TIF_RESTORE_SIGMASK can be set only when TIF_SIGPENDING is set

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

13 files changed, 14 insertions, 19 deletions

diff --git a/arch/avr32/kernel/entry-avr32b.S b/arch/avr32/kernel/entry-avr32b.S
index 5e6beb2597a8..df2884181313 100644
--- a/arch/avr32/kernel/entry-avr32b.S
+++ b/arch/avr32/kernel/entry-avr32b.S
@@ -281,7 +281,7 @@ syscall_exit_work:
         ld.w    r1, r0[TI_flags]
         rjmp    1b
 
-2:      mov     r2, _TIF_SIGPENDING | _TIF_RESTORE_SIGMASK | _TIF_NOTIFY_RESUME
+2:      mov     r2, _TIF_SIGPENDING | _TIF_NOTIFY_RESUME
         tst     r1, r2
         breq    3f
         unmask_interrupts
@@ -587,7 +587,7 @@ fault_exit_work:
         ld.w    r1, r0[TI_flags]
         rjmp    fault_exit_work
 
-1:      mov     r2, _TIF_SIGPENDING | _TIF_RESTORE_SIGMASK | _TIF_NOTIFY_RESUME
+1:      mov     r2, _TIF_SIGPENDING | _TIF_NOTIFY_RESUME
         tst     r1, r2
         breq    2f
         unmask_interrupts
diff --git a/arch/avr32/kernel/signal.c b/arch/avr32/kernel/signal.c
index dc7875a0ad79..3ac1a60f9eb6 100644
--- a/arch/avr32/kernel/signal.c
+++ b/arch/avr32/kernel/signal.c
@@ -303,7 +303,7 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, struct thread_info *ti)
         if ((sysreg_read(SR) & MODE_MASK) == MODE_SUPERVISOR)
                 syscall = 1;
 
-        if (ti->flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
+        if (ti->flags & _TIF_SIGPENDING))
                 do_signal(regs, syscall);
 
         if (ti->flags & _TIF_NOTIFY_RESUME) {
diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c
index 93d1ecd9213c..b20d435d084a 100644
--- a/arch/blackfin/kernel/signal.c
+++ b/arch/blackfin/kernel/signal.c
@@ -307,7 +307,7 @@ asmlinkage void do_signal(struct pt_regs *regs)
  */
 asmlinkage void do_notify_resume(struct pt_regs *regs)
 {
-        if (test_thread_flag(TIF_SIGPENDING) || test_thread_flag(TIF_RESTORE_SIGMASK))
+        if (test_thread_flag(TIF_SIGPENDING))
                 do_signal(regs);
 
         if (test_thread_flag(TIF_NOTIFY_RESUME)) {
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index 80aa2535e2c9..04c2fbe41a7f 100644
--- a/arch/blackfin/mach-common/entry.S
+++ b/arch/blackfin/mach-common/entry.S
@@ -711,8 +711,6 @@ ENTRY(_system_call)
         jump .Lresume_userspace_1;
 
 .Lsyscall_sigpending:
-        cc = BITTST(r7, TIF_RESTORE_SIGMASK);
-        if cc jump .Lsyscall_do_signals;
         cc = BITTST(r7, TIF_SIGPENDING);
         if cc jump .Lsyscall_do_signals;
         cc = BITTST(r7, TIF_NOTIFY_RESUME);
diff --git a/arch/c6x/kernel/signal.c b/arch/c6x/kernel/signal.c
index f39346f1f2d6..d599a7fb5d24 100644
--- a/arch/c6x/kernel/signal.c
+++ b/arch/c6x/kernel/signal.c
@@ -335,8 +335,7 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags,
                                  int syscall)
 {
         /* deal with pending signal delivery */
-        if (thread_info_flags & ((1 << TIF_SIGPENDING) |
-                                 (1 << TIF_RESTORE_SIGMASK)))
+        if (thread_info_flags & (1 << TIF_SIGPENDING))
                 do_signal(regs, syscall);
 
         if (thread_info_flags & (1 << TIF_NOTIFY_RESUME)) {
diff --git a/arch/frv/kernel/signal.c b/arch/frv/kernel/signal.c
index c4d9cfa0c8a3..9ec3d2e27b4c 100644
--- a/arch/frv/kernel/signal.c
+++ b/arch/frv/kernel/signal.c
@@ -533,7 +533,7 @@ asmlinkage void do_notify_resume(__u32 thread_info_flags)
                 clear_thread_flag(TIF_SINGLESTEP);
 
         /* deal with pending signal delivery */
-        if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
+        if (thread_info_flags & _TIF_SIGPENDING))
                 do_signal();
 
