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| author | Tejun Heo <tj@kernel.org> | 2010-10-15 11:00:08 +0200 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2010-10-21 21:17:00 -0400 |
| commit | 6ad601955315b010a117306b994f2204fae85fdc (patch) | |
| tree | d10eadcbb064c463a413823b9cccd018ae1a94e8 /drivers/ata/Makefile | |
| parent | f7a437dda2b5c104a897405cbff678aa1eb37897 (diff) | |
| download | lwn-6ad601955315b010a117306b994f2204fae85fdc.tar.gz lwn-6ad601955315b010a117306b994f2204fae85fdc.zip | |
libahci: fix result_tf handling after an ATA PIO data-in command
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 <tj@kernel.org>
Reported-by: Mark Lord <kernel@teksavvy.com>
Cc: Robert Hancock <hancockrwd@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/Makefile')
0 files changed, 0 insertions, 0 deletions