- 09 Feb, 2015 1 commit
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Tejun Heo authored
Merge branch 'for-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata into for-3.20 09c32aaa ("ahci_xgene: Fix the dma state machine lockup for the ATA_CMD_SMART PIO mode command.") missed 3.19 release. Fold it into for-3.20. Signed-off-by: Tejun Heo <tj@kernel.org>
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- 03 Feb, 2015 4 commits
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Suman Tripathi authored
This patch addresses the issue with ATA_CMD_SMART pio mode command for enumeration and device detection with ATA devices. The X-Gene AHCI controller has an errata in which it cannot clear the BSY bit after the PIO setup FIS. The dma state machine enters CMFatalErrorUpdate state and locks up. It is the same issue as in the commit 2a0bdff6 ("ahci-xgene: fix the dma state machine lockup for the IDENTIFY DEVICE PIO mode command"). For example : without this patch it results in READ DMA command failure as shown below : [ 126.700072] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen [ 126.707089] ata2.00: failed command: READ DMA [ 126.711426] ata2.00: cmd c8/00:08:00:55:57/00:00:00:00:00/e1 tag 1 dma 4096 in [ 126.711426] res 40/00:ff:00:00:00/00:00:00:00:00/40 Emask 0x4 (timeout) [ 126.725956] ata2.00: status: { DRDY } Signed-off-by: Suman Tripathi <stripathi@apm.com> Reported-by: Mark Langsdorf <mlangsdo@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Guenter Roeck authored
of_platform_device_create does not exist if OF_ADDRESS is not configured, so limit its use accordingly. Without this fix, the sparc64:allmodconfig build fails with ERROR: "of_platform_device_create" [drivers/ata/libahci_platform.ko] undefined! Fixes: c7d7ddee ("ata: libahci: Allow using multiple regulators") Cc: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Tejun Heo <tj@kernel.org>
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Markus Elfring authored
The phy_power_off() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Tejun Heo <tj@kernel.org>
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Markus Elfring authored
The pci_dev_put() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Tejun Heo <tj@kernel.org>
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- 28 Jan, 2015 2 commits
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Akinobu Mita authored
The owner module reference of the pata_of_platform's scsi_host is initialized to pata_platform's one, because pata_of_platform driver use a scsi_host_template defined in pata_platform. So this drivers can be unloaded even if the scsi device is being accessed. This fixes it by propagating the scsi_host_template to pata_of_platform driver. The scsi_host_template is passed through a new argument of __pata_platform_probe(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Cc: linux-ide@vger.kernel.org Cc: linux-scsi@vger.kernel.org
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Akinobu Mita authored
The owner module reference of the ahci platform's scsi_host is initialized to libahci_platform's one, because these drivers use a scsi_host_template defined in libahci_platform. So these drivers can be unloaded even if the scsi device is being accessed. This fixes it by pushing the scsi_host_template from libahci_platform to all leaf drivers. The scsi_host_template is passed through a new argument of ahci_platform_init_host(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Cc: linux-ide@vger.kernel.org Cc: linux-scsi@vger.kernel.org
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- 27 Jan, 2015 1 commit
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Tina Ruchandani authored
Function pdc_detect_pll_input_clock uses 'struct timeval' to measure start and end times, used to compute the pll_clock value. 'struct timeval' on 32-bit systems will have its tv_sec field overflow in year 2038 and beyond. This patch uses 'ktime_t' (which uses 64 bits for seconds) for start and end times instead. Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Tina Ruchandani <ruchandani.tina@gmail.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Tejun Heo <tj@kernel.org>
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- 21 Jan, 2015 1 commit
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Thierry Reding authored
Commit c7d7ddee ("ata: libahci: Allow using multiple regulators") releases regulators during ahci_platform_put_resources(). That doesn't work because the function is run as part of the devres machinery. Such resources are torn down in reverse order. Since the array that holds pointers to the regulators is allocated using devres after the device context to which ahci_platform_put_resources() is attached, the memory will be freed before calling ahci_platform_put_resources() and thereby causing a use-after-free error. This commit fixes this by using regular allocations for the array. The memory can then be freed after the regulators have been released. This conserves the advantages of using the managed API. Reported-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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- 19 Jan, 2015 6 commits
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David Jeffery authored
