linux-kernel - Re: [ANNOUNCE] 2.6.31-rc7-rt8

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Date:	Thu, 27 Aug 2009 14:03:05 +0300
From:	Kevin Hilman <khilman@...prootsystems.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	rt-users <linux-rt-users@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Steven Rostedt <rostedt@...dmis.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Carsten Emde <ce@...g.ch>,
	Clark Williams <williams@...hat.com>,
	Frank Rowand <frank.rowand@...sony.com>,
	Robin Gareus <robin@...eus.org>,
	Gregory Haskins <ghaskins@...ell.com>,
	Philippe Reynes <philippe.reynes@...smpp.fr>,
	Fernando Lopez-Lezcano <nando@...ma.Stanford.EDU>,
	Will Schmidt <will_schmidt@...t.ibm.com>,
	Darren Hart <dvhltc@...ibm.com>, Jan Blunck <jblunck@...e.de>,
	Sven-Thorsten Dietrich <sdietrich@...ell.com>,
	Jon Masters <jcm@...hat.com>,
	Mark Knecht <markknecht@...il.com>
Subject: Re: [ANNOUNCE] 2.6.31-rc7-rt8

Thomas Gleixner <tglx@...utronix.de> writes:

> We are pleased to announce the next update to our new preempt-rt
> series.
>  
>     - update to Linus' latest
>  
>     - perf counter crash fix (peterz)
>     
>     - disabled MARKERS on RT. Code with no use(rs) which just causes
>       trouble.
>
>     - edge irq forced threading fix. Fixes the IDE "interrupt lost"
>       reports
>

Hi Thomas,

Here's one more atomic_spin_lock conversion for a driver update
that went in for -rc7.

Kevin

>From 4faf27a4c0ceaddd7cb13f5d11928babc9c4cddc Mon Sep 17 00:00:00 2001
From: Kevin Hilman <khilman@...prootsystems.com>
Date: Thu, 27 Aug 2009 13:51:47 +0300
Subject: [PATCH -rt] MFD: twl4030: convert irq_desc lock to atomic spinlock

Signed-off-by: Kevin Hilman <khilman@...prootsystems.com>
---
 drivers/mfd/twl4030-irq.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mfd/twl4030-irq.c b/drivers/mfd/twl4030-irq.c
index 7d43083..c1bc157 100644
--- a/drivers/mfd/twl4030-irq.c
+++ b/drivers/mfd/twl4030-irq.c
@@ -458,12 +458,12 @@ static void twl4030_sih_do_edge(struct work_struct *work)
 
 		bytes[byte] &= ~(0x03 << off);
 
-		spin_lock_irq(&d->lock);
+		atomic_spin_lock_irq(&d->lock);
 		if (d->status & IRQ_TYPE_EDGE_RISING)
 			bytes[byte] |= BIT(off + 1);
 		if (d->status & IRQ_TYPE_EDGE_FALLING)
 			bytes[byte] |= BIT(off + 0);
-		spin_unlock_irq(&d->lock);
+		atomic_spin_unlock_irq(&d->lock);
 
 		edge_change &= ~BIT(i);
 	}
-- 
1.6.4

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