linux-kernel - [PATCH] mfd: s5m: Fix possible null pointer dereference

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Message-Id: <1326672522-10947-1-git-send-email-jhbird.choi@samsung.com>
Date:	Mon, 16 Jan 2012 09:08:42 +0900
From:	jhbird.choi@...sung.com
To:	linux-kernel@...r.kernel.org
Cc:	Samuel Ortiz <sameo@...ux.intel.com>,
	Sangbeom Kim <sbkim73@...sung.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Jonghwan Choi <jhbird.choi@...sung.com>
Subject: [PATCH] mfd: s5m: Fix possible null pointer dereference

From: Jonghwan Choi <jhbird.choi@...sung.com>

This patch checks for pdata to using it.

Signed-off-by: Jonghwan Choi <jhbird.choi@...sung.com>
---
 drivers/mfd/s5m-core.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/mfd/s5m-core.c b/drivers/mfd/s5m-core.c
index e075c11..caadabe 100644
--- a/drivers/mfd/s5m-core.c
+++ b/drivers/mfd/s5m-core.c
@@ -105,7 +105,7 @@ static int s5m87xx_i2c_probe(struct i2c_client *i2c,
 	s5m87xx->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);
 	i2c_set_clientdata(s5m87xx->rtc, s5m87xx);
 
-	if (pdata->cfg_pmic_irq)
+	if (pdata && pdata->cfg_pmic_irq)
 		pdata->cfg_pmic_irq();
 
 	s5m_irq_init(s5m87xx);
-- 
1.7.1

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