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Commit 21d2c925 authored by Alan Cox's avatar Alan Cox Committed by Jeff Garzik
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pata_atiixp: Audit notes on locking



Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 3cc3eb11
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+6 −0
Original line number Original line Diff line number Diff line
@@ -173,6 +173,9 @@ static void atiixp_set_dmamode(struct ata_port *ap, struct ata_device *adev)
 *
 *
 *	When DMA begins we need to ensure that the UDMA control
 *	When DMA begins we need to ensure that the UDMA control
 *	register for the channel is correctly set.
 *	register for the channel is correctly set.
 *
 *	Note: The host lock held by the libata layer protects
 *	us from two channels both trying to set DMA bits at once
 */
 */


static void atiixp_bmdma_start(struct ata_queued_cmd *qc)
static void atiixp_bmdma_start(struct ata_queued_cmd *qc)
@@ -199,6 +202,9 @@ static void atiixp_bmdma_start(struct ata_queued_cmd *qc)
 *
 *
 *	DMA has completed. Clear the UDMA flag as the next operations will
 *	DMA has completed. Clear the UDMA flag as the next operations will
 *	be PIO ones not UDMA data transfer.
 *	be PIO ones not UDMA data transfer.
 *
 *	Note: The host lock held by the libata layer protects
 *	us from two channels both trying to set DMA bits at once
 */
 */


static void atiixp_bmdma_stop(struct ata_queued_cmd *qc)
static void atiixp_bmdma_stop(struct ata_queued_cmd *qc)