diff options
| author | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2014-05-02 21:15:14 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2014-05-22 10:09:24 +0200 |
| commit | 6ed7053c2255c34886297b995c6a18607b36d668 (patch) | |
| tree | f60dd88b7667bdbb250937f190d25582c67148b4 /drivers/i2c/busses/i2c-sh_mobile.c | |
| parent | ed4121e129ae46615ab570318b5b8f31494ced98 (diff) | |
| download | linux-next-6ed7053c2255c34886297b995c6a18607b36d668.tar.gz | |
i2c: sh_mobile: bail out on errors when initializing
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@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-sh_mobile.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-sh_mobile.c | 12 |
1 files 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. * |