media: omap2: omapfb: fix ifnullfree.cocci warnings

From: kbuild test robot <redacted>

drivers/video/fbdev/omap2/omapfb/dss/core.c:141:2-26: WARNING: NULL check before some freeing functions is not needed.

 NULL check before some freeing functions is not needed.

 Based on checkpatch warning
 "kfree(NULL) is safe this check is probably not required"
 and kfreeaddr.cocci by Julia Lawall.

Generated by: scripts/coccinelle/free/ifnullfree.cocci

Fixes: 7378f1149884 ("media: omap2: omapfb: allow building it with COMPILE_TEST")
Signed-off-by: kbuild test robot <redacted>
---

Please take the patch only if it's a positive warning. Thanks!

 core.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/video/fbdev/omap2/omapfb/dss/core.c
+++ b/drivers/video/fbdev/omap2/omapfb/dss/core.c

@@ -137,8 +137,7 @@ static int dss_initialize_debugfs(void)
 
 static void dss_uninitialize_debugfs(void)
 {
-	if (dss_debugfs_dir)
-		debugfs_remove_recursive(dss_debugfs_dir);
+	debugfs_remove_recursive(dss_debugfs_dir);
 }
 
 int dss_debugfs_create_file(const char *name, void (*write)(struct seq_file *))

On Thursday, July 26, 2018 01:57:00 AM kbuild test robot wrote:

From: kbuild test robot <redacted>

drivers/video/fbdev/omap2/omapfb/dss/core.c:141:2-26: WARNING: NULL check before some freeing functions is not needed.

 NULL check before some freeing functions is not needed.

 Based on checkpatch warning
 "kfree(NULL) is safe this check is probably not required"
 and kfreeaddr.cocci by Julia Lawall.

Generated by: scripts/coccinelle/free/ifnullfree.cocci

Fixes: 7378f1149884 ("media: omap2: omapfb: allow building it with COMPILE_TEST")
Signed-off-by: kbuild test robot <redacted>

Patch queued for 4.19 (w/ "media"->"fbdev" fixup in the patch title), thanks.

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics