Commit 5bb2d617 authored by Kai Mäkisara's avatar Kai Mäkisara Committed by Martin K. Petersen
Browse files

scsi: st: Don't modify unknown block number in MTIOCGET 



Struct mtget field mt_blkno -1 means it is unknown. Don't add anything to
it.

Signed-off-by: default avatarKai Mäkisara <Kai.Makisara@kolumbus.fi>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=219419#c14
Link: https://lore.kernel.org/r/20241106095723.63254-2-Kai.Makisara@kolumbus.fi


Reviewed-by: default avatarJohn Meneghini <jmeneghi@redhat.com>
Tested-by: default avatarJohn Meneghini <jmeneghi@redhat.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 9852d85e

drivers/scsi/st.c

+1 −1
Original line number Diff line number Diff line
@@ -3756,7 +3756,7 @@ static long st_ioctl(struct file *file, unsigned int cmd_in, unsigned long arg) 
		    ((STp->density << MT_ST_DENSITY_SHIFT) & MT_ST_DENSITY_MASK);

		mt_status.mt_blkno = STps->drv_block;

		mt_status.mt_fileno = STps->drv_file;

		if (STp->block_size != 0) {

		if (STp->block_size != 0 && mt_status.mt_blkno >= 0) {

			if (STps->rw == ST_WRITING)

				mt_status.mt_blkno +=

				    (STp->buffer)->buffer_bytes / STp->block_size;