linux-kernel - [PATCH 02/20] c6x: Do not call do

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Date:	Sat, 26 May 2012 00:04:18 +0200
From:	Richard Weinberger <richard@....at>
To:	linux-kernel@...r.kernel.org
Cc:	linux-arch@...r.kernel.org, Richard Weinberger <richard@....at>,
	Mark Salter <msalter@...hat.com>,
	Aurelien Jacquiot <a-jacquiot@...com>,
	linux-c6x-dev@...ux-c6x.org
Subject: [PATCH 02/20] c6x: Do not call do_signal() with irqs disabled

get_signal_to_deliver() calls try_to_freeze() which might sleep.

Cc: Mark Salter <msalter@...hat.com>
Cc: Aurelien Jacquiot <a-jacquiot@...com>
Cc: linux-c6x-dev@...ux-c6x.org
Signed-off-by: Richard Weinberger <richard@....at>
---
 arch/c6x/kernel/signal.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/c6x/kernel/signal.c b/arch/c6x/kernel/signal.c
index cf37478..80e91bf 100644
--- a/arch/c6x/kernel/signal.c
+++ b/arch/c6x/kernel/signal.c
@@ -15,6 +15,7 @@
 #include <linux/uaccess.h>
 #include <linux/syscalls.h>
 #include <linux/tracehook.h>
+#include <linux/irqflags.h>
 
 #include <asm/ucontext.h>
 #include <asm/cacheflush.h>
@@ -356,6 +357,8 @@ static void do_signal(struct pt_regs *regs, int syscall)
 asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags,
 				 int syscall)
 {
+	local_irq_enable();
+
 	/* deal with pending signal delivery */
 	if (thread_info_flags & ((1 << TIF_SIGPENDING) |
 				 (1 << TIF_RESTORE_SIGMASK)))
-- 
1.7.7.3

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