It is possible for ata_sff_flush_pio_task() to set ap->hsm_task_state to HSM_ST_IDLE in between the time __ata_sff_port_intr() checks for HSM_ST_IDLE and before it calls ata_sff_hsm_move() causing ata_sff_hsm_move() to BUG(). This problem is hard to reproduce making this patch hard to verify, but this fix will prevent the race. I have not been able to reproduce the problem, but here is a crash dump from a 2.6.32 kernel. On examining the ata port's state, its hsm_task_state field has a value of HSM_ST_IDLE: crash> struct ata_port.hsm_task_state ffff881c1121c000 hsm_task_state = 0 Normally, this should not be possible as ata_sff_hsm_move() was called from ata_sff_host_intr(), which checks hsm_task_state and won't call ata_sff_hsm_move() if it has a HSM_ST_IDLE value. PID: 11053 TASK: ffff8816e846cae0 CPU: 0 COMMAND: "sshd" #0 [ffff88008ba03960] machine_kexec at ffffffff81038f3b #1 [ffff88008ba039c0] crash_kexec at ffffffff810c5d92 #2 [ffff88008ba03a90] oops_end at ffffffff8152b510 #3 [ffff88008ba03ac0] die at ffffffff81010e0b #4 [ffff88008ba03af0] do_trap at ffffffff8152ad74 #5 [ffff88008ba03b50] do_invalid_op at ffffffff8100cf95 #6 [ffff88008ba03bf0] invalid_op at ffffffff8100bf9b [exception RIP: ata_sff_hsm_move+317] RIP: ffffffff813a77ad RSP: ffff88008ba03ca0 RFLAGS: 00010097 RAX: 0000000000000000 RBX: ffff881c1121dc60 RCX: 0000000000000000 RDX: ffff881c1121dd10 RSI: ffff881c1121dc60 RDI: ffff881c1121c000 RBP: ffff88008ba03d00 R8: 0000000000000000 R9: 000000000000002e R10: 000000000001003f R11: 000000000000009b R12: ffff881c1121c000 R13: 0000000000000000 R14: 0000000000000050 R15: ffff881c1121dd78 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #7 [ffff88008ba03d08] ata_sff_host_intr at ffffffff813a7fbd #8 [ffff88008ba03d38] ata_sff_interrupt at ffffffff813a821e #9 [ffff88008ba03d78] handle_IRQ_event at ffffffff810e6ec0 --- <IRQ stack> --- [exception RIP: pipe_poll+48] RIP: ffffffff81192780 RSP: ffff880f26d459b8 RFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff880f26d459c8 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff881a0539fa80 RBP: ffffffff8100bb8e R8: ffff8803b23324a0 R9: 0000000000000000 R10: ffff880f26d45dd0 R11: 0000000000000008 R12: ffffffff8109b646 R13: ffff880f26d45948 R14: 0000000000000246 R15: 0000000000000246 ORIG_RAX: ffffffffffffff10 CS: 0010 SS: 0018 RIP: 00007f26017435c3 RSP: 00007fffe020c420 RFLAGS: 00000206 RAX: 0000000000000017 RBX: ffffffff8100b072 RCX: 00007fffe020c45c RDX: 00007f2604a3f120 RSI: 00007f2604a3f140 RDI: 000000000000000d RBP: 0000000000000000 R8: 00007fffe020e570 R9: 0101010101010101 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffe020e5f0 R13: 00007fffe020e5f4 R14: 00007f26045f373c R15: 00007fffe020e5e0 ORIG_RAX: 0000000000000017 CS: 0033 SS: 002b Somewhere between the ata_sff_hsm_move() check and the ata_sff_host_intr() check, the value changed. On examining the other cpus to see what else was running, another cpu was running the error handler routines: PID: 326 TASK: ffff881c11014aa0 CPU: 1 COMMAND: "scsi_eh_1" #0 [ffff88008ba27e90] crash_nmi_callback at ffffffff8102fee6 #1 [ffff88008ba27ea0] notifier_call_chain at ffffffff8152d515 #2 [ffff88008ba27ee0] atomic_notifier_call_chain at ffffffff8152d57a #3 [ffff88008ba27ef0] notify_die at ffffffff810a154e #4 [ffff88008ba27f20] do_nmi at ffffffff8152b1db #5 [ffff88008ba27f50] nmi at ffffffff8152aaa0 [exception RIP: _spin_lock_irqsave+47] RIP: ffffffff8152a1ff RSP: ffff881c11a73aa0 RFLAGS: 00000006 RAX: 0000000000000001 RBX: ffff881c1121deb8 RCX: 0000000000000000 RDX: 0000000000000246 RSI: 0000000000000020 RDI: ffff881c122612d8 RBP: ffff881c11a73aa0 R8: ffff881c17083800 R9: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff881c1121c000 R13: 000000000000001f R14: ffff881c1121dd50 R15: ffff881c1121dc60 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0000 --- <NMI exception stack> --- #6 [ffff881c11a73aa0] _spin_lock_irqsave at ffffffff8152a1ff #7 [ffff881c11a73aa8] ata_exec_internal_sg at ffffffff81396fb5 #8 [ffff881c11a73b58] ata_exec_internal at ffffffff81397109 #9 [ffff881c11a73bd8] atapi_eh_request_sense at ffffffff813a34eb Before it tried to acquire a spinlock, ata_exec_internal_sg() called ata_sff_flush_pio_task(). This function will set ap->hsm_task_state to HSM_ST_IDLE, and has no locking around setting this value. ata_sff_flush_pio_task() can then race with the interrupt handler and potentially set HSM_ST_IDLE at a fatal moment, which will trigger a kernel BUG. v2: Fixup comment in ata_sff_flush_pio_task() tj: Further updated comment. Use ap->lock instead of shost lock and use the [un]lock_irq variant instead of the irqsave/restore one. Signed-off-by: David Milburn <dmilburn@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: stable@vger.kernel.org
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Gregory CLEMENT authored
The current implementation of the libahci allows using multiple PHYs but not multiple regulators. This patch adds the support of multiple regulators. Until now it was mandatory to have a PHY under a subnode, now a port subnode can contain either a regulator or a PHY (or both). In order to be able to asociate a port with a regulator the port are now a platform device in the device tree case. There was only one driver which used directly the regulator field of the ahci_host_priv structure. To preserve the bisectability the change in the ahci_imx driver was done in the same patch. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Gregory CLEMENT authored
