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powerpc/qe: Convert qe_ic_lock to raw_spinlock

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Interrupt controllers' hooks are executed in the atomic context, so
they are not permitted to sleep (with RT kernels non-raw spinlocks are
sleepable). So, qe_ic_lock has to be a real (non-sleepable) spinlock.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Anton Vorontsov 2010-02-18 16:43:12 +03:00 committed by Kumar Gala
parent 0e5d359cca
commit 43a5a01bcc
1 changed files with 5 additions and 5 deletions
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10
arch/powerpc/sysdev/qe_lib/qe_ic.c
View file

@ -33,7 +33,7 @@
#include "qe_ic.h"
static DEFINE_SPINLOCK(qe_ic_lock);
static DEFINE_RAW_SPINLOCK(qe_ic_lock);
static struct qe_ic_info qe_ic_info[] = {
[1] = {
@ -201,13 +201,13 @@ static void qe_ic_unmask_irq(unsigned int virq)
unsigned long flags;
u32 temp;
spin_lock_irqsave(&qe_ic_lock, flags);
raw_spin_lock_irqsave(&qe_ic_lock, flags);
temp = qe_ic_read(qe_ic->regs, qe_ic_info[src].mask_reg);
qe_ic_write(qe_ic->regs, qe_ic_info[src].mask_reg,
temp | qe_ic_info[src].mask);
spin_unlock_irqrestore(&qe_ic_lock, flags);
raw_spin_unlock_irqrestore(&qe_ic_lock, flags);
}
static void qe_ic_mask_irq(unsigned int virq)
@ -217,7 +217,7 @@ static void qe_ic_mask_irq(unsigned int virq)
unsigned long flags;
u32 temp;
spin_lock_irqsave(&qe_ic_lock, flags);
raw_spin_lock_irqsave(&qe_ic_lock, flags);
temp = qe_ic_read(qe_ic->regs, qe_ic_info[src].mask_reg);
qe_ic_write(qe_ic->regs, qe_ic_info[src].mask_reg,
@ -233,7 +233,7 @@ static void qe_ic_mask_irq(unsigned int virq)
*/
mb();
spin_unlock_irqrestore(&qe_ic_lock, flags);
raw_spin_unlock_irqrestore(&qe_ic_lock, flags);
}
static struct irq_chip qe_ic_irq_chip = {