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 <[email protected]> --- drivers/mfd/twl6040.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/mfd/twl6040.c b/drivers/mfd/twl6040.c index 4de92c16dfb8..852d5874aabb 100644 --- a/drivers/mfd/twl6040.c +++ b/drivers/mfd/twl6040.c @@ -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); -- 2.5.5