It is now possible to use a regulator property for each port of the AHCI controller. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Gregory CLEMENT authored
The phy_ functions handle the NULL pointer case, so there is no need to skip them if there is a NULL pointer. Moreover, after the error label there is already no check on the pointer. This patch removes the unnecessary tests and brings some consistency. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Dan Williams authored
Ronny reports: https://bugzilla.kernel.org/show_bug.cgi?id=87101 "Since commit 8a4aeec8 "libata/ahci: accommodate tag ordered controllers" the access to the harddisk on the first SATA-port is failing on its first access. The access to the harddisk on the second port is working normal. When reverting the above commit, access to both harddisks is working fine again." Maintain tag ordered submission as the default, but allow sata_sil24 to continue with the old behavior. Cc: <stable@vger.kernel.org> Cc: Tejun Heo <tj@kernel.org> Reported-by: Ronny Hegewald <Ronny.Hegewald@online.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Mikhail Ulyanov authored
In order to make it possible to restore from hibernation not only in Linux but also in e.g. U-Boot, we have to extend sata_rcar_{suspend|resume}() to {freeze| thaw}() PM methods and implement the restore() PM method. Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com> [Sergei: killed unused variable, changed the order of initializers, modified copyrights, renamed, modified changelog.] Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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- 13 Jan, 2015 2 commits
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Alexandre Belloni authored
Until the driver is corrected to stop using mach/at91isam9_smc.h, it won't compile in a ARCH_MULTIPLATFORM configuration. Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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James Ralston authored
This patch removes a duplicate AHCI-mode SATA Device ID for the Intel Sunrise Point PCH. Signed-off-by: James Ralston <james.d.ralston@intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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- 12 Jan, 2015 1 commit
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Andy Shevchenko authored
For now disable the compilation of the driver on ARM and ARM64. In the future we will fix the DMA handling in that driver and re-enable compilation back. Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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- 11 Jan, 2015 1 commit
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Rickard Strandqvist authored
Remove the function ata_do_simple_cmd() that is not used anywhere. This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: Tejun Heo <tj@kernel.org>
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- 09 Jan, 2015 1 commit
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Gabriele Mazzotta authored
According to the Serial ATA AHCI specification, Device Sleep is an optional feature and as such no errors should be printed if it's missing. Keep informing users, but use dev_info() instead of dev_err(). Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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- 08 Jan, 2015 8 commits
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Martin K. Petersen authored
As defined, the DRAT (Deterministic Read After Trim) and RZAT (Return Zero After Trim) flags in the ATA Command Set are unreliable in the sense that they only define what happens if the device successfully executed the DSM TRIM command. TRIM is only advisory, however, and the device is free to silently ignore all or parts of the request. In practice this renders the DRAT and RZAT flags completely useless and because the results are unpredictable we decided to disable discard in MD for 3.18 to avoid the risk of data corruption. Hardware vendors in the real world obviously need better guarantees than what the standards bodies provide. Unfortuntely those guarantees are encoded in product requirements documents rather than somewhere we can key off of them programatically. So we are compelled to disabling discard_zeroes_data for all devices unless we explicitly have data to support whitelisting them. This patch whitelists SSDs from a few of the main vendors. None of the whitelists are based on written guarantees. They are purely based on empirical evidence collected from internal and external users that have tested or qualified these drives in RAID deployments. The whitelist is only meant as a starting point and is by no means comprehensive: - All intel SSD models except for 510 - Micron M5?0/M600 - Samsung SSDs - Seagate SSDs Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tejun Heo <tj@kernel.org>
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Andy Shevchenko authored
The patch converts ->probe() to use devm_kzalloc that simplifies error path. Note that ata_host_alloc_pinfo() has been using device resources already. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Andy Shevchenko authored
There is no need to print a message about failure of memory allocation. The caller will get an error code and may print the same. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Andy Shevchenko authored
This patch fixes the style of usage of a node pointer. There is no functional change. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Andy Shevchenko authored