         /* deal with notification on about to resume userspace execution */
diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index 53c6e90082f0..896165757e6f 100644
--- a/arch/mips/kernel/signal.c
+++ b/arch/mips/kernel/signal.c
@@ -610,7 +610,7 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, void *unused,
         local_irq_enable();
 
         /* deal with pending signal delivery */
-        if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
+        if (thread_info_flags & _TIF_SIGPENDING)
                 do_signal(regs);
 
         if (thread_info_flags & _TIF_NOTIFY_RESUME) {
diff --git a/arch/mn10300/kernel/signal.c b/arch/mn10300/kernel/signal.c
index 1715478f4e94..d57013e06ea0 100644
--- a/arch/mn10300/kernel/signal.c
+++ b/arch/mn10300/kernel/signal.c
@@ -532,7 +532,7 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags)
         }
 
         /* deal with pending signal delivery */
-        if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
+        if (thread_info_flags & _TIF_SIGPENDING)
                 do_signal(regs);
 
         if (thread_info_flags & _TIF_NOTIFY_RESUME) {
diff --git a/arch/parisc/include/asm/thread_info.h b/arch/parisc/include/asm/thread_info.h
index 83ae7dd4d99e..22b4726dee49 100644
--- a/arch/parisc/include/asm/thread_info.h
+++ b/arch/parisc/include/asm/thread_info.h
@@ -74,7 +74,7 @@ struct thread_info {
 #define _TIF_BLOCKSTEP          (1 << TIF_BLOCKSTEP)
 
 #define _TIF_USER_WORK_MASK     (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | \
-                                 _TIF_NEED_RESCHED | _TIF_RESTORE_SIGMASK)
+                                 _TIF_NEED_RESCHED)
 
 #endif /* __KERNEL__ */
 
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index c7fbc96472f3..18670a078849 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -924,7 +924,7 @@ intr_check_sig:
         /* As above */
         mfctl   %cr30,%r1
         LDREG   TI_FLAGS(%r1),%r19
-        ldi     (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK|_TIF_NOTIFY_RESUME), %r20
+        ldi     (_TIF_SIGPENDING|_TIF_NOTIFY_RESUME), %r20
         and,COND(<>)    %r19, %r20, %r0
         b,n     intr_restore    /* skip past if we've nothing to do */
 
@@ -2032,7 +2032,7 @@ syscall_check_resched:
         .import do_signal,code
 syscall_check_sig:
         LDREG   TI_FLAGS-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r19
-        ldi     (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK|_TIF_NOTIFY_RESUME), %r26
+        ldi     (_TIF_SIGPENDING|_TIF_NOTIFY_RESUME), %r26
         and,COND(<>)    %r19, %r26, %r0
         b,n     syscall_restore /* skip past if we've nothing to do */
 
diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index d6ddc572eba1..7f3c8f2c962d 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -613,8 +613,7 @@ do_signal(struct pt_regs *regs, long in_syscall)
 
 void do_notify_resume(struct pt_regs *regs, long in_syscall)
 {
-        if (test_thread_flag(TIF_SIGPENDING) ||
-            test_thread_flag(TIF_RESTORE_SIGMASK))
+        if (test_thread_flag(TIF_SIGPENDING))
                 do_signal(regs, in_syscall);
 
         if (test_thread_flag(TIF_NOTIFY_RESUME)) {
diff --git a/arch/sparc/include/asm/thread_info_32.h b/arch/sparc/include/asm/thread_info_32.h
index 5af664932452..e6cd224506a9 100644
--- a/arch/sparc/include/asm/thread_info_32.h
+++ b/arch/sparc/include/asm/thread_info_32.h
@@ -131,8 +131,7 @@ register struct thread_info *current_thread_info_reg asm("g6");
 #define _TIF_POLLING_NRFLAG     (1<<TIF_POLLING_NRFLAG)
 
 #define _TIF_DO_NOTIFY_RESUME_MASK      (_TIF_NOTIFY_RESUME | \
-                                         _TIF_SIGPENDING | \
-                                         _TIF_RESTORE_SIGMASK)
+                                         _TIF_SIGPENDING)
 
 #endif /* __KERNEL__ */
 
diff --git a/arch/sparc/kernel/signal_32.c b/arch/sparc/kernel/signal_32.c
index ee81b90c532f..f6722427203d 100644
--- a/arch/sparc/kernel/signal_32.c
+++ b/arch/sparc/kernel/signal_32.c
@@ -567,7 +567,7 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
 void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0,
                       unsigned long thread_info_flags)
 {
-        if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
+        if (thread_info_flags & _TIF_SIGPENDING)
                 do_signal(regs, orig_i0);
         if (thread_info_flags & _TIF_NOTIFY_RESUME) {
                 clear_thread_flag(TIF_NOTIFY_RESUME);