From: Michel Dänzer <michel.daenzer@xxxxxxx>
We get multiple udev events for actions like docking a laptop into its
station or plugging a monitor to the station. By consuming as many
events as we can, we reduce the number of output re-evalutions.
It depends on the timing how many events can be consumed at once.
(Inspired by xserver commit 363f4273dd4aec3e26cc57ecb6c20f27e6c813d8)
Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
src/drmmode_display.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/src/drmmode_display.c b/src/drmmode_display.c
index a5a34fd..9cf4846 100644
--- a/src/drmmode_display.c
+++ b/src/drmmode_display.c
@@ -2656,12 +2656,15 @@ drmmode_handle_uevents(int fd, void *closure)
drmmode_ptr drmmode = closure;
ScrnInfoPtr scrn = drmmode->scrn;
struct udev_device *dev;
- dev = udev_monitor_receive_device(drmmode->uevent_monitor);
- if (!dev)
- return;
+ Bool received = FALSE;
+
+ while ((dev = udev_monitor_receive_device(drmmode->uevent_monitor))) {
+ udev_device_unref(dev);
+ received = TRUE;
+ }
- radeon_mode_hotplug(scrn, drmmode);
- udev_device_unref(dev);
+ if (received)
+ radeon_mode_hotplug(scrn, drmmode);
}
#endif
--
2.10.1
