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(parent: fcf1bf1) | patch
libata: fix ata_scsi_change_queue_depth()
authorTejun Heo <htejun@gmail.com>
Tue, 20 Feb 2007 14:31:22 +0000 (23:31 +0900)
committerJeff Garzik <jeff@garzik.org>
Wed, 21 Feb 2007 09:58:19 +0000 (04:58 -0500)
commitc3c70c443c2ef1fce31f201a93780c884b903993
treecfb23ec2831ad4f10c87f6362573db9eb6a33cbdtree | snapshot
parentfcf1bf1584647f9fd864c193fee81840c4c5ce41commit | diff
libata: fix ata_scsi_change_queue_depth()

Fix ata_scsi_change_queue_depth() such that...

* NCQ on/off is exactly determined using the same logic as the issue path.

* queue depth is adjusted to 1 if NCQ is not enabled.

* -EINVAL is returned if requested action is ignored due to limitations.

This fixes the bug which allows queue depth to be increased on
blacklisted NCQ hosts/devices.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
drivers/ata/libata-scsi.c diff | blob | history
DSM-G600 Linux 2.6