From: Richard Weinberger <richard@nod.at>
Date: Wed, 5 Mar 2014 14:28:59 +0000 (+0100)
Subject: m68k: Use sigsp()
X-Git-Tag: v3.17-rc1~60^2~6
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=36992f2893d224add9a1e4b9114aa04f4640853b;p=karo-tx-linux.git

m68k: Use sigsp()

Use sigsp() instead of the open coded variant.

Signed-off-by: Richard Weinberger <richard@nod.at>
---

diff --git a/arch/m68k/kernel/signal.c b/arch/m68k/kernel/signal.c
index c8e6fa865996..967a8b7e1527 100644
--- a/arch/m68k/kernel/signal.c
+++ b/arch/m68k/kernel/signal.c
@@ -835,18 +835,10 @@ static inline int rt_setup_ucontext(struct ucontext __user *uc, struct pt_regs *
 }
 
 static inline void __user *
-get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
+get_sigframe(struct ksignal *ksig, size_t frame_size)
 {
-	unsigned long usp;
-
-	/* Default to using normal stack.  */
-	usp = rdusp();
+	unsigned long usp = sigsp(rdusp(), ksig);
 
-	/* This is the X/Open sanctioned signal stack switching.  */
-	if (ka->sa.sa_flags & SA_ONSTACK) {
-		if (!sas_ss_flags(usp))
-			usp = current->sas_ss_sp + current->sas_ss_size;
-	}
 	return (void __user *)((usp - frame_size) & -8UL);
 }
 
@@ -866,7 +858,7 @@ static int setup_frame(struct ksignal *ksig, sigset_t *set,
 		return -EFAULT;
 	}
 
-	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame) + fsize);
+	frame = get_sigframe(ksig, sizeof(*frame) + fsize);
 
 	if (fsize)
 		err |= copy_to_user (frame + 1, regs + 1, fsize);
@@ -951,7 +943,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
 		return -EFAULT;
 	}
 
-	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));
+	frame = get_sigframe(ksig, sizeof(*frame));
 
 	if (fsize)
 		err |= copy_to_user (&frame->uc.uc_extra, regs + 1, fsize);