[PATCH] ide: fix null request pointer for taskfile ioctl
authorTimothy Thelin <Timothy.Thelin@wdc.com>
Sat, 17 Sep 2005 02:28:16 +0000 (19:28 -0700)
committerLinus Torvalds <torvalds@g5.osdl.org>
Sat, 17 Sep 2005 18:50:03 +0000 (11:50 -0700)
When doing ioctl HDIO_DRIVE_TASKFILE, the ide_task_t's request pointer is
never set, but flagged_taskfile and do_rw_taskfile pass it as a parameter
to the prehandler.  The kernel will oops taskfile pio-out commands because
of this (taskfile pio-in doesn't use a prehandler).  This fix sets the
request pointer at the time the request is created to stop this oops.

Signed-off-by: Timothy Thelin <timothy.thelin@wdc.com>
Cc: "Bartlomiej Zolnierkiewicz" <bzolnier@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
drivers/ide/ide-taskfile.c

index d04f62ab5de1991939a07f965c92bf6142370924..ace8edad6e9620ac685dc0e038a89c6e1d0ef546 100644 (file)
@@ -500,6 +500,7 @@ static int ide_diag_taskfile(ide_drive_t *drive, ide_task_t *args, unsigned long
        }
 
        rq.special = args;
+       args->rq = &rq;
        return ide_do_drive_cmd(drive, &rq, ide_wait);
 }