa7/0x140 kernel/irq/handle.c:205 [<ffffffff81484573>] handle_edge_irq+0x1e3/0x8d0 kernel/irq/chip.c:623 [< inline >] generic_handle_irq_desc include/linux/irqdesc.h:146 [<ffffffff811a92bc>] handle_irq+0x10c/0x2a0 arch/x86/kernel/irq_64.c:78 [<ffffffff811a7e4d>] do_IRQ+0x7d/0x1a0 arch/x86/kernel/irq.c:240 [<ffffffff86653d4c>] common_interrupt+0x8c/0x8c arch/x86/entry/entry_64.S:520 <EOI> [< inline >] rcu_lock_acquire include/linux/rcupdate.h:490 [< inline >] rcu_read_lock include/linux/rcupdate.h:874 [<ffffffff8164b4a1>] filemap_map_pages+0x131/0xba0 mm/filemap.c:2145 [< inline >] do_fault_around mm/memory.c:2943 [< inline >] do_read_fault mm/memory.c:2962 [< inline >] do_fault mm/memory.c:3133 [< inline >] handle_pte_fault mm/memory.c:3308 [< inline >] __handle_mm_fault mm/memory.c:3418 [<ffffffff816efb16>] handle_mm_fault+0x2516/0x49a0 mm/memory.c:3447 [<ffffffff8127dc16>] __do_page_fault+0x376/0x960 arch/x86/mm/fault.c:1238 [<ffffffff8127e358>] trace_do_page_fault+0xe8/0x420 arch/x86/mm/fault.c:1331 [<ffffffff8126f514>] do_async_page_fault+0x14/0xd0 arch/x86/kernel/kvm.c:264 [<ffffffff86655578>] async_page_fault+0x28/0x30 arch/x86/entry/entry_64.S:986 Fix it by ensuring that the polling path is holding the host lock before entering ata_sff_hsm_move() so that all hardware accesses and state updates are performed under the host lock. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-and-tested-by: Dmitry Vyukov <dvyukov@google.com> Link: http://lkml.kernel.org/g/CACT4Y+b_JsOxJu2EZyEf+mOXORc_zid5V1-pLZSroJVxyWdSpw@mail.gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 8eee1d3ed5b6fc8e14389567c9a6f53f82bb7224 upstream.

The bulk of ATA host state machine is implemented by
ata_sff_hsm_move().  The function is called from either the interrupt
handler or, if polling, a work item.  Unlike from the interrupt path,
the polling path calls the function without holding the host lock and
ata_sff_hsm_move() selectively grabs the lock.

This is completely broken.  If an IRQ triggers while polling is in
progress, the two can easily race and end up accessing the hardware
and updating state machine state at the same time.  This can put the
state machine in an illegal state and lead to a crash like the
following.

  kernel BUG at drivers/ata/libata-sff.c:1302!
  invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN
  Modules linked in:
  CPU: 1 PID: 10679 Comm: syz-executor Not tainted 4.5.0-rc1+ #300
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
  task: ffff88002bd00000 ti: ffff88002e048000 task.ti: ffff88002e048000
  RIP: 0010:[<ffffffff83a83409>]  [<ffffffff83a83409>] ata_sff_hsm_move+0x619/0x1c60
  ...
  Call Trace:
   <IRQ>
   [<ffffffff83a84c31>] __ata_sff_port_intr+0x1e1/0x3a0 drivers/ata/libata-sff.c:1584
   [<ffffffff83a85611>] ata_bmdma_port_intr+0x71/0x400 drivers/ata/libata-sff.c:2877
   [<     inline     >] __ata_sff_interrupt drivers/ata/libata-sff.c:1629
   [<ffffffff83a85bf3>] ata_bmdma_interrupt+0x253/0x580 drivers/ata/libata-sff.c:2902
   [<ffffffff81479f98>] handle_irq_event_percpu+0x108/0x7e0 kernel/irq/handle.c:157
   [<ffffffff8147a717>] handle_irq_event+0xa7/0x140 kernel/irq/handle.c:205
   [<ffffffff81484573>] handle_edge_irq+0x1e3/0x8d0 kernel/irq/chip.c:623
   [<     inline     >] generic_handle_irq_desc include/linux/irqdesc.h:146
   [<ffffffff811a92bc>] handle_irq+0x10c/0x2a0 arch/x86/kernel/irq_64.c:78
   [<ffffffff811a7e4d>] do_IRQ+0x7d/0x1a0 arch/x86/kernel/irq.c:240
   [<ffffffff86653d4c>] common_interrupt+0x8c/0x8c arch/x86/entry/entry_64.S:520
   <EOI>
   [<     inline     >] rcu_lock_acquire include/linux/rcupdate.h:490
   [<     inline     >] rcu_read_lock include/linux/rcupdate.h:874
   [<ffffffff8164b4a1>] filemap_map_pages+0x131/0xba0 mm/filemap.c:2145
   [<     inline     >] do_fault_around mm/memory.c:2943
   [<     inline     >] do_read_fault mm/memory.c:2962
   [<     inline     >] do_fault mm/memory.c:3133
   [<     inline     >] handle_pte_fault mm/memory.c:3308
   [<     inline     >] __handle_mm_fault mm/memory.c:3418
   [<ffffffff816efb16>] handle_mm_fault+0x2516/0x49a0 mm/memory.c:3447
   [<ffffffff8127dc16>] __do_page_fault+0x376/0x960 arch/x86/mm/fault.c:1238
   [<ffffffff8127e358>] trace_do_page_fault+0xe8/0x420 arch/x86/mm/fault.c:1331
   [<ffffffff8126f514>] do_async_page_fault+0x14/0xd0 arch/x86/kernel/kvm.c:264
   [<ffffffff86655578>] async_page_fault+0x28/0x30 arch/x86/entry/entry_64.S:986

