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watchdog: Octeon: Mark octeon_wdt interrupt as IRQF_NO_THREAD 

This is to exclude it from force threading to allow RT patch set to work.

The watchdog timers are per-CPU and the addresses of register that reset
the timer are calculated based on the current CPU.  Therefore we cannot
allow it to run on a thread on a different CPU.  Also we only do a
single register write, which is much faster than scheduling a handler
thread.

And while on this line remove IRQF_DISABLED as this flag is a NOP.

Signed-off-by: Venkat Subbiah<venkat.subbiah@cavium.com>
Acked-by: David Daney<david.daney@cavium.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Venkat Subbiah 2011-10-03 17:22:04 -07:00 committed by Wim Van Sebroeck
parent cef153a8d4
commit 47bfd05813
1 changed files with 1 additions and 1 deletions
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2
drivers/watchdog/octeon-wdt-main.c
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@ -402,7 +402,7 @@ static void octeon_wdt_setup_interrupt(int cpu)
irq = OCTEON_IRQ_WDOG0 + core;
if (request_irq(irq, octeon_wdt_poke_irq,
IRQF_DISABLED, "octeon_wdt", octeon_wdt_poke_irq))
IRQF_NO_THREAD, "octeon_wdt", octeon_wdt_poke_irq))
panic("octeon_wdt: Couldn't obtain irq %d", irq);
cpumask_set_cpu(cpu, &irq_enabled_cpus);