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authorMartin Peschke <mpeschke@linux.vnet.ibm.com>2009-01-30 15:46:23 +0100
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2009-02-10 11:15:17 -0500
commit76e3a19d0691bbfcc559ce77ab3004818fab8f22 (patch)
tree6013a3ec01ea3f269280740346b98875c35a5478
parentc2f9e49f9bbfa2e111ab1e1628b96b560bae7cec (diff)
[SCSI] sg: fix device number in blktrace data
Hi, we have run into an issue with blktrace being started for sg devices. Please apply. Thanks, Martin From: Martin Peschke <mpeschke@linux.vnet.ibm.com> The device number denoting a generic SCSI devices (sg) in a blktrace trace is broken; major and minor are always 0. It looks like sdp->device->sdev_gendev.devt is not initialized properly. The fix below uses other data to make up a valid device number, similar to the way an sg device number is generated for sysfs output. Reported-by: Stefan Raspl <raspl@linux.vnet.ibm.com> Signed-off-by: Martin Peschke <mpeschke@linux.vnet.ibm.com> Acked-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
-rw-r--r--drivers/scsi/sg.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 8f0bd3f7a59..516925d8b57 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -1078,7 +1078,7 @@ sg_ioctl(struct inode *inode, struct file *filp,
case BLKTRACESETUP:
return blk_trace_setup(sdp->device->request_queue,
sdp->disk->disk_name,
- sdp->device->sdev_gendev.devt,
+ MKDEV(SCSI_GENERIC_MAJOR, sdp->index),
(char *)arg);
case BLKTRACESTART:
return blk_trace_startstop(sdp->device->request_queue, 1);