linux-kernel - [PATCH 31/43] blackfin: Use sigsp()

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Message-Id: <1405951409-16953-32-git-send-email-richard@sigma-star.at>
Date:	Mon, 21 Jul 2014 16:03:17 +0200
From:	Richard Weinberger <richard@...ma-star.at>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	Richard Weinberger <richard@....at>, realmz6@...il.com,
	adi-buildroot-devel@...ts.sourceforge.net
Subject: [PATCH 31/43] blackfin: Use sigsp()

From: Richard Weinberger <richard@....at>

Use sigsp() instead of the open coded variant.

Signed-off-by: Richard Weinberger <richard@....at>
---
 arch/blackfin/kernel/signal.c | 14 +++-----------
 1 file changed, 3 insertions(+), 11 deletions(-)

diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c
index 1389cd3..ef27557 100644
--- a/arch/blackfin/kernel/signal.c
+++ b/arch/blackfin/kernel/signal.c
@@ -135,19 +135,11 @@ static inline int rt_setup_sigcontext(struct sigcontext *sc, struct pt_regs *reg
 	return err;
 }
 
-static inline void *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
+static inline void *get_sigframe(struct ksignal *ksig,
 				 size_t frame_size)
 {
-	unsigned long usp;
+	unsigned long usp = sigsp(rdusp(), ksig);
 
-	/* Default to using normal stack.  */
-	usp = rdusp();
-
-	/* This is the X/Open sanctioned signal stack switching.  */
-	if (ka->sa.sa_flags & SA_ONSTACK) {
-		if (!on_sig_stack(usp))
-			usp = current->sas_ss_sp + current->sas_ss_size;
-	}
 	return (void *)((usp - frame_size) & -8UL);
 }
 
@@ -157,7 +149,7 @@ setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
 	struct rt_sigframe *frame;
 	int err = 0;
 
-	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));
+	frame = get_sigframe(ksig, sizeof(*frame));
 
 	err |= __put_user((current_thread_info()->exec_domain
 			   && current_thread_info()->exec_domain->signal_invmap
-- 
1.8.4.5

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