ahci: disable MSI instead of NCQ on Samsung pci-e SSDs on macbooks

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commit 66a7cbc303 upstream.

Samsung pci-e SSDs on macbooks failed miserably on NCQ commands, so
67809f85d3 ("ahci: disable NCQ on Samsung pci-e SSDs on macbooks")
disabled NCQ on them.  It turns out that NCQ is fine as long as MSI is
not used, so let's turn off MSI and leave NCQ on.

Signed-off-by: Tejun Heo <tj@kernel.org>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=60731
Tested-by: <dorin@i51.org>
Tested-by: Imre Kaloz <kaloz@openwrt.org>
Fixes: 67809f85d3 ("ahci: disable NCQ on Samsung pci-e SSDs on macbooks")
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

...

This commit is contained in:

Tejun Heo 2014-10-27 10:22:56 -04:00 • committed by Luis Henriques

parent 892d2eb033

commit d14dfad7b2

1 changed files with 11 additions and 3 deletions

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drivers/ata/ahci.c

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