When call platform_get_irq() to obtain the IRQ of the lcd fails, the returned error code should be propagated. However, we currently do not explicitly assign this error code to 'ret'. As a result, 0 was incorrectly returned.
Fixes: 7f7b96a8a0a1 ("drm/kmb: Add support for KeemBay Display") Reported-by: Hulk Robot hulkci@huawei.com Signed-off-by: Zhen Lei thunder.leizhen@huawei.com --- drivers/gpu/drm/kmb/kmb_drv.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/kmb/kmb_drv.c b/drivers/gpu/drm/kmb/kmb_drv.c index f64e06e1067dd8d..96ea1a2c11dd6a3 100644 --- a/drivers/gpu/drm/kmb/kmb_drv.c +++ b/drivers/gpu/drm/kmb/kmb_drv.c @@ -137,6 +137,7 @@ static int kmb_hw_init(struct drm_device *drm, unsigned long flags) /* Allocate LCD interrupt resources */ irq_lcd = platform_get_irq(pdev, 0); if (irq_lcd < 0) { + ret = irq_lcd; drm_err(&kmb->drm, "irq_lcd not found"); goto setup_fail; }