From: Roel Kluin <roel.kluin@gmail.com>
Date: Sat, 19 Sep 2009 00:03:34 +0000 (-0300)
Subject: V4L/DVB (13018): kzalloc failure ignored in au8522_probe()
X-Git-Tag: firefly_0821_release~12898^2~11
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=40d2951758d788a0375d27062caf9cc75de735a9;p=firefly-linux-kernel-4.4.55.git

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>
---

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;