Fix it by ensuring that the polling path is holding the host lock
before entering ata_sff_hsm_move() so that all hardware accesses and
state updates are performed under the host lock.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-and-tested-by: Dmitry Vyukov <dvyukov@google.com>
Link: http://lkml.kernel.org/g/CACT4Y+b_JsOxJu2EZyEf+mOXORc_zid5V1-pLZSroJVxyWdSpw@mail.gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
sata_sil: disable trim 2016-03-03T23:06:22+00:00 Mikulas Patocka mpatocka@redhat.com 2015-11-26T17:00:59+00:00 d6eab6f74f15e0f38d875d523f74e6bc55492ba7 commit d98f1cd0a3b70ea91f1dfda3ac36c3b2e1a4d5e2 upstream. When I connect an Intel SSD to SATA SIL controller (PCI ID 1095:3114), any TRIM command results in I/O errors being reported in the log. There is other similar error reported with TRIM and the SIL controller: https://bugs.centos.org/view.php?id=5880 Apparently the controller doesn't support TRIM commands. This patch disables TRIM support on the SATA SIL controller. ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata7.00: BMDMA2 stat 0x50001 ata7.00: failed command: DATA SET MANAGEMENT ata7.00: cmd 06/01:01:00:00:00/00:00:00:00:00/a0 tag 0 dma 512 out res 51/04:01:00:00:00/00:00:00:00:00/a0 Emask 0x1 (device error) ata7.00: status: { DRDY ERR } ata7.00: error: { ABRT } ata7.00: device reported invalid CHS sector 0 sd 8:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE sd 8:0:0:0: [sdb] tag#0 Sense Key : Illegal Request [current] [descriptor] sd 8:0:0:0: [sdb] tag#0 Add. Sense: Unaligned write command sd 8:0:0:0: [sdb] tag#0 CDB: Write same(16) 93 08 00 00 00 00 00 21 95 88 00 20 00 00 00 00 blk_update_request: I/O error, dev sdb, sector 2200968 Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit d98f1cd0a3b70ea91f1dfda3ac36c3b2e1a4d5e2 upstream.

When I connect an Intel SSD to SATA SIL controller (PCI ID 1095:3114), any
TRIM command results in I/O errors being reported in the log. There is
other similar error reported with TRIM and the SIL controller:
https://bugs.centos.org/view.php?id=5880

Apparently the controller doesn't support TRIM commands. This patch
disables TRIM support on the SATA SIL controller.

ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
ata7.00: BMDMA2 stat 0x50001
ata7.00: failed command: DATA SET MANAGEMENT
ata7.00: cmd 06/01:01:00:00:00/00:00:00:00:00/a0 tag 0 dma 512 out
         res 51/04:01:00:00:00/00:00:00:00:00/a0 Emask 0x1 (device error)
ata7.00: status: { DRDY ERR }
ata7.00: error: { ABRT }
ata7.00: device reported invalid CHS sector 0
sd 8:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 8:0:0:0: [sdb] tag#0 Sense Key : Illegal Request [current] [descriptor]
sd 8:0:0:0: [sdb] tag#0 Add. Sense: Unaligned write command
sd 8:0:0:0: [sdb] tag#0 CDB: Write same(16) 93 08 00 00 00 00 00 21 95 88 00 20 00 00 00 00
blk_update_request: I/O error, dev sdb, sector 2200968

