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| author | Martijn Coenen <maco@android.com> | 2017-10-09 14:26:56 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-20 12:53:43 +0200 |
| commit | 66b83a4cdd3b73effdc285d1d66763c69ffe2ee8 (patch) | |
| tree | 4b5a6f1703ff3f9634e633dc58e6693cbb391463 | |
| parent | 33d930e59a98fa10a0db9f56c7fa2f21a4aef9b9 (diff) | |
| download | linux-66b83a4cdd3b73effdc285d1d66763c69ffe2ee8.tar.gz linux-66b83a4cdd3b73effdc285d1d66763c69ffe2ee8.tar.bz2 linux-66b83a4cdd3b73effdc285d1d66763c69ffe2ee8.zip | |
binder: call poll_wait() unconditionally.
Because we're not guaranteed that subsequent calls
to poll() will have a poll_table_struct parameter
with _qproc set. When _qproc is not set, poll_wait()
is a noop, and we won't be woken up correctly.
Signed-off-by: Martijn Coenen <maco@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/android/binder.c | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 0621a95b8597..fddf76ef5bd6 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -3662,12 +3662,6 @@ static void binder_stat_br(struct binder_proc *proc, } } -static int binder_has_thread_work(struct binder_thread *thread) -{ - return !binder_worklist_empty(thread->proc, &thread->todo) || - thread->looper_need_return; -} - static int binder_put_node_cmd(struct binder_proc *proc, struct binder_thread *thread, void __user **ptrp, @@ -4297,12 +4291,9 @@ static unsigned int binder_poll(struct file *filp, binder_inner_proc_unlock(thread->proc); - if (binder_has_work(thread, wait_for_proc_work)) - return POLLIN; - poll_wait(filp, &thread->wait, wait); - if (binder_has_thread_work(thread)) + if (binder_has_work(thread, wait_for_proc_work)) return POLLIN; return 0; |