diff options
Diffstat (limited to 'drivers/leds/flash/leds-mt6360.c')
| -rw-r--r-- | drivers/leds/flash/leds-mt6360.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/leds/flash/leds-mt6360.c b/drivers/leds/flash/leds-mt6360.c index a90de82f45..4c74f1cf01 100644 --- a/drivers/leds/flash/leds-mt6360.c +++ b/drivers/leds/flash/leds-mt6360.c @@ -241,11 +241,21 @@ static int mt6360_strobe_set(struct led_classdev_flash *fl_cdev, bool state) u32 enable_mask = MT6360_STROBEN_MASK | MT6360_FLCSEN_MASK(led->led_no); u32 val = state ? MT6360_FLCSEN_MASK(led->led_no) : 0; u32 prev = priv->fled_strobe_used, curr; - int ret; + int ret = 0; mutex_lock(&priv->lock); /* + * If the state of the upcoming change is the same as the current LED + * device state, then skip the subsequent code to avoid conflict + * with the flow of turning on LED torch mode in V4L2. + */ + if (state == !!(BIT(led->led_no) & prev)) { + dev_info(lcdev->dev, "No change in strobe state [0x%x]\n", prev); + goto unlock; + } + + /* * Only one set of flash control logic, use the flag to avoid torch is * currently used */ @@ -633,14 +643,17 @@ static int mt6360_init_isnk_properties(struct mt6360_led *led, ret = fwnode_property_read_u32(child, "reg", ®); if (ret || reg > MT6360_LED_ISNK3 || - priv->leds_active & BIT(reg)) + priv->leds_active & BIT(reg)) { + fwnode_handle_put(child); return -EINVAL; + } ret = fwnode_property_read_u32(child, "color", &color); if (ret) { dev_err(priv->dev, "led %d, no color specified\n", led->led_no); + fwnode_handle_put(child); return ret; } |