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| author | Kumar Gala <galak@kernel.crashing.org> | 2008-10-28 21:01:39 +0300 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-10-31 08:13:50 +0300 |
| commit | 3c10c9c45e290022ca7d2aa1ad33a0b6ed767520 (patch) | |
| tree | 002769098cd2b53aad995acac3c42f0331302588 /arch/powerpc/platforms | |
| parent | f9226d572d2f8b5f564596db8c6a13e458c46191 (diff) | |
| download | linux-3c10c9c45e290022ca7d2aa1ad33a0b6ed767520.tar.xz | |
powerpc/mpic: Fix regression caused by change of default IRQ affinity
The Freescale implementation of MPIC only allows a single CPU destination
for non-IPI interrupts. We add a flag to the mpic_init to distinquish
these variants of MPIC. We pull in the irq_choose_cpu from sparc64 to
select a single CPU as the destination of the interrupt.
This is to deal with the fact that the default smp affinity was
changed by commit 18404756765c713a0be4eb1082920c04822ce588 ("genirq:
Expose default irq affinity mask (take 3)") to be all CPUs.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/85xx/mpc85xx_ds.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/platforms/86xx/pic.c | 3 |
2 files changed, 4 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ds.c b/arch/powerpc/platforms/85xx/mpc85xx_ds.c index 483b65cbabae..613bf8c2e30d 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_ds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_ds.c @@ -78,7 +78,8 @@ void __init mpc85xx_ds_pic_init(void) mpic = mpic_alloc(np, r.start, MPIC_PRIMARY | MPIC_WANTS_RESET | - MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS, + MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | + MPIC_SINGLE_DEST_CPU, 0, 256, " OpenPIC "); BUG_ON(mpic == NULL); of_node_put(np); diff --git a/arch/powerpc/platforms/86xx/pic.c b/arch/powerpc/platforms/86xx/pic.c index 8881c5de500d..668275d9e668 100644 --- a/arch/powerpc/platforms/86xx/pic.c +++ b/arch/powerpc/platforms/86xx/pic.c @@ -44,7 +44,8 @@ void __init mpc86xx_init_irq(void) mpic = mpic_alloc(np, res.start, MPIC_PRIMARY | MPIC_WANTS_RESET | - MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS, + MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | + MPIC_SINGLE_DEST_CPU, 0, 256, " MPIC "); of_node_put(np); BUG_ON(mpic == NULL); |