extcon: cros-ec: Fix a potential NULL pointer dereference

Return -ENOMEM in case of memory allocation failure. This avoids a NULL
pointer dereference.

Fixes: c69831666109 ("extcon: cros-ec: Add extcon-cros-ec driver to support display out")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

diff --git a/drivers/extcon/extcon-usbc-cros-ec.c b/drivers/extcon/extcon-usbc-cros-ec.c
index e759ed4777352d38273c15c859aeee9a2124cdcb..598956f1dcae61a6928f965a996836afcee1cc20 100644 (file)
--- a/drivers/extcon/extcon-usbc-cros-ec.c
+++ b/drivers/extcon/extcon-usbc-cros-ec.c
@@ -68,6 +68,8 @@ static int cros_ec_pd_command(struct cros_ec_extcon_info *info,
        int ret;
 
        msg = kzalloc(sizeof(*msg) + max(outsize, insize), GFP_KERNEL);
+       if (!msg)
+               return -ENOMEM;
 
        msg->version = version;
        msg->command = command;