USB: Fix up full-speed bInterval values in high-speed interrupt descriptor

[pandora-kernel.git] / kernel / signal.c

diff --git a/kernel/signal.c b/kernel/signal.c
index acdfc05..f940560 100644 (file)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -105,7 +105,11 @@ static int recalc_sigpending_tsk(struct task_struct *t)
                set_tsk_thread_flag(t, TIF_SIGPENDING);
                return 1;
        }
-       clear_tsk_thread_flag(t, TIF_SIGPENDING);
+       /*
+        * We must never clear the flag in another thread, or in current
+        * when it's possible the current syscall is returning -ERESTART*.
+        * So we don't clear it here, and only callers who know they should do.
+        */
        return 0;
 }
 
@@ -121,7 +125,9 @@ void recalc_sigpending_and_wake(struct task_struct *t)
 
 void recalc_sigpending(void)
 {
-       recalc_sigpending_tsk(current);
+       if (!recalc_sigpending_tsk(current))
+               clear_thread_flag(TIF_SIGPENDING);
+
 }
 
 /* Given the mask, find the first available signal that should be serviced. */
@@ -357,7 +363,13 @@ static int __dequeue_signal(struct sigpending *pending, sigset_t *mask,
  */
 int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info)
 {
-       int signr = __dequeue_signal(&tsk->pending, mask, info);
+       int signr = 0;
+
+       /* We only dequeue private signals from ourselves, we don't let
+        * signalfd steal them
+        */
+       if (tsk == current)
+               signr = __dequeue_signal(&tsk->pending, mask, info);
        if (!signr) {
                signr = __dequeue_signal(&tsk->signal->shared_pending,
                                         mask, info);
@@ -385,7 +397,8 @@ int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info)
                        }
                }
        }
-       recalc_sigpending_tsk(tsk);
+       if (likely(tsk == current))
+               recalc_sigpending();
        if (signr && unlikely(sig_kernel_stop(signr))) {
                /*
                 * Set a marker that we have dequeued a stop signal.  Our
@@ -1580,8 +1593,9 @@ static void ptrace_stop(int exit_code, int nostop_code, siginfo_t *info)
        /*
         * Queued signals ignored us while we were stopped for tracing.
         * So check for any that we should take before resuming user mode.
+        * This sets TIF_SIGPENDING, but never clears it.
         */
-       recalc_sigpending();
+       recalc_sigpending_tsk(current);
 }
 
 void ptrace_notify(int exit_code)