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>
git-mirror · Jan 25, 2007 · 61dd08c · 61dd08c
1 parent b2a8bbe
commit 61dd08c
Showing 1 changed file with 2 additions and 1 deletion.
diff --git 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