Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: (96 commits)
  Blackfin: stop cleaning include/asm/asm-offsets.h
  Blackfin: scale calibration when cpu freq changes
  Blackfin: eat spurious space in asm/dpmc.h
  Blackfin: fix anomaly 283 handling with exact hardware error
  Blackfin: bf537-stamp: add example ADXL346 orientation resources
  Blackfin: bf537-stamp: add example AD2S1210 IIO resources
  Blackfin: don't support keypad wakeup from hibernate
  Blackfin: bf537-stamp: add example AD7416 IIO resources
  Blackfin: bf537-stamp: add example ADP8860 backlight/led resources
  Blackfin: bf537-stamp: add example AD7414 temp sensor resources
  Blackfin: rename AD1836 to AD183X in board files
  Blackfin: bf537-stamp: add example AD2S120x resources
  Blackfin: add support for the on-chip MAC status interrupts
  Blackfin: asm/page.h: pull in asm-generic headers
  Blackfin: mark gpio lib functions static
  Blackfin: bf537-stamp: add example ADAU1361 resources
  Blackfin: GPIO: implement to_irq handler
  Blackfin: bf537-stamp: add example ADP122/ADP150 power regulator resources
  Blackfin: bf537-stamp: add example AD2S90 resources
  Blackfin: bf537-stamp: add example AD5398 power regulator resources
  ...

1 files changed, 13 insertions, 11 deletions

diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c
index e0fd63e9e38a..d536f35d1f43 100644
--- a/arch/blackfin/kernel/signal.c
+++ b/arch/blackfin/kernel/signal.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2004-2009 Analog Devices Inc.
+ * Copyright 2004-2010 Analog Devices Inc.
  *
  * Licensed under the GPL-2 or later
  */
@@ -17,6 +17,7 @@
 #include <asm/cacheflush.h>
 #include <asm/ucontext.h>
 #include <asm/fixed_code.h>
+#include <asm/syscall.h>
 
 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
 
@@ -50,6 +51,9 @@ rt_restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *p
 	unsigned long usp = 0;
 	int err = 0;
 
+	/* Always make any pending restarted system calls return -EINTR */
+	current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
 #define RESTORE(x) err |= __get_user(regs->x, &sc->sc_##x)
 
 	/* restore passed registers */
@@ -206,16 +210,6 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t * info,
 	regs->r1 = (unsigned long)(&frame->info);
 	regs->r2 = (unsigned long)(&frame->uc);
 
-	/*
-	 * Clear the trace flag when entering the signal handler, but
-	 * notify any tracer that was single-stepping it. The tracer
-	 * may want to single-step inside the handler too.
-	 */
-	if (regs->syscfg & TRACE_BITS) {
-		regs->syscfg &= ~TRACE_BITS;
-		ptrace_notify(SIGTRAP);
-	}
-
 	return 0;
 
  give_sigsegv:
@@ -247,6 +241,11 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler)
 		regs->r0 = regs->orig_r0;
 		regs->pc -= 2;
 		break;
+
+	case -ERESTART_RESTARTBLOCK:
+		regs->p0 = __NR_restart_syscall;
+		regs->pc -= 2;
+		break;
 	}
 }
 
@@ -315,6 +314,9 @@ asmlinkage void do_signal(struct pt_regs *regs)
 			 * clear the TIF_RESTORE_SIGMASK flag */
 			if (test_thread_flag(TIF_RESTORE_SIGMASK))
 				clear_thread_flag(TIF_RESTORE_SIGMASK);
+
+			tracehook_signal_handler(signr, &info, &ka, regs,
+				test_thread_flag(TIF_SINGLESTEP));
 		}
 
 		return;