diff options
| author | Eddie James <eajames@linux.ibm.com> | 2019-11-06 14:01:05 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-23 08:23:00 +0100 |
| commit | c6743bc169fbb211063095942c03d6200e22665b (patch) | |
| tree | 3ec521330076b54ff83ac1aca5054e8a8743f5a7 /drivers/hwmon | |
| parent | 6299d9ccd3b0662334672a77695470e5e588c11f (diff) | |
hwmon: (pmbus/ibm-cffps) Switch LEDs to blocking brightness call
commit 9861ff954c7e83e2f738ce16fbe15f8a1e121771 upstream.
Since i2c_smbus functions can sleep, the brightness setting function
for this driver must be the blocking version to avoid scheduling while
atomic.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20191106200106.29519-2-eajames@linux.ibm.com
Fixes: ef9e1cdf419a3 ("hwmon: (pmbus/cffps) Add led class device for power supply fault led")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/pmbus/ibm-cffps.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/hwmon/pmbus/ibm-cffps.c b/drivers/hwmon/pmbus/ibm-cffps.c index d44745e498e7..aa4cdbbb100a 100644 --- a/drivers/hwmon/pmbus/ibm-cffps.c +++ b/drivers/hwmon/pmbus/ibm-cffps.c @@ -292,8 +292,8 @@ static int ibm_cffps_read_word_data(struct i2c_client *client, int page, return rc; } -static void ibm_cffps_led_brightness_set(struct led_classdev *led_cdev, - enum led_brightness brightness) +static int ibm_cffps_led_brightness_set(struct led_classdev *led_cdev, + enum led_brightness brightness) { int rc; struct ibm_cffps *psu = container_of(led_cdev, struct ibm_cffps, led); @@ -311,9 +311,11 @@ static void ibm_cffps_led_brightness_set(struct led_classdev *led_cdev, rc = i2c_smbus_write_byte_data(psu->client, CFFPS_SYS_CONFIG_CMD, psu->led_state); if (rc < 0) - return; + return rc; led_cdev->brightness = brightness; + + return 0; } static int ibm_cffps_led_blink_set(struct led_classdev *led_cdev, @@ -351,7 +353,7 @@ static void ibm_cffps_create_led_class(struct ibm_cffps *psu) client->addr); psu->led.name = psu->led_name; psu->led.max_brightness = LED_FULL; - psu->led.brightness_set = ibm_cffps_led_brightness_set; + psu->led.brightness_set_blocking = ibm_cffps_led_brightness_set; psu->led.blink_set = ibm_cffps_led_blink_set; rc = devm_led_classdev_register(dev, &psu->led); |