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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2024-02-19 07:51:35 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2024-02-19 07:51:35 +0100
commit07749061b837a1268146dc8a620a522253cea877 (patch)
tree3708ac3f1a088869daf7e9826bc4b56abfcdac74 /drivers/android/binder.c
parent5c0941c55e5f681ffb05f395222ac673460bb3d0 (diff)
parentb401b621758e46812da61fa58a67c3fd8d91de0d (diff)
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Merge 6.8-rc5 into driver-core-next
We need the driver core changes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/android/binder.c')
-rw-r--r--drivers/android/binder.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index 8dd23b19e997..eca24f41556d 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -478,6 +478,16 @@ binder_enqueue_thread_work_ilocked(struct binder_thread *thread,
{
WARN_ON(!list_empty(&thread->waiting_thread_node));
binder_enqueue_work_ilocked(work, &thread->todo);
+
+ /* (e)poll-based threads require an explicit wakeup signal when
+ * queuing their own work; they rely on these events to consume
+ * messages without I/O block. Without it, threads risk waiting
+ * indefinitely without handling the work.
+ */
+ if (thread->looper & BINDER_LOOPER_STATE_POLL &&
+ thread->pid == current->pid && !thread->process_todo)
+ wake_up_interruptible_sync(&thread->wait);
+
thread->process_todo = true;
}