[PATCH 6/6] sata_nv: add hotplug support

[Tejun Heo <htejun@gmail.com>]

Add hotplug support.

Signed-off-by: Tejun Heo <htejun@gmail.com>

---

 drivers/scsi/sata_nv.c |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

9e6fcaab7c4457835c1417c45b702945c754bd4f
diff --git a/drivers/scsi/sata_nv.c b/drivers/scsi/sata_nv.c
index 2a1bd85..19deaa4 100644
--- a/drivers/scsi/sata_nv.c
+++ b/drivers/scsi/sata_nv.c
@@ -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 
 	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;
-- 
1.3.2