linux-toradex.git/drivers/ata, branch tegra-11.2.10

libata-sff: fix HSM_ST_ERR handling in __ata_sff_port_intr()

2011-01-07T21:58:48+00:00

commit 687a993339c4f3a63654746230da3aab8bbdbffd upstream.

While separating out BMDMA irq handler from SFF, commit c3b28894
(libata-sff: separate out BMDMA irq handler) incorrectly made
__ata_sff_port_intr() consider an IRQ to be an idle one if the host
state was transitioned to HSM_ST_ERR by ata_bmdma_port_intr().

This makes BMDMA drivers ignore IRQs reporting host bus error which
leads to timeouts instead of triggering EH immediately.  Fix it by
making __ata_sff_port_intr() consider the IRQ to be an idle one iff
the state is HSM_ST_IDLE.  This is equivalent to adding HSM_ST_ERR to
the "break"ing case but less error-prone.

Signed-off-by: Tejun Heo 
Reported-by: Antonio Toma 
Signed-off-by: Jeff Garzik 
Signed-off-by: Greg Kroah-Hartman

libata: fix NULL sdev dereference race in atapi_qc_complete()

2010-12-09T21:32:59+00:00

commit 2a5f07b5ec098edc69e05fdd2f35d3fbb1235723 upstream.

SCSI commands may be issued between __scsi_add_device() and dev->sdev
assignment, so it's unsafe for ata_qc_complete() to dereference
dev->sdev->locked without checking whether it's NULL or not.  Fix it.

Signed-off-by: Tejun Heo 
Signed-off-by: Jeff Garzik 
Signed-off-by: Greg Kroah-Hartman

sata_via: apply magic FIFO fix to vt6420 too

2010-12-09T21:32:38+00:00

commit b1353e4f40f6179ab26a3bb1b2e1fe29ffe534f5 upstream.

vt6420 has the same FIFO overflow problem as vt6421 when combined with
certain devices.  This patch applies the magic fix to vt6420 too.

Signed-off-by: Tejun Heo 
Reported-by: Martin Qvist 
Reported-by: Peter Zijlstra 
Cc: Joseph Chan 
Signed-off-by: Jeff Garzik 
Signed-off-by: Greg Kroah-Hartman

libahci: fix result_tf handling after an ATA PIO data-in command

2010-11-22T19:03:02+00:00

commit 6ad601955315b010a117306b994f2204fae85fdc upstream.

ATA devices don't send D2H Reg FIS after an successful ATA PIO data-in
command.  The host is supposed to take the TF and E_Status of the
preceding PIO Setup FIS.  Update ahci_qc_fill_rtf() such that it takes
TF + E_Status from PIO Setup FIS after a successful ATA PIO data-in
command.

Without this patch, result_tf for such a command is filled with the
content of the previous D2H Reg FIS which belongs to a previous
command, which can make the command incorrectly seen as failed.

* Patch updated to grab the whole TF + E_Status from PIO Setup FIS
  instead of just E_Status as suggested by Robert Hancock.

Signed-off-by: Tejun Heo 
Reported-by: Mark Lord 
Cc: Robert Hancock 
Signed-off-by: Jeff Garzik 
Signed-off-by: Greg Kroah-Hartman

ahci: fix module refcount breakage introduced by libahci split

2010-09-28T19:14:51+00:00

libata depends on scsi_host_template for module reference counting and
sht's should be owned by each low level driver.  During libahci split,
the sht was left with libahci.ko leaving the actual low level drivers
not reference counted.  This made ahci and ahci_platform always
unloadable even while they're being actively used.

Fix it by defining AHCI_SHT() macro in ahci.h and defining a sht for
each low level ahci driver.

stable: only applicable to 2.6.35.

Signed-off-by: Tejun Heo 
Reported-by: Pedro Francisco 
Tested-by: Michael Tokarev 
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik

libata-sff: Reenable Port Multiplier after libata-sff remodeling.

2010-09-10T02:31:55+00:00

Keep track of the link on the which the current request is in progress.
It allows support of links behind port multiplier.

Not all libata-sff is PMP compliant. Code for native BMDMA controller
does not take in accound PMP.

Tested on Marvell 7042 and Sil7526.

Signed-off-by: Gwendal Grignou 
Signed-off-by: Jeff Garzik

libata: skip EH autopsy and recovery during suspend

2010-09-10T02:27:59+00:00

For some mysterious reason, certain hardware reacts badly to usual EH
actions while the system is going for suspend.  As the devices won't
be needed until the system is resumed, ask EH to skip usual autopsy
and recovery and proceed directly to suspend.

Signed-off-by: Tejun Heo 
Tested-by: Stephan Diestelhorst 
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik

ahci: AHCI and RAID mode SATA patch for Intel Patsburg DeviceIDs

2010-09-10T02:27:55+00:00

This patch adds the Intel Patsburg (PCH) SATA AHCI and RAID Controller
DeviceIDs.

Signed-off-by: Seth Heasley 
Signed-off-by: Jeff Garzik

ata_piix: IDE Mode SATA patch for Intel Patsburg DeviceIDs

2010-09-10T02:27:48+00:00

This patch adds the Intel Patsburg (PCH) IDE mode SATA Controller DeviceIDs.

Signed-off-by: Seth Heasley 
Signed-off-by: Jeff Garzik

libata,pata_via: revert ata_wait_idle() removal from ata_sff/via_tf_load()

2010-09-10T02:27:44+00:00

Commit 978c0666 (libata: Remove excess delay in the tf_load path)
removed ata_wait_idle() from ata_sff_tf_load() and via_tf_load().
This caused obscure detection problems in sata_sil.

  https://bugzilla.kernel.org/show_bug.cgi?id=16606

The commit was pure performance optimization.  Revert it for now.

Reported-by: Dieter Plaetinck 
Reported-by: Jan Beulich 
Bisected-by: gianluca 
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik