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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2006-01-17 20:53:50 +0000
committerJeff Garzik <jgarzik@pobox.com>2006-01-17 19:37:45 -0500
commita1bd9e68573239320d18823c73eb06d8e56cc9e2 (patch)
tree9c9138c9239c586a66fd372549544254d10304e4 /drivers/scsi
parent9d824d0710a9e780451533ae4c5cdc5c2ff9062e (diff)
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[PATCH] libata: Code for the IRQ mask flag
Signed-off-by: Alan Cox <alan@redhat.com> Somewhat cleaner in the resync as someone cleaned up the pio xfer users Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/libata-core.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 0a2936a..46c4cdb 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -3097,10 +3097,21 @@ static void ata_pio_data_xfer(struct ata_port *ap, unsigned char *buf,
static void ata_data_xfer(struct ata_port *ap, unsigned char *buf,
unsigned int buflen, int do_write)
{
- if (ap->flags & ATA_FLAG_MMIO)
- ata_mmio_data_xfer(ap, buf, buflen, do_write);
- else
- ata_pio_data_xfer(ap, buf, buflen, do_write);
+ /* Make the crap hardware pay the costs not the good stuff */
+ if (unlikely(ap->flags & ATA_FLAG_IRQ_MASK)) {
+ unsigned long flags;
+ local_irq_save(flags);
+ if (ap->flags & ATA_FLAG_MMIO)
+ ata_mmio_data_xfer(ap, buf, buflen, do_write);
+ else
+ ata_pio_data_xfer(ap, buf, buflen, do_write);
+ local_irq_restore(flags);
+ } else {
+ if (ap->flags & ATA_FLAG_MMIO)
+ ata_mmio_data_xfer(ap, buf, buflen, do_write);
+ else
+ ata_pio_data_xfer(ap, buf, buflen, do_write);
+ }
}
/**