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ahci: Intel DNV device IDs SATA 2016-02-19T22:22:41+00:00 Alexandra Yates alexandra.yates@linux.intel.com 2016-02-05T23:27:49+00:00 71eec872a94409c9a595b2a02a5d9eb8c9d335c5 commit 342decff2b846b46fa61eb5ee40986fab79a9a32 upstream. Adding Intel codename DNV platform device IDs for SATA. Signed-off-by: Alexandra Yates <alexandra.yates@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 342decff2b846b46fa61eb5ee40986fab79a9a32 upstream.

Adding Intel codename DNV platform device IDs for SATA.

Signed-off-by: Alexandra Yates <alexandra.yates@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
libata: disable forced PORTS_IMPL for >= AHCI 1.3 2016-02-19T22:22:41+00:00 Tejun Heo tj@kernel.org 2016-01-15T20:13:05+00:00 f6c2bfd8a8829cc0cddefe6f952b7436b875cd18 commit 566d1827df2ef0cbe921d3d6946ac3007b1a6938 upstream. Some early controllers incorrectly reported zero ports in PORTS_IMPL register and the ahci driver fabricates PORTS_IMPL from the number of ports in those cases. This hasn't mattered but with the new nvme controllers there are cases where zero PORTS_IMPL is valid and should be honored. Disable the workaround for >= AHCI 1.3. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Andy Lutomirski <luto@amacapital.net> Link: http://lkml.kernel.org/g/CALCETrU7yMvXEDhjAUShoHEhDwifJGapdw--BKxsP0jmjKGmRw@mail.gmail.com Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 566d1827df2ef0cbe921d3d6946ac3007b1a6938 upstream.

Some early controllers incorrectly reported zero ports in PORTS_IMPL
register and the ahci driver fabricates PORTS_IMPL from the number of
ports in those cases.  This hasn't mattered but with the new nvme
controllers there are cases where zero PORTS_IMPL is valid and should
be honored.

Disable the workaround for >= AHCI 1.3.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Andy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/g/CALCETrU7yMvXEDhjAUShoHEhDwifJGapdw--BKxsP0jmjKGmRw@mail.gmail.com
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
AHCI: Fix softreset failed issue of Port Multiplier 2016-02-19T22:22:41+00:00 Xiangliang Yu Xiangliang.Yu@amd.com 2015-11-26T12:27:02+00:00 d2b76ee2681e369a0ab38fdd7df9ea3ea94c2bd2 commit 023113d24ef9e1d2b44cb2446872b17e2b01d8b1 upstream. Current code doesn't update port value of Port Multiplier(PM) when sending FIS of softreset to device, command will fail if FBS is enabled. There are two ways to fix the issue: the first is to disable FBS before sending softreset command to PM device and the second is to update port value of PM when sending command. For the first way, i can't find any related rule in AHCI Spec. The second way can avoid disabling FBS and has better performance. Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 023113d24ef9e1d2b44cb2446872b17e2b01d8b1 upstream.

Current code doesn't update port value of Port Multiplier(PM) when
sending FIS of softreset to device, command will fail if FBS is
enabled.

There are two ways to fix the issue: the first is to disable FBS
before sending softreset command to PM device and the second is
to update port value of PM when sending command.

For the first way, i can't find any related rule in AHCI Spec. The
second way can avoid disabling FBS and has better performance.

Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ata: pmp: add quirk for Marvell 4140 SATA PMP 2015-08-10T19:20:31+00:00 Lior Amsalem alior@marvell.com 2015-06-30T14:09:49+00:00 357dafbca56c66e47d3a76f036c47d8b756fe17b commit 945b47441d83d2392ac9f984e0267ad521f24268 upstream. This commit adds the necessary quirk to make the Marvell 4140 SATA PMP work properly. This PMP doesn't like SRST on port number 4 (the host port) so this commit marks this port as not supporting SRST. Signed-off-by: Lior Amsalem <alior@marvell.com> Reviewed-by: Nadav Haklai <nadavh@marvell.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 945b47441d83d2392ac9f984e0267ad521f24268 upstream.

This commit adds the necessary quirk to make the Marvell 4140 SATA PMP
work properly. This PMP doesn't like SRST on port number 4 (the host
port) so this commit marks this port as not supporting SRST.

Signed-off-by: Lior Amsalem <alior@marvell.com>
Reviewed-by: Nadav Haklai <nadavh@marvell.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>