V4L/DVB (13018): kzalloc failure ignored in au8522_probe()

Prevent NULL dereference if kzalloc() fails.

Cc: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/au8522_decoder.c b/drivers/media/dvb/frontends/au8522_decoder.c
index 9e9a75576a1d..74981ee923c8 100644
--- a/drivers/media/dvb/frontends/au8522_decoder.c
+++ b/drivers/media/dvb/frontends/au8522_decoder.c
@@ -792,6 +792,11 @@ static int au8522_probe(struct i2c_client *client,
         }
 
         demod_config = kzalloc(sizeof(struct au8522_config), GFP_KERNEL);
+        if (demod_config == NULL) {
+                if (instance == 1)
+                        kfree(state);
+                return -ENOMEM;
+        }
         demod_config->demod_address = 0x8e >> 1;
 
         state->config = demod_config;