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authorTejun Heo <htejun@gmail.com>2006-06-17 02:49:56 -0400
committerJeff Garzik <jeff@garzik.org>2006-06-20 04:59:22 -0400
commit5a44efff4f8fe8139c0c4166ad5aae5f2fa5bced (patch)
treefe424beaa46ad3d59b28ef79b1da4a1f748e2ac8 /drivers/scsi/sata_nv.c
parent39f8758259868a01ecad29b4379661dd3f21881f (diff)
[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>
Diffstat (limited to 'drivers/scsi/sata_nv.c')
-rw-r--r--drivers/scsi/sata_nv.c9
1 files changed, 8 insertions, 1 deletions
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 {
69 NV_INT_PORT_SHIFT = 4, /* each port occupies 4 bits */ 69 NV_INT_PORT_SHIFT = 4, /* each port occupies 4 bits */
70 70
71 NV_INT_ALL = 0x0f, 71 NV_INT_ALL = 0x0f,
72 NV_INT_MASK = NV_INT_DEV, 72 NV_INT_MASK = NV_INT_DEV |
73 NV_INT_ADDED | NV_INT_REMOVED,
73 74
74 /* INT_CONFIG */ 75 /* INT_CONFIG */
75 NV_INT_CONFIG = 0x12, 76 NV_INT_CONFIG = 0x12,
@@ -324,6 +325,12 @@ static int nv_host_intr(struct ata_port *ap, u8 irq_stat)
324 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag); 325 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag);
325 int handled; 326 int handled;
326 327
328 /* freeze if hotplugged */
329 if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) {
330 ata_port_freeze(ap);
331 return 1;
332 }
333
327 /* bail out if not our interrupt */ 334 /* bail out if not our interrupt */
328 if (!(irq_stat & NV_INT_DEV)) 335 if (!(irq_stat & NV_INT_DEV))
329 return 0; 336 return 0;