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From: Jaehoon Chung <jh80.chung@samsung.com>
To: "linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>
Cc: 'Chris Ball' <cjb@laptop.org>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Ben Dooks <ben-linux@fluff.org>
Subject: [PATCH] mmc: sdhci-s3c: fix the wrong register value when clock is, disabled
Date: Mon, 22 Apr 2013 14:02:25 +0900	[thread overview]
Message-ID: <5174C461.9010603@samsung.com> (raw)

When use the QUIRK_NONSTANDARD_CLOCK, then never set to 0 at clock
control register.
This patch is fixed this problem.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
---
 drivers/mmc/host/sdhci-s3c.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 8cd966d..317bde2 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -298,8 +298,11 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
 	u16 clk = 0;
 
 	/* don't bother if the clock is going off */
-	if (clock == 0)
+	if (clock == 0) {
+		sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
+		host->clock = clock;
 		return;
+	}
 
 	sdhci_s3c_set_clock(host, clock);
 
-- 
1.7.9.5

                 reply	other threads:[~2013-04-22  5:02 UTC|newest]

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