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| author | Martin Peschke <mpeschke@linux.vnet.ibm.com> | 2009-01-30 15:46:23 +0100 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2009-02-10 11:15:17 -0500 |
| commit | 76e3a19d0691bbfcc559ce77ab3004818fab8f22 (patch) | |
| tree | 6013a3ec01ea3f269280740346b98875c35a5478 /drivers/scsi/sg.c | |
| parent | c2f9e49f9bbfa2e111ab1e1628b96b560bae7cec (diff) | |
| download | lwn-76e3a19d0691bbfcc559ce77ab3004818fab8f22.tar.gz lwn-76e3a19d0691bbfcc559ce77ab3004818fab8f22.zip | |
[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>
Diffstat (limited to 'drivers/scsi/sg.c')
| -rw-r--r-- | drivers/scsi/sg.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index 8f0bd3f7a59f..516925d8b570 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); |