Fixes bogus accesses to ports 0-15 with a non DMA capable controller.
This I think should go in for 2.6.20
Arguably it shouldn't be called for PIO commands at all but thats a
matter for Jeff to decide
Signed-off-by: Alan Cox <[EMAIL PROTECTED]>
diff -u --new-file --recursive --exclude-from /usr/src/exclude
linux.vanilla-2.6.20-rc4-mm1/drivers/ata/libata-sff.c
linux-2.6.20-rc4-mm1/drivers/ata/libata-sff.c
--- linux.vanilla-2.6.20-rc4-mm1/drivers/ata/libata-sff.c 2007-01-22
16:26:50.000000000 +0000
+++ linux-2.6.20-rc4-mm1/drivers/ata/libata-sff.c 2007-01-24
17:31:40.000000000 +0000
@@ -827,7 +827,8 @@
*/
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
-
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