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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2008-01-28 13:16:37 +0300
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-01-28 13:17:12 +0300
commit193c3cc12583344be01206078d9ad3fec5dbc397 (patch)
tree97eb5d6ec88969d21fbf0c5815e3b77e8e1f4aaf /arch/arm/mach-ep93xx
parent6232be32afa121628c72291ce7eaa24a639905c2 (diff)
downloadlinux-193c3cc12583344be01206078d9ad3fec5dbc397.tar.xz
[ARM] Fix timer damage from d3d74453c34f8fd87674a8cf5b8a327c68f22e99
Move the xtime write mode seqlock into timer_tick(), so it only surrounds the call to do_timer(). This avoids a deadlock in update_process_times() ... hrtimer_get_softirq_time() which tries to get a read mode seqlock on xtime, thereby preventing booting. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-ep93xx')
-rw-r--r--arch/arm/mach-ep93xx/core.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index 70b2c7801110..f1074ff02fdb 100644
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -99,8 +99,6 @@ static unsigned int last_jiffy_time;
static int ep93xx_timer_interrupt(int irq, void *dev_id)
{
- write_seqlock(&xtime_lock);
-
__raw_writel(1, EP93XX_TIMER1_CLEAR);
while ((signed long)
(__raw_readl(EP93XX_TIMER4_VALUE_LOW) - last_jiffy_time)
@@ -109,8 +107,6 @@ static int ep93xx_timer_interrupt(int irq, void *dev_id)
timer_tick();
}
- write_sequnlock(&xtime_lock);
-
return IRQ_HANDLED;
}