Simplify the code which fetches the input clock for a PWM channel by
using devm_clk_get_optional().
This comes with a small functional change: previously all errors except
EPROBE_DEFER were ignored. Now all other errors are also treated as
errors. If no input clock is present devm_clk_get_optional() will return
NULL instead of an error which matches the behavior of the old code.
Signed-off-by: Martin Blumenstingl <martin.blumensti...@googlemail.com>
---
drivers/pwm/pwm-meson.c | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)
diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
index 3fbbc4128ce8..35b38c7201c3 100644
--- a/drivers/pwm/pwm-meson.c
+++ b/drivers/pwm/pwm-meson.c
@@ -474,14 +474,9 @@ static int meson_pwm_init_channels(struct meson_pwm *meson,
snprintf(name, sizeof(name), "clkin%u", i);
- channel->clk_parent = devm_clk_get(dev, name);
- if (IS_ERR(channel->clk_parent)) {
- err = PTR_ERR(channel->clk_parent);
- if (err == -EPROBE_DEFER)
- return err;
-
- channel->clk_parent = NULL;
- }
+ channel->clk_parent = devm_clk_get_optional(dev, name);
+ if (IS_ERR(channel->clk_parent))
+ return PTR_ERR(channel->clk_parent);
}
return 0;
--
2.21.0
