From: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Date: Thu, 22 Mar 2018 13:01:11 +0000 (-0400)
Subject: media: dvbdev: handle ENOMEM error at dvb_module_probe()
X-Git-Tag: v4.17-rc1~143^2~33
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=39adb4e739050dcdb74c3465d261de8de5f224b7;p=linux.git

media: dvbdev: handle ENOMEM error at dvb_module_probe()

If allocation of struct board_info fails, return NULL from
dvb_module_probe().

Fix this warning:
	drivers/media/dvb-core/dvbdev.c:958 dvb_module_probe() error: potential null dereference 'board_info'.  (kzalloc returns null)

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---

diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c
index cf747d753a79..787fe06df217 100644
--- a/drivers/media/dvb-core/dvbdev.c
+++ b/drivers/media/dvb-core/dvbdev.c
@@ -953,6 +953,8 @@ struct i2c_client *dvb_module_probe(const char *module_name,
 	struct i2c_board_info *board_info;
 
 	board_info = kzalloc(sizeof(*board_info), GFP_KERNEL);
+	if (!board_info)
+		return NULL;
 
 	if (name)
 		strlcpy(board_info->type, name, I2C_NAME_SIZE);