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authorDave Airlie <airlied@redhat.com>2014-11-26 06:15:24 +0300
committerDave Airlie <airlied@redhat.com>2014-12-09 02:56:45 +0300
commite2809c7db818df6bbd0edf843e1beb2fbc9d8541 (patch)
treeed7ba4d60fc1a8c1111430bc29ea4110adef682b /drivers/gpu/drm/drm_fb_helper.c
parent19a93f042fc241ecdf98543cedfe7c171f8cdf53 (diff)
downloadlinux-e2809c7db818df6bbd0edf843e1beb2fbc9d8541.tar.xz
drm/fb_helper: move deferred fb checking into restore mode (v2)
On MST systems the monitors don't appear when we set the fb up, but plymouth opens the drm device and holds it open while they come up, when plymouth finishes and lastclose gets called we don't do the delayed fb probe, so the monitor never appears on the console. Fix this by moving the delayed checking into the mode restore. v2: Daniel suggested that ->delayed_hotplug is set under the mode_config mutex, so we should check it under that as well, while we are in the area. Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/drm_fb_helper.c')
-rw-r--r--drivers/gpu/drm/drm_fb_helper.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 09d47e9ba026..a467460f2aa6 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -347,9 +347,18 @@ bool drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper)
{
struct drm_device *dev = fb_helper->dev;
bool ret;
+ bool do_delayed = false;
+
drm_modeset_lock_all(dev);
ret = restore_fbdev_mode(fb_helper);
+
+ do_delayed = fb_helper->delayed_hotplug;
+ if (do_delayed)
+ fb_helper->delayed_hotplug = false;
drm_modeset_unlock_all(dev);
+
+ if (do_delayed)
+ drm_fb_helper_hotplug_event(fb_helper);
return ret;
}
EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode_unlocked);
@@ -888,10 +897,6 @@ int drm_fb_helper_set_par(struct fb_info *info)
drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper);
- if (fb_helper->delayed_hotplug) {
- fb_helper->delayed_hotplug = false;
- drm_fb_helper_hotplug_event(fb_helper);
- }
return 0;
}
EXPORT_SYMBOL(drm_fb_helper_set_par);