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powerpc/mpic: Fix irq distribution problem when MPIC_SINGLE_DEST_CPU

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For the mpic with a flag MPIC_SINGLE_DEST_CPU, only one bit should be
set in interrupt destination registers.

The code is applicable to 64-bit platforms as well as 32-bit.

Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
chenhui zhao
2013-05-27 21:59:43 +00:00
committed by Benjamin Herrenschmidt
parent 2b3f8e87cf
commit e242114aff
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/sysdev/mpic.c
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@@ -54,7 +54,7 @@ static DEFINE_RAW_SPINLOCK(mpic_lock);
#ifdef CONFIG_PPC32 /* XXX for now */ #ifdef CONFIG_PPC32 /* XXX for now */
#ifdef CONFIG_IRQ_ALL_CPUS #ifdef CONFIG_IRQ_ALL_CPUS
#define distribute_irqs (!(mpic->flags & MPIC_SINGLE_DEST_CPU)) #define distribute_irqs (1)
#else #else
#define distribute_irqs (0) #define distribute_irqs (0)
#endif #endif
@@ -1703,7 +1703,7 @@ void mpic_setup_this_cpu(void)
* it differently, then we should make sure we also change the default * it differently, then we should make sure we also change the default
* values of irq_desc[].affinity in irq.c. * values of irq_desc[].affinity in irq.c.
*/ */
if (distribute_irqs) { if (distribute_irqs && !(mpic->flags & MPIC_SINGLE_DEST_CPU)) {
for (i = 0; i < mpic->num_sources ; i++) for (i = 0; i < mpic->num_sources ; i++)
mpic_irq_write(i, MPIC_INFO(IRQ_DESTINATION), mpic_irq_write(i, MPIC_INFO(IRQ_DESTINATION),
mpic_irq_read(i, MPIC_INFO(IRQ_DESTINATION)) | msk); mpic_irq_read(i, MPIC_INFO(IRQ_DESTINATION)) | msk);