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drivers: display: stm32_ltdc: fix return value #77950

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Merged
merged 1 commit into from
Sep 10, 2024
Merged

drivers: display: stm32_ltdc: fix return value #77950

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8 changes: 6 additions & 2 deletions drivers/display/display_stm32_ltdc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -254,8 +254,10 @@ static int stm32_ltdc_display_blanking_off(const struct device *dev)
const struct display_stm32_ltdc_config *config = dev->config;
const struct device *display_dev = config->display_controller;

/* Panel controller's phandle is not passed to LTDC in devicetree */
if (display_dev == NULL) {
return 0;
LOG_ERR("There is no panel controller to forward blanking_off call to");
return -ENOSYS;
}

if (!device_is_ready(display_dev)) {
Expand All @@ -271,8 +273,10 @@ static int stm32_ltdc_display_blanking_on(const struct device *dev)
const struct display_stm32_ltdc_config *config = dev->config;
const struct device *display_dev = config->display_controller;

/* Panel controller's phandle is not passed to LTDC in devicetree */
if (display_dev == NULL) {
return 0;
LOG_ERR("There is no panel controller to forward blanking_on call to");
return -ENOSYS;
}

if (!device_is_ready(config->display_controller)) {
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