diff options
Diffstat (limited to 'drivers/gpu/drm/drm_color_mgmt.c')
| -rw-r--r-- | drivers/gpu/drm/drm_color_mgmt.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/drivers/gpu/drm/drm_color_mgmt.c b/drivers/gpu/drm/drm_color_mgmt.c index cc23b9a505c0..a32be59a72d1 100644 --- a/drivers/gpu/drm/drm_color_mgmt.c +++ b/drivers/gpu/drm/drm_color_mgmt.c @@ -295,19 +295,15 @@ int drm_mode_gamma_get_ioctl(struct drm_device *dev, if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; - drm_modeset_lock_all(dev); crtc = drm_crtc_find(dev, crtc_lut->crtc_id); - if (!crtc) { - ret = -ENOENT; - goto out; - } + if (!crtc) + return -ENOENT; /* memcpy into gamma store */ - if (crtc_lut->gamma_size != crtc->gamma_size) { - ret = -EINVAL; - goto out; - } + if (crtc_lut->gamma_size != crtc->gamma_size) + return -EINVAL; + drm_modeset_lock(&crtc->mutex, NULL); size = crtc_lut->gamma_size * (sizeof(uint16_t)); r_base = crtc->gamma_store; if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) { @@ -327,6 +323,6 @@ int drm_mode_gamma_get_ioctl(struct drm_device *dev, goto out; } out: - drm_modeset_unlock_all(dev); + drm_modeset_unlock(&crtc->mutex); return ret; } |