This may confuse user-space clients like plymouth that opens a drm file descriptor as a result of a hotplug event and then generates a new event...
Cc: stable@vger.kernel.org Fixes: 5ea1734827bb ("drm/vmwgfx: Send a hotplug event at master_set") Signed-off-by: Thomas Hellstrom thellstrom@vmware.com Reviewed-by: Deepak Rawat drawat@vmware.com --- drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index bf6c3500d363..4ff11a0077e1 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -1239,7 +1239,13 @@ static int vmw_master_set(struct drm_device *dev, }
dev_priv->active_master = vmaster; - drm_sysfs_hotplug_event(dev); + + /* + * Inform a new master that the layout may have changed while + * it was gone. + */ + if (!from_open) + drm_sysfs_hotplug_event(dev);
return 0; }