From: Julia Lawall <julia@xxxxxxx> dtp is derefenced on the lines above the test !dtp, and so it cannot be NULL at this point. A simplified version of the semantic match that finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r@ expression x,E,E1; identifier f,l; position p1,p2; @@ *x@p1->f = E1; ... when != x = E when != goto l; ( *x@p2 == NULL | *x@p2 != NULL ) // </smpl> Signed-off-by: Julia Lawall <julia@xxxxxxx> --- drivers/block/ataflop.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c index f5e7180..3ff0294 100644 --- a/drivers/block/ataflop.c +++ b/drivers/block/ataflop.c @@ -1627,7 +1627,7 @@ static int fd_ioctl(struct block_device *bdev, fmode_t mode, drive, dtp->blocks, dtp->spt, dtp->stretch); /* sanity check */ - if (!dtp || setprm.track != dtp->blocks/dtp->spt/2 || + if (setprm.track != dtp->blocks/dtp->spt/2 || setprm.head != 2) { redo_fd_request(); return -EINVAL; -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
