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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2008-01-28 05:16:37 -0500
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-01-28 05:17:12 -0500
commit193c3cc12583344be01206078d9ad3fec5dbc397 (patch)
tree97eb5d6ec88969d21fbf0c5815e3b77e8e1f4aaf /arch/arm/mach-h720x/cpu-h7202.c
parent6232be32afa121628c72291ce7eaa24a639905c2 (diff)
[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-h720x/cpu-h7202.c')
-rw-r--r--arch/arm/mach-h720x/cpu-h7202.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/arm/mach-h720x/cpu-h7202.c b/arch/arm/mach-h720x/cpu-h7202.c
index 0a1a25fb8ba8..c627fa124eb3 100644
--- a/arch/arm/mach-h720x/cpu-h7202.c
+++ b/arch/arm/mach-h720x/cpu-h7202.c
@@ -113,9 +113,7 @@ h7202_timerx_demux_handler(unsigned int irq_unused, struct irq_desc *desc)
113 mask = CPU_REG (TIMER_VIRT, TIMER_TOPSTAT); 113 mask = CPU_REG (TIMER_VIRT, TIMER_TOPSTAT);
114 114
115 if ( mask & TSTAT_T0INT ) { 115 if ( mask & TSTAT_T0INT ) {
116 write_seqlock(&xtime_lock);
117 timer_tick(); 116 timer_tick();
118 write_sequnlock(&xtime_lock);
119 if( mask == TSTAT_T0INT ) 117 if( mask == TSTAT_T0INT )
120 return; 118 return;
121 } 119 }