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atomic: do not allow removal of the last connector

This commit is contained in:
Victor Brekenfeld 2020-04-26 17:32:16 +02:00
parent da18c3a5f3
commit c7a98cee21
1 changed files with 9 additions and 0 deletions
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9
src/backend/drm/atomic/surface.rs
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@ -285,6 +285,11 @@ impl<A: AsRawFd + 'static> Surface for AtomicDrmSurfaceInternal<A> {
let mut pending = self.pending.write().unwrap();
// the test would also prevent this, but the error message is far less helpful
if pending.connectors.contains(&conn) && pending.connectors.len() == 1 {
return Err(Error::SurfaceWithoutConnectors(self.crtc));
}
// check if new config is supported (should be)
let req = self.build_request(
&mut [].iter(),
@ -308,6 +313,10 @@ impl<A: AsRawFd + 'static> Surface for AtomicDrmSurfaceInternal<A> {
}
fn set_connectors(&self, connectors: &[connector::Handle]) -> Result<(), Error> {
if connectors.is_empty() {
return Err(Error::SurfaceWithoutConnectors(self.crtc));
}
if !self.dev.active.load(Ordering::SeqCst) {
return Err(Error::DeviceInactive);
}