[Linux-stm32] [bug report] drm/stm: support runtime power management

[Dan Carpenter]

Hello Yannick Fertré,

The patch 35ab6cfbf211: "drm/stm: support runtime power management"
from Jun 3, 2019, leads to the following Smatch static checker
warning:

	drivers/gpu/drm/stm/ltdc.c:940 ltdc_crtc_mode_set_nofb()
	warn: pm_runtime_get_sync() also returns 1 on success

drivers/gpu/drm/stm/ltdc.c
    937 
    938         if (!pm_runtime_active(ddev->dev)) {
    939                 ret = pm_runtime_get_sync(ddev->dev);
--> 940                 if (ret) {

Yep.  Better to use pm_runtime_resume_and_get().

    941                         DRM_ERROR("Failed to set mode, cannot get sync\n");
    942                         return;
    943                 }
    944         }
    945 

regards,
dan carpenter