[PATCH] extcon: arizona: Correct error handling on regmap_update_bits_check

Charles Keepax
2019-05-28T16:50:26Z

Ensure the case when regmap_update_bits_check fails and the change
variable is not updated is handled correctly.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
---
drivers/extcon/extcon-arizona.c | 22 +++++++++++++---------
1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 9327479c719c2..ba2d16de161f8 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -335,10 +335,12 @@ static void arizona_start_mic(struct arizona_extcon_info *info)

arizona_extcon_pulse_micbias(info);

- regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
- ARIZONA_MICD_ENA, ARIZONA_MICD_ENA,
- &change);
- if (!change) {
+ ret = regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
+ ARIZONA_MICD_ENA, ARIZONA_MICD_ENA,
+ &change);
+ if (ret < 0) {
+ dev_err(arizona->dev, "Failed to enable micd: %d\n", ret);
+ } else if (!change) {
regulator_disable(info->micvdd);
pm_runtime_put_autosuspend(info->dev);
}
@@ -350,12 +352,14 @@ static void arizona_stop_mic(struct arizona_extcon_info *info)
const char *widget = arizona_extcon_get_micbias(info);
struct snd_soc_dapm_context *dapm = arizona->dapm;
struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
- bool change;
+ bool change = false;
int ret;

- regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
- ARIZONA_MICD_ENA, 0,
- &change);
+ ret = regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
+ ARIZONA_MICD_ENA, 0,
+ &change);
+ if (ret < 0)
+ dev_err(arizona->dev, "Failed to disable micd: %d\n", ret);

ret = snd_soc_component_disable_pin(component, widget);
if (ret != 0)
@@ -1726,7 +1730,7 @@ static int arizona_extcon_remove(struct platform_device *pdev)
struct arizona_extcon_info *info = platform_get_drvdata(pdev);
struct arizona *arizona = info->arizona;
int jack_irq_rise, jack_irq_fall;
- bool change;
+ bool change = false;

regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
ARIZONA_MICD_ENA, 0,
--
2.11.0