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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-08 16:58:07 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-08 16:58:07 +0000
commit5a6d13c86f2fe6304450e907fc1d8d72da82efef (patch)
tree1bd4e8854203c575eabaa99e2c509f8886065733 /drivers/android/binder.c
parentAdding upstream version 6.1.76. (diff)
downloadlinux-84c1f1a2669300eff95517b777594aca7cc3ee5a.tar.xz
linux-84c1f1a2669300eff95517b777594aca7cc3ee5a.zip
Adding upstream version 6.1.82.upstream/6.1.82upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-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 d933ef6cc..55cd17a13 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -477,6 +477,16 @@ 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;
}