There are a lot sparse warnings. Most of them related to __iomem keyword which sometimes absent when it's needed and vise versa. The patch fixes most of the warnings. While at it, remove the redundant sata_dwc_sht.can_queue initialization to ATA_DEF_QUEUE. tj: Added description about ATA_DEF_QUEUE init removal. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Andy Shevchenko authored
To test how the driver could be compiled in the non-native environment let's enable COMPILE_TEST for it. It would be useful for further work. This patch enables COMPILE_TEST for the driver and fixes compilation errors on at least x86 platforms. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Andy Shevchenko authored
Driver core sets it to NULL upon probe failure or release. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Tejun Heo authored
Merge branch 'for-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata into for-3.20 Pull to receive 4aaa7187 ("sata_dwc_460ex: fix resource leak on error path") so that further cleanup patches can be queued on top. Signed-off-by: Tejun Heo <tj@kernel.org>
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- 07 Jan, 2015 2 commits
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Andy Shevchenko authored
DMA mapped IO should be unmapped on the error path in probe() and unconditionally on remove(). Fixes: 62936009 ([libata] Add 460EX on-chip SATA driver, sata_dwc_460ex) Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Nicholas Krause authored
Remove the FIXME comment in atapi_eh_request_sense () asking whether memset of sense buffer is necessary. The buffer may be partially or fully filled by the device. We want it to be cleared. Signed-off-by: Nicholas Krause <xerofoify@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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- 06 Jan, 2015 5 commits
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Bartlomiej Zolnierkiewicz authored
Add myself as the primary maintainer for libata PATA drivers. The merging process would remain unchanged with patches going through Tejun's tree. Cc: Alan Cox <alan@linux.intel.com> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Tejun Heo authored
Make all libata entries start with LIBATA and collect them in one place. Driver specfic ones have the second SATA or PATA prefix. Signed-off-by: Tejun Heo <tj@kernel.org>
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Suman Tripathi authored
Due to H/W errata, the controller is unable to save the PMP field fetched from command header before sending the H2D FIS. When the device returns the PMP port field in the D2H FIS, there is a mismatch and results in command completion failure. The workaround is to write the pmp value to PxFBS.DEV field before issuing any command to PMP. Signed-off-by: Suman Tripathi <stripathi@apm.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Suman Tripathi authored
This patch implements the function xgene_ahci_poll_reg_val to poll PxCI for multiple IDENTIFY DEVICE commands to finish before restarting the DMA engine. Signed-off-by: Suman Tripathi <stripathi@apm.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Tejun Heo authored
Merge branch 'for-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata into for-3.20 Pull to receive the following two ahci_xgene fixes for the planned xgene PMP support patches. 5c0b8e0d ("ahci_xgene: Fix the endianess issue in APM X-Gene SoC AHCI SATA controller driver.") 1102407b ("ahci_xgene: Fix the DMA state machine lockup for the ATA_CMD_PACKET PIO mode command.") Signed-off-by: Tejun Heo <tj@kernel.org>
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- 05 Jan, 2015 3 commits
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Andy Shevchenko authored
The driver sata_dwc_460ex is using this symbol. To build it as a module we have to have the symbol exported. This patch adds EXPORT_SYMBOL_GPL() macro for that. tj: Updated to use EXPORT_SYMBOL_GPL() instead of EXPORT_SYMBOL() as the only known user is an in-tree driver. Suggested by Sergei. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
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Suman Tripathi authored
This patch addresses the issue with ATA_CMD_PACKET pio mode command for enumeration and device detection with ATAPI devices. The X-Gene AHCI controller has an errata in which it cannot clear the BSY bit after the PIO setup FIS. The dma state machine enters CMFatalErrorUpdate state and locks up. Signed-off-by: Suman Tripathi <stripathi@apm.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Suman Tripathi authored
This patch fixes the big endian mode issue with function xgene_ahci_read_id. Signed-off-by: Suman Tripathi <stripathi@apm.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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- 25 Dec, 2014 1 commit
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Nicholas Krause authored
Changes the spelling typos of removeable to removable where ata_id_removeable is defined in ata.h and called in libata-scsi.c respectively. Signed-off-by: Nicholas Krause <xerofoify@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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- 21 Dec, 2014 1 commit
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Linus Torvalds authored
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