From: Heiko Stuebner <heiko@sntech.de>
Date: Wed, 12 Oct 2011 12:34:11 +0000 (+0900)
Subject: ARM: SAMSUNG: Fix mux bit modification in s3c_adc_select
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=df303e0236417ca006e04116f18641dbe4bd704a;p=deliverable%2Flinux.git

ARM: SAMSUNG: Fix mux bit modification in s3c_adc_select

The mux bits in the adccon register should be cleared only
if muxing is really done in ADCCON and not another register.

This patch introduces a conditional for this.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
---

diff --git a/arch/arm/plat-samsung/adc.c b/arch/arm/plat-samsung/adc.c
index ee8deef19481..7821055a5046 100644
--- a/arch/arm/plat-samsung/adc.c
+++ b/arch/arm/plat-samsung/adc.c
@@ -98,7 +98,8 @@ static inline void s3c_adc_select(struct adc_device *adc,
 
 	client->select_cb(client, 1);
 
-	con &= ~S3C2410_ADCCON_MUXMASK;
+	if (cpu == TYPE_ADCV1 || cpu == TYPE_ADCV2)
+		con &= ~S3C2410_ADCCON_MUXMASK;
 	con &= ~S3C2410_ADCCON_STDBM;
 	con &= ~S3C2410_ADCCON_STARTMASK;