diff options
Diffstat (limited to 'drivers/gpu/drm/stm/ltdc.c')
| -rw-r--r-- | drivers/gpu/drm/stm/ltdc.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c index 58092b0b8885..8750ee831bea 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -648,9 +648,14 @@ static const struct drm_crtc_helper_funcs ltdc_crtc_helper_funcs = { static int ltdc_crtc_enable_vblank(struct drm_crtc *crtc) { struct ltdc_device *ldev = crtc_to_ltdc(crtc); + struct drm_crtc_state *state = crtc->state; DRM_DEBUG_DRIVER("\n"); - reg_set(ldev->regs, LTDC_IER, IER_LIE); + + if (state->enable) + reg_set(ldev->regs, LTDC_IER, IER_LIE); + else + return -EPERM; return 0; } |