]> git.baikalelectronics.ru Git - kernel.git/commit
sata_sil24: don't use NCQ if marvell 4140 PMP is attached
authorTejun Heo <htejun@gmail.com>
Sun, 18 May 2008 16:15:13 +0000 (01:15 +0900)
committerJeff Garzik <jgarzik@redhat.com>
Mon, 19 May 2008 21:51:48 +0000 (17:51 -0400)
commit61c4b384c1ba3a72f64c844dc4e63689dfa37548
tree20a9f5bd6ae04853aba2ab2f68d94134c6bea450
parentabc25be99f8cd8acdd7837b251a8c9699820fe31
sata_sil24: don't use NCQ if marvell 4140 PMP is attached

When 4140 PMP is attached to sil24, NCQ commands to fan out port 1 and
2 (0 based) often stall if commands are in progress to other ports.
I've tried a number of things but can't tell what's going on.  It
never happens w/ ahci and reportedly sata_mv which can issue NCQ
commands to multiple devices simultaneously like sil24 does.

Disable NCQ for devices behind 4140 PMP for the time being.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Mark Lord <liml@rtr.ca>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
drivers/ata/sata_sil24.c