[PATCH RT 1/2] genirq: Fix pointer cast warning for randomness on 32-bit architectures

From: Ben Hutchings
Date: Thu Sep 29 2016 - 13:00:55 EST


gcc warns about casting directly from a 32-bit pointer to u64. In the
current rt patch series we cast to unsigned long to avoid the warning,
but this fix hasn't been backported to all versions.

Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Cc: <stable-rt@xxxxxxxxxxxxxxx> # 3.2
---
kernel/irq/manage.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index c4677795d7c8..b1683ba80c88 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -897,7 +897,8 @@ static int irq_thread(void *data)
#ifdef CONFIG_PREEMPT_RT_FULL
migrate_disable();
add_interrupt_randomness(action->irq, 0,
- desc->random_ip ^ (u64) action);
+ desc->random_ip ^
+ (unsigned long) action);
migrate_enable();
#endif
}

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