openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

V4L/DVB: VIDEO: ivtvfb, remove unneeded NULL test 

Stanse found that in ivtvfb_callback_cleanup and ivtvfb_callback_init
there are unneeded tests for itv being NULL. But itv is initialized
as container_of with non-zero offset in those functions, so it is
never NULL (even if v4l2_dev is). This was found because itv is
dereferenced earlier than the test.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Reviewed-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jiri Slaby 2010-07-19 14:39:34 -03:00 committed by Mauro Carvalho Chehab
parent 6efb870a11
commit 37b58bfe4b
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/media/video/ivtv/ivtvfb.c
View File

@ -1239,7 +1239,7 @@ static int __init ivtvfb_callback_init(struct device *dev, void *p)
struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev);
if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) {
if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
if (ivtvfb_init_card(itv) == 0) {
IVTVFB_INFO("Framebuffer registered on %s\n",
itv->v4l2_dev.name);
@ -1255,7 +1255,7 @@ static int ivtvfb_callback_cleanup(struct device *dev, void *p)
struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev);
struct osd_info *oi = itv->osd_info;
if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) {
if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) {
IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n",
itv->instance);