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authorGuenter Roeck <linux@roeck-us.net>2019-06-07 13:27:06 -0700
committerGuenter Roeck <linux@roeck-us.net>2019-06-23 18:32:34 -0700
commit5696e4aaabf2a6bae0fe8b4abf17fe17c2b03beb (patch)
treef28c240ade7c7c6bc59aa862d670684c93080988 /drivers/hwmon/pwm-fan.c
parentb9bb92e1d1be921e91d8b469dc1261ea5ac71991 (diff)
downloadlinux-5696e4aaabf2a6bae0fe8b4abf17fe17c2b03beb.tar.bz2
hwmon: (pwm-fan) Check return value from devm_add_action_or_reset
devm_add_action_or_reset() can fail due to a memory allocation failure. Check for it and return the error if that happens. Fixes: 37bcec5d9f71 ("hwmon: (pwm-fan) Use devm_thermal_of_cooling_device_register") Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/pwm-fan.c')
-rw-r--r--drivers/hwmon/pwm-fan.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/hwmon/pwm-fan.c b/drivers/hwmon/pwm-fan.c
index 08c9b9f1c16e..54c0ff00d67f 100644
--- a/drivers/hwmon/pwm-fan.c
+++ b/drivers/hwmon/pwm-fan.c
@@ -320,8 +320,10 @@ static int pwm_fan_probe(struct platform_device *pdev)
dev_err(dev, "Failed to enable fan supply: %d\n", ret);
return ret;
}
- devm_add_action_or_reset(dev, pwm_fan_regulator_disable,
- ctx->reg_en);
+ ret = devm_add_action_or_reset(dev, pwm_fan_regulator_disable,
+ ctx->reg_en);
+ if (ret)
+ return ret;
}
ctx->pwm_value = MAX_PWM;
@@ -337,7 +339,9 @@ static int pwm_fan_probe(struct platform_device *pdev)
return ret;
}
timer_setup(&ctx->rpm_timer, sample_timer, 0);
- devm_add_action_or_reset(dev, pwm_fan_pwm_disable, ctx);
+ ret = devm_add_action_or_reset(dev, pwm_fan_pwm_disable, ctx);
+ if (ret)
+ return ret;
of_property_read_u32(dev->of_node, "pulses-per-revolution", &ppr);
ctx->pulses_per_revolution = ppr;