Resumes the scsi device before accessing it.
Change-Id: I2929af60f2a92c89704a582fcdb285d35b429fde
Signed-off-by: Asutosh Das <asutoshd@xxxxxxxxxxxxxx>
Signed-off-by: Can Guo <cang@xxxxxxxxxxxxxx>
Signed-off-by: Bao D. Nguyen <nguyenb@xxxxxxxxxxxxxx>
---
block/bsg.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/block/bsg.c b/block/bsg.c
index d7bae94..f4c197f 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -306,12 +306,16 @@ static struct bsg_device *bsg_get_device(struct inode *inode, struct file *file)
static int bsg_open(struct inode *inode, struct file *file)
{
struct bsg_device *bd;
+ struct scsi_device *sd;
bd = bsg_get_device(inode, file);
if (IS_ERR(bd))
return PTR_ERR(bd);
+ sd = (struct scsi_device *) bd->queue->queuedata;
+ if (scsi_autopm_get_device(sd))
+ return -EIO;
file->private_data = bd;
return 0;
}
@@ -319,8 +323,12 @@ static int bsg_open(struct inode *inode, struct file *file)
static int bsg_release(struct inode *inode, struct file *file)
{
struct bsg_device *bd = file->private_data;
+ struct scsi_device *sd;
file->private_data = NULL;
+ sd = (struct scsi_device *) bd->queue->queuedata;
+ scsi_autopm_put_device(sd);
+
return bsg_put_device(bd);
}
--
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