Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=21d2c925d3da6aabf9a0b34e95787202379f682a Commit: 21d2c925d3da6aabf9a0b34e95787202379f682a Parent: 3cc3eb1148e4b2dfabf7a1dcf36fd8be1331ca95 Author: Alan Cox <[EMAIL PROTECTED]> AuthorDate: Wed Sep 26 23:02:52 2007 +0100 Committer: Jeff Garzik <[EMAIL PROTECTED]> CommitDate: Fri Oct 12 14:55:42 2007 -0400
pata_atiixp: Audit notes on locking Signed-off-by: Alan Cox <[EMAIL PROTECTED]> Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]> --- drivers/ata/pata_atiixp.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/drivers/ata/pata_atiixp.c b/drivers/ata/pata_atiixp.c index 95ed307..9623f52 100644 --- a/drivers/ata/pata_atiixp.c +++ b/drivers/ata/pata_atiixp.c @@ -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 * 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) @@ -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 * 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) - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html