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mfd: twl6040: Check clk_prepare_enable() return value in twl6040_power()

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The clk_prepare_enable() function can fail so check the return
value and propagate the error in case of a failure.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Javier Martinez Canillas 2016-04-20 11:16:38 -04:00 committed by Lee Jones
parent 38fc2eec95
commit 32852bcab2
1 changed files with 5 additions and 1 deletions
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6
drivers/mfd/twl6040.c
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@ -291,7 +291,11 @@ int twl6040_power(struct twl6040 *twl6040, int on)
if (twl6040->power_count++)
goto out;
clk_prepare_enable(twl6040->clk32k);
ret = clk_prepare_enable(twl6040->clk32k);
if (ret) {
twl6040->power_count = 0;
goto out;
}
/* Allow writes to the chip */
regcache_cache_only(twl6040->regmap, false);