Merge Linus' tree to be be to apply submitted patches to newer code than

current trivial.git base

4 files changed, 59 insertions, 68 deletions

diff --git a/arch/hexagon/include/asm/Kbuild b/arch/hexagon/include/asm/Kbuild
index 0e69796b58c7..5f234a5a2320 100644
--- a/arch/hexagon/include/asm/Kbuild
+++ b/arch/hexagon/include/asm/Kbuild
@@ -23,6 +23,7 @@ generic-y += ioctls.h
 generic-y += iomap.h
 generic-y += ipcbuf.h
 generic-y += irq_regs.h
+generic-y += irq_work.h
 generic-y += kdebug.h
 generic-y += kmap_types.h
 generic-y += local.h
diff --git a/arch/hexagon/include/asm/atomic.h b/arch/hexagon/include/asm/atomic.h
index de916b11bff5..93d07025f183 100644
--- a/arch/hexagon/include/asm/atomic.h
+++ b/arch/hexagon/include/asm/atomic.h
@@ -94,41 +94,47 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
 	return __oldval;
 }
 
-static inline int atomic_add_return(int i, atomic_t *v)
-{
-	int output;
-
-	__asm__ __volatile__ (
-		"1:	%0 = memw_locked(%1);\n"
-		"	%0 = add(%0,%2);\n"
-		"	memw_locked(%1,P3)=%0;\n"
-		"	if !P3 jump 1b;\n"
-		: "=&r" (output)
-		: "r" (&v->counter), "r" (i)
-		: "memory", "p3"
-	);
-	return output;
-
+#define ATOMIC_OP(op)							\
+static inline void atomic_##op(int i, atomic_t *v)			\
+{									\
+	int output;							\
+									\
+	__asm__ __volatile__ (						\
+		"1:	%0 = memw_locked(%1);\n"			\
+		"	%0 = "#op "(%0,%2);\n"				\
+		"	memw_locked(%1,P3)=%0;\n"			\
+		"	if !P3 jump 1b;\n"				\
+		: "=&r" (output)					\
+		: "r" (&v->counter), "r" (i)				\
+		: "memory", "p3"					\
+	);								\
+}									\
+
+#define ATOMIC_OP_RETURN(op)							\
+static inline int atomic_##op##_return(int i, atomic_t *v)		\
+{									\
+	int output;							\
+									\
+	__asm__ __volatile__ (						\
+		"1:	%0 = memw_locked(%1);\n"			\
+		"	%0 = "#op "(%0,%2);\n"				\
+		"	memw_locked(%1,P3)=%0;\n"			\
+		"	if !P3 jump 1b;\n"				\
+		: "=&r" (output)					\
+		: "r" (&v->counter), "r" (i)				\
+		: "memory", "p3"					\
+	);								\
+	return output;							\
 }
 
-#define atomic_add(i, v) atomic_add_return(i, (v))
+#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op)
 
-static inline int atomic_sub_return(int i, atomic_t *v)
-{
-	int output;
-	__asm__ __volatile__ (
-		"1:	%0 = memw_locked(%1);\n"
-		"	%0 = sub(%0,%2);\n"
-		"	memw_locked(%1,P3)=%0\n"
-		"	if !P3 jump 1b;\n"
-		: "=&r" (output)
-		: "r" (&v->counter), "r" (i)
-		: "memory", "p3"
-	);
-	return output;
-}
+ATOMIC_OPS(add)
+ATOMIC_OPS(sub)
 
-#define atomic_sub(i, v) atomic_sub_return(i, (v))
+#undef ATOMIC_OPS
+#undef ATOMIC_OP_RETURN
+#undef ATOMIC_OP
 
 /**
  * __atomic_add_unless - add unless the number is a given value
diff --git a/arch/hexagon/kernel/signal.c b/arch/hexagon/kernel/signal.c
index d7c73874b515..eadd70e47e7e 100644
--- a/arch/hexagon/kernel/signal.c
+++ b/arch/hexagon/kernel/signal.c
@@ -36,18 +36,10 @@ struct rt_sigframe {
 	struct ucontext uc;
 };
 
