From 5a44efff4f8fe8139c0c4166ad5aae5f2fa5bced Mon Sep 17 00:00:00 2001
From: Tejun Heo <htejun@gmail.com>
Date: Sat, 17 Jun 2006 15:49:56 +0900
Subject: [PATCH] [PATCH] sata_nv: add hotplug support
Add hotplug support.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
drivers/scsi/sata_nv.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/sata_nv.c b/drivers/scsi/sata_nv.c
index 2a1bd85404e0..19deaa42fbf0 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 *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;