From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
sh_mobile_i2c_init() could detect wrong settings, but didn't bail out,
so it would continue unconfigured. Fix this.
Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
---
drivers/i2c/busses/i2c-sh_mobile.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c
index 9a5b693454e1..9f02013eaeeb 100644
--- a/drivers/i2c/busses/i2c-sh_mobile.c
+++ b/drivers/i2c/busses/i2c-sh_mobile.c
@@ -228,7 +228,7 @@ static u32 sh_mobile_i2c_icch(unsigned long count_khz, u32 tHIGH, u32 tf)
return (((count_khz * (tHIGH + tf)) + 5000) / 10000);
}
-static void sh_mobile_i2c_init(struct sh_mobile_i2c_data *pd)
+static int sh_mobile_i2c_init(struct sh_mobile_i2c_data *pd)
{
unsigned long i2c_clk_khz;
u32 tHIGH, tLOW, tf;
@@ -236,6 +236,7 @@ static void sh_mobile_i2c_init(struct sh_mobile_i2c_data *pd)
/* Get clock rate after clock is enabled */
clk_prepare_enable(pd->clk);
i2c_clk_khz = clk_get_rate(pd->clk) / 1000;
+ clk_disable_unprepare(pd->clk);
i2c_clk_khz /= pd->clks_per_count;
if (pd->bus_speed == STANDARD_MODE) {
@@ -249,7 +250,7 @@ static void sh_mobile_i2c_init(struct sh_mobile_i2c_data *pd)
} else {
dev_err(pd->dev, "unrecognized bus speed %lu Hz\n",
pd->bus_speed);
- goto out;
+ return -EINVAL;
}
pd->iccl = sh_mobile_i2c_iccl(i2c_clk_khz, tLOW, tf);
@@ -266,8 +267,7 @@ static void sh_mobile_i2c_init(struct sh_mobile_i2c_data *pd)
else
pd->icic &= ~ICIC_ICCHB8;
-out:
- clk_disable_unprepare(pd->clk);
+ return 0;
}
static void activate_ch(struct sh_mobile_i2c_data *pd)
@@ -677,7 +677,9 @@ static int sh_mobile_i2c_probe(struct platform_device *dev)
if (resource_size(res) > 0x17)
pd->flags |= IIC_FLAG_HAS_ICIC67;
- sh_mobile_i2c_init(pd);
+ ret = sh_mobile_i2c_init(pd);
+ if (ret)
+ return ret;
/* Enable Runtime PM for this device.
*
--
1.9.2
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