[PATCH] sata_nv: fix ATAPI in ADMA mode

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The attached patch against 2.6.19-rc6-mm1 fixes some problems in sata_nv
with ATAPI devices on controllers running in ADMA mode. Some of the
logic in the nv_adma_bmdma_* functions was inverted causing a bunch of
warnings and caused those functions not to work properly. Also, when an
ATAPI device is connected, we need to use the legacy DMA engine. The
code now disables the PCI configuration register bits for ADMA so that
this works, and ensures that no ATAPI DMA commands go through until this
is done.

Fixes Bugzilla http://bugzilla.kernel.org/show_bug.cgi?id=7538

Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

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Robert Hancock 2006-11-26 14:20:19 -06:00 • committed by Jeff Garzik

parent 099156db55

commit 2dec7555e6

1 changed files with 188 additions and 130 deletions

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318

drivers/ata/sata_nv.c

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