drm/radeon: block the keypress on ATIF events
The AMD ACPI interface may use ACPI_VIDEO_NOTIFY_PROBE to signal SBIOS
requests; block the keypress in this case since the user did not
actually press the mode switch key.
Signed-off-by: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon_acpi.c b/drivers/gpu/drm/radeon/radeon_acpi.c
index ea22f44..3486292 100644
--- a/drivers/gpu/drm/radeon/radeon_acpi.c
+++ b/drivers/gpu/drm/radeon/radeon_acpi.c
@@ -301,7 +301,12 @@
}
/* TODO: check other events */
- return NOTIFY_OK;
+ /* We've handled the event, stop the notifier chain. The ACPI interface
+ * overloads ACPI_VIDEO_NOTIFY_PROBE, we don't want to send that to
+ * userspace if the event was generated only to signal a SBIOS
+ * request.
+ */
+ return NOTIFY_BAD;
}
static int radeon_acpi_event(struct notifier_block *nb,