[PATCH] extcon: cros-ec: Fix a potential NULL pointer dereference

From: Christophe JAILLET
Date: Mon Aug 07 2017 - 02:30:43 EST


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@xxxxxxxxxx>
---
drivers/extcon/extcon-usbc-cros-ec.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/extcon/extcon-usbc-cros-ec.c b/drivers/extcon/extcon-usbc-cros-ec.c
index e759ed477735..598956f1dcae 100644
--- 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;
--
2.11.0