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-rw-r--r--drivers/i2c/busses/i2c-s3c2410.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 6a292ea5e35c..6c00c107ebf3 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -554,18 +554,23 @@ static int s3c24xx_i2c_xfer(struct i2c_adapter *adap,
int retry;
int ret;
+ clk_enable(i2c->clk);
+
for (retry = 0; retry < adap->retries; retry++) {
ret = s3c24xx_i2c_doxfer(i2c, msgs, num);
- if (ret != -EAGAIN)
+ if (ret != -EAGAIN) {
+ clk_disable(i2c->clk);
return ret;
+ }
dev_dbg(i2c->dev, "Retrying transmission (%d)\n", retry);
udelay(100);
}
+ clk_disable(i2c->clk);
return -EREMOTEIO;
}
@@ -910,6 +915,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, i2c);
dev_info(&pdev->dev, "%s: S3C I2C adapter\n", dev_name(&i2c->adap.dev));
+ clk_disable(i2c->clk);
return 0;
err_cpufreq:
@@ -977,7 +983,9 @@ static int s3c24xx_i2c_resume(struct device *dev)
struct s3c24xx_i2c *i2c = platform_get_drvdata(pdev);
i2c->suspended = 0;
+ clk_enable(i2c->clk);
s3c24xx_i2c_init(i2c);
+ clk_disable(i2c->clk);
return 0;
}