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authorAlan <alan@lxorguk.ukuu.org.uk>2007-01-25 15:09:05 +0000
committerJeff Garzik <jeff@garzik.org>2007-01-25 18:27:16 -0500
commit61dd08c6c8d2b4ede530e43c01fa72f789ef65b1 (patch)
treeed50d46e0b8f089cf97aba54aa3e38ed3c1af57b /drivers/ata/libata-sff.c
parentb2a8bbe67d73631c71492fd60b757fc50a87f182 (diff)
libata-sff: Don't call bmdma_stop on non DMA capable controllers
Fixes bogus accesses to ports 0-15 with a non DMA capable controller. This I think should go in for 2.6.20 Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata/libata-sff.c')
-rw-r--r--drivers/ata/libata-sff.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 114fa81deb8..942aeba2940 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -827,7 +827,8 @@ void ata_bmdma_error_handler(struct ata_port *ap)
*/
void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc)
{
- ata_bmdma_stop(qc);
+ if (qc->ap->ioaddr.bmdma_addr)
+ ata_bmdma_stop(qc);
}
#ifdef CONFIG_PCI