[PATCH 3/3] linux-user: Return void from queue_signal()

[Peter Maydell <peter.maydell@linaro.org>]

The linux-user queue_signal() function always returns 1, and none of
its callers check the return value.  Give it a void return type
instead.

The return value is a leftover from the old pre-2016 linux-user
signal handling code, which really did have a queue of signals and so
might return a failure indication if too many signals were queued at
once.  The current design avoids having to ever have more than one
signal queued via queue_signal() at once, so it can never fail.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 linux-user/signal-common.h | 4 ++--
 linux-user/signal.c        | 5 ++---
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/linux-user/signal-common.h b/linux-user/signal-common.h
index 42aa479080b..2113165a758 100644
--- a/linux-user/signal-common.h
+++ b/linux-user/signal-common.h
@@ -59,8 +59,8 @@ void setup_rt_frame(int sig, struct target_sigaction *ka,
 
 void process_pending_signals(CPUArchState *cpu_env);
 void signal_init(void);
-int queue_signal(CPUArchState *env, int sig, int si_type,
-                 target_siginfo_t *info);
+void queue_signal(CPUArchState *env, int sig, int si_type,
+                  target_siginfo_t *info);
 void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
 void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
 int target_to_host_signal(int sig);
diff --git a/linux-user/signal.c b/linux-user/signal.c
index bfbbeab9ad2..32854bb3752 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -780,8 +780,8 @@ static void QEMU_NORETURN dump_core_and_abort(int target_sig)
 
 /* queue a signal so that it will be send to the virtual CPU as soon
    as possible */
-int queue_signal(CPUArchState *env, int sig, int si_type,
-                 target_siginfo_t *info)
+void queue_signal(CPUArchState *env, int sig, int si_type,
+                  target_siginfo_t *info)
 {
     CPUState *cpu = env_cpu(env);
     TaskState *ts = cpu->opaque;
@@ -794,7 +794,6 @@ int queue_signal(CPUArchState *env, int sig, int si_type,
     ts->sync_signal.pending = sig;
     /* signal that a new signal is pending */
     qatomic_set(&ts->signal_pending, 1);
-    return 1; /* indicates that the signal was queued */
 }
 
 
-- 
2.25.1