From: Maurus Cuelenaere <mcuelenaere@gmail.com>
Date: Fri, 22 Jan 2010 22:29:16 +0000 (+0100)
Subject: ARM: SAMSUNG: Fix null pointer dereference in ADC driver
X-Git-Tag: firefly_0821_release~9833^2~2609^2~3^2~47
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f6b56704f78b2667fc8f61d2f398931fbc032b62;p=firefly-linux-kernel-4.4.55.git

ARM: SAMSUNG: Fix null pointer dereference in ADC driver

ARM: SAMSUNG: Fix null pointer dereference in ADC driver

Use struct adc_device instead of relying on client (which could be
NULL) when checking for SoC type.

Signed-off-by: Maurus Cuelenaere <mcuelenaere@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
---

diff --git a/arch/arm/plat-samsung/adc.c b/arch/arm/plat-samsung/adc.c
index 120b7902fc2f..c7659b7378b1 100644
--- a/arch/arm/plat-samsung/adc.c
+++ b/arch/arm/plat-samsung/adc.c
@@ -295,7 +295,7 @@ static irqreturn_t s3c_adc_irq(int irq, void *pw)
 	}
 
 exit:
-	if (platform_get_device_id(client->pdev)->driver_data == TYPE_S3C64XX) {
+	if (platform_get_device_id(adc->pdev)->driver_data == TYPE_S3C64XX) {
 		/* Clear ADC interrupt */
 		writel(0, adc->regs + S3C64XX_ADCCLRINT);
 	}