[PATCH 3.11 199/272] i2c: wmt: add missing clk_disable_unprepare() on error

[Luis Henriques]

3.11.10.1 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Wei Yongjun <yongjun_wei at trendmicro.com.cn>

commit 2dc9688a106886db7191d30f30ffd61fde827efd upstream.

Add the missing clk_disable_unprepare() before return
from wmt_i2c_reset_hardware() in the error handling case.

Signed-off-by: Wei Yongjun <yongjun_wei at trendmicro.com.cn>
Signed-off-by: Wolfram Sang <wsa at the-dreams.de>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/i2c/busses/i2c-wmt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/i2c/busses/i2c-wmt.c b/drivers/i2c/busses/i2c-wmt.c
index baaa7d1..b04d37a 100644
--- a/drivers/i2c/busses/i2c-wmt.c
+++ b/drivers/i2c/busses/i2c-wmt.c
@@ -350,6 +350,7 @@ static int wmt_i2c_reset_hardware(struct wmt_i2c_dev *i2c_dev)
 	err = clk_set_rate(i2c_dev->clk, 20000000);
 	if (err) {
 		dev_err(i2c_dev->dev, "failed to set clock = 20Mhz\n");
+		clk_disable_unprepare(i2c_dev->clk);
 		return err;
 	}
 
-- 
1.8.3.2