From: Steven Toth Date: Fri, 7 Sep 2007 01:48:35 +0000 (-0300) Subject: V4L/DVB (6188): Avoid a NULL pointer dereference during mpeg_open() X-Git-Tag: v2.6.23-rc7~48^2~1 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=48200baeab95fd39a7f4c4f3536c7142a64ac335;p=linux-2.6 V4L/DVB (6188): Avoid a NULL pointer dereference during mpeg_open() Bug: With a hardware encoder board installed as cx88[1] and a non-encoder boards installed as cx88[0], an OOPS is generated during cx8802_get_device() called from mpeg_open(). Signed-off-by: Steven Toth Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/video/cx88/cx88-mpeg.c b/drivers/media/video/cx88/cx88-mpeg.c index 317a2a3f9c..da7a6b591a 100644 --- a/drivers/media/video/cx88/cx88-mpeg.c +++ b/drivers/media/video/cx88/cx88-mpeg.c @@ -580,7 +580,7 @@ struct cx8802_dev * cx8802_get_device(struct inode *inode) list_for_each(list,&cx8802_devlist) { h = list_entry(list, struct cx8802_dev, devlist); - if (h->mpeg_dev->minor == minor) + if (h->mpeg_dev && h->mpeg_dev->minor == minor) return h; }