-static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
+static void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
 			  size_t frame_size)
 {
-	unsigned long sp = regs->r29;
-
-	/* check if we would overflow the alt stack */
-	if (on_sig_stack(sp) && !likely(on_sig_stack(sp - frame_size)))
-		return (void __user __force *)-1UL;
-
-	/* Switch to signal stack if appropriate */
-	if ((ka->sa.sa_flags & SA_ONSTACK) && (sas_ss_flags(sp) == 0))
-		sp = current->sas_ss_sp + current->sas_ss_size;
+	unsigned long sp = sigsp(regs->r29, ksig);
 
 	return (void __user *)((sp - frame_size) & ~(sizeof(long long) - 1));
 }
@@ -112,20 +104,20 @@ static int restore_sigcontext(struct pt_regs *regs,
 /*
  * Setup signal stack frame with siginfo structure
  */
-static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info,
-			  sigset_t *set,  struct pt_regs *regs)
+static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
+			  struct pt_regs *regs)
 {
 	int err = 0;
 	struct rt_sigframe __user *frame;
 	struct hexagon_vdso *vdso = current->mm->context.vdso;
 
-	frame = get_sigframe(ka, regs, sizeof(struct rt_sigframe));
+	frame = get_sigframe(ksig, regs, sizeof(struct rt_sigframe));
 
 	if (!access_ok(VERIFY_WRITE, frame, sizeof(struct rt_sigframe)))
-		goto	sigsegv;
+		return -EFAULT;
 
-	if (copy_siginfo_to_user(&frame->info, info))
-		goto	sigsegv;
+	if (copy_siginfo_to_user(&frame->info, &ksig->info))
+		return -EFAULT;
 
 	/* The on-stack signal trampoline is no longer executed;
 	 * however, the libgcc signal frame unwinding code checks for
@@ -137,29 +129,26 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info,
 	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
 	err |= __save_altstack(&frame->uc.uc_stack, user_stack_pointer(regs));
 	if (err)
-		goto sigsegv;
+		return -EFAULT;
 
 	/* Load r0/r1 pair with signumber/siginfo pointer... */
 	regs->r0100 = ((unsigned long long)((unsigned long)&frame->info) << 32)
-		| (unsigned long long)signr;
+		| (unsigned long long)ksig->sig;
 	regs->r02 = (unsigned long) &frame->uc;
 	regs->r31 = (unsigned long) vdso->rt_signal_trampoline;
 	pt_psp(regs) = (unsigned long) frame;
-	pt_set_elr(regs, (unsigned long)ka->sa.sa_handler);
+	pt_set_elr(regs, (unsigned long)ksig->ka.sa.sa_handler);
 
 	return 0;
-
-sigsegv:
-	force_sigsegv(signr, current);
-	return -EFAULT;
 }
 
 /*
  * Setup invocation of signal handler
  */
-static void handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
-			 struct pt_regs *regs)
+static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)
 {
+	int ret;
+
 	/*
 	 * If we're handling a signal that aborted a system call,
 	 * set up the error return value before adding the signal
@@ -173,7 +162,7 @@ static void handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
 			regs->r00 = -EINTR;
 			break;
 		case -ERESTARTSYS:
-			if (!(ka->sa.sa_flags & SA_RESTART)) {
+			if (!(ksig->ka.sa.sa_flags & SA_RESTART)) {
 				regs->r00 = -EINTR;
 				break;
 			}
@@ -193,11 +182,9 @@ static void handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
 	 * only set up the rt_frame flavor.
 	 */
 	/* If there was an error on setup, no signal was delivered. */
-	if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs) < 0)
-		return;
+	ret = setup_rt_frame(ksig, sigmask_to_save(), regs);
 
-	signal_delivered(sig, info, ka, regs,
-			test_thread_flag(TIF_SINGLESTEP));
+	signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP));
 }
 
 /*
@@ -205,17 +192,13 @@ static void handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
  */
 void do_signal(struct pt_regs *regs)
 {
-	struct k_sigaction sigact;
-	siginfo_t info;
-	int signo;
+	struct ksignal ksig;
 
 	if (!user_mode(regs))
 		return;
 
-	signo = get_signal_to_deliver(&info, &sigact, regs, NULL);
-
-	if (signo > 0) {
-		handle_signal(signo, &info, &sigact, regs);
+	if (get_signal(&ksig)) {
+		handle_signal(&ksig, regs);
 		return;
 	}
 
diff --git a/arch/hexagon/mm/cache.c b/arch/hexagon/mm/cache.c
index fe14ccf28561..0c76c802e31c 100644
--- a/arch/hexagon/mm/cache.c
+++ b/arch/hexagon/mm/cache.c
@@ -68,6 +68,7 @@ void flush_icache_range(unsigned long start, unsigned long end)
 	);
 	local_irq_restore(flags);
 }
+EXPORT_SYMBOL(flush_icache_range);
 
 void hexagon_clean_dcache_range(unsigned long start, unsigned long end)
 {