linux-kernel - [PATCH] tile: Enable interrupts in do_work

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Message-ID: <201308121956.r7CJugwx010311@farm-0021.internal.tilera.com>
Date:	Mon, 12 Aug 2013 14:57:12 -0400
From:	Chris Metcalf <cmetcalf@...era.com>
To:	<linux-kernel@...r.kernel.org>
Subject: [PATCH] tile: Enable interrupts in do_work_pending()

A recent change triggered a WARN_ON that interrupts were disabled,
and in fact other architectures enable interrupts uniformly for their
related do_work_pending() type code, and all the things we call from
this routine appear to expect interrupts to be enabled.  So, enable them.

Signed-off-by: Chris Metcalf <cmetcalf@...era.com>
---
 arch/tile/kernel/process.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/tile/kernel/process.c b/arch/tile/kernel/process.c
index 2629ff1..9892f03 100644
--- a/arch/tile/kernel/process.c
+++ b/arch/tile/kernel/process.c
@@ -550,6 +550,9 @@ int do_work_pending(struct pt_regs *regs, u32 thread_info_flags)
 	}
 #endif
 
+	/* Enable interrupts; they are disabled again on return to caller. */
+	local_irq_enable();
+
 	if (thread_info_flags & _TIF_NEED_RESCHED) {
 		schedule();
 		return 1;
-- 
1.8.3.1

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