[libata] Improve timeout handling
On a timeout call a device specific handler early in the recovery so that
we can complete and process successful commands which timed out due to IRQ
loss or the like rather more elegantly.
[Revised to exclude the timeout handling on a few devices that inherit from
SFF but are not SFF enough to use the default timeout handler]
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/ata/sata_vsc.c b/drivers/ata/sata_vsc.c
index ef211f3..ed70bd2 100644
--- a/drivers/ata/sata_vsc.c
+++ b/drivers/ata/sata_vsc.c
@@ -308,6 +308,9 @@
static struct ata_port_operations vsc_sata_ops = {
.inherits = &ata_bmdma_port_ops,
+ /* The IRQ handling is not quite standard SFF behaviour so we
+ cannot use the default lost interrupt handler */
+ .lost_interrupt = ATA_OP_NULL,
.sff_tf_load = vsc_sata_tf_load,
.sff_tf_read = vsc_sata_tf_read,
.freeze = vsc_freeze,