diff options
Diffstat (limited to 'drivers/gpu/drm/drm_fb_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_fb_helper.c | 30 |
1 files changed, 6 insertions, 24 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 11a5b60cb9ce..53e9dc0543de 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -368,6 +368,10 @@ static void drm_fb_helper_fb_dirty(struct drm_fb_helper *helper) unsigned long flags; int ret; + mutex_lock(&helper->lock); + drm_client_modeset_wait_for_vblank(&helper->client, 0); + mutex_unlock(&helper->lock); + if (drm_WARN_ON_ONCE(dev, !helper->funcs->fb_dirty)) return; @@ -1068,15 +1072,9 @@ int drm_fb_helper_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) { struct drm_fb_helper *fb_helper = info->par; - struct drm_device *dev = fb_helper->dev; - struct drm_crtc *crtc; int ret = 0; - mutex_lock(&fb_helper->lock); - if (!drm_master_internal_acquire(dev)) { - ret = -EBUSY; - goto unlock; - } + guard(mutex)(&fb_helper->lock); switch (cmd) { case FBIO_WAITFORVSYNC: @@ -1096,28 +1094,12 @@ int drm_fb_helper_ioctl(struct fb_info *info, unsigned int cmd, * make. If we're not smart enough here, one should * just consider switch the userspace to KMS. */ - crtc = fb_helper->client.modesets[0].crtc; - - /* - * Only wait for a vblank event if the CRTC is - * enabled, otherwise just don't do anythintg, - * not even report an error. - */ - ret = drm_crtc_vblank_get(crtc); - if (!ret) { - drm_crtc_wait_one_vblank(crtc); - drm_crtc_vblank_put(crtc); - } - - ret = 0; + ret = drm_client_modeset_wait_for_vblank(&fb_helper->client, 0); break; default: ret = -ENOTTY; } - drm_master_internal_release(dev); -unlock: - mutex_unlock(&fb_helper->lock); return ret; } EXPORT_SYMBOL(drm_fb_helper_ioctl); |