[PATCH] clocksource: em_sti: Set cpu_possible_mask to fix SMP broadcast

Simon Horman horms+renesas at verge.net.au
Wed Sep 18 16:01:16 EDT 2013


From: Magnus Damm <damm at opensource.se>

Update the STI driver by setting cpu_possible_mask to make EMEV2
SMP work as expected together with the ARM broadcast timer.

This breakage was introduced by:

f7db706 ARM: 7674/1: smp: Avoid dummy clockevent being preferred over real hardware clock-event

Without this fix SMP operation is broken on EMEV2 since no
broadcast timer interrupts trigger on the secondary CPU cores.

Signed-off-by: Magnus Damm <damm at opensource.se>
Tested-by: Simon Horman <horms+renesas at verge.net.au>
Reviewed-by: Stephen Boyd <sboyd at codeaurora.org>
Signed-off-by: Simon Horman <horms+renesas at verge.net.au>
---
 drivers/clocksource/em_sti.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clocksource/em_sti.c b/drivers/clocksource/em_sti.c
index b9c81b7..3a5909c 100644
--- a/drivers/clocksource/em_sti.c
+++ b/drivers/clocksource/em_sti.c
@@ -301,7 +301,7 @@ static void em_sti_register_clockevent(struct em_sti_priv *p)
 	ced->name = dev_name(&p->pdev->dev);
 	ced->features = CLOCK_EVT_FEAT_ONESHOT;
 	ced->rating = 200;
-	ced->cpumask = cpumask_of(0);
+	ced->cpumask = cpu_possible_mask;
 	ced->set_next_event = em_sti_clock_event_next;
 	ced->set_mode = em_sti_clock_event_mode;
 
-- 
1.8.4




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