Commit 5a44efff authored by Tejun Heo's avatar Tejun Heo Committed by Jeff Garzik

[PATCH] sata_nv: add hotplug support

Add hotplug support.
Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 39f87582
......@@ -69,7 +69,8 @@ enum {
NV_INT_PORT_SHIFT = 4, /* each port occupies 4 bits */
NV_INT_ALL = 0x0f,
NV_INT_MASK = NV_INT_DEV,
NV_INT_MASK = NV_INT_DEV |
NV_INT_ADDED | NV_INT_REMOVED,
/* INT_CONFIG */
NV_INT_CONFIG = 0x12,
......@@ -324,6 +325,12 @@ static int nv_host_intr(struct ata_port *ap, u8 irq_stat)
struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag);
int handled;
/* freeze if hotplugged */
if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) {
ata_port_freeze(ap);
return 1;
}
/* bail out if not our interrupt */
if (!(irq_stat & NV_INT_DEV))
return 0;
......
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