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| author | Alan Cox | 2006-01-17 21:53:50 +0100 |
|---|---|---|
| committer | Jeff Garzik | 2006-01-18 01:37:45 +0100 |
| commit | a1bd9e68573239320d18823c73eb06d8e56cc9e2 (patch) | |
| tree | 9c9138c9239c586a66fd372549544254d10304e4 /drivers | |
| parent | [PATCH] libata: Fix sector lock to apply to both drives not drive 0 twice (diff) | |
| download | kernel-qcow2-linux-a1bd9e68573239320d18823c73eb06d8e56cc9e2.tar.gz kernel-qcow2-linux-a1bd9e68573239320d18823c73eb06d8e56cc9e2.tar.xz kernel-qcow2-linux-a1bd9e68573239320d18823c73eb06d8e56cc9e2.zip | |
[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')
| -rw-r--r-- | drivers/scsi/libata-core.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index 0a2936a140c8..46c4cdbaee86 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); + } } /** |