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authorKyle Moffett <Kyle.D.Moffett@boeing.com>2011-12-22 14:19:12 +0400
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-02-23 03:49:59 +0400
commit5019609fce965dbdc66a7d947385fe92ca522231 (patch)
tree00678069c54aa7dbdf7ce32b927844957ead65f5 /arch/powerpc/platforms/86xx
parent9ca163c8602681ad098910f48f89b97f0cb87c4f (diff)
downloadlinux-5019609fce965dbdc66a7d947385fe92ca522231.tar.xz
powerpc/mpic: Remove MPIC_BROKEN_FRR_NIRQS and duplicate irq_count
The mpic->irq_count variable is only used as a software error-checking limit to determine whether or not an IRQ number is valid. In board code which does not manually specify an IRQ count to mpic_alloc(), i.e. 0, it is automatically detected from the number of ISUs and the ISU size. In practice, all hardware ends up with irq_count == num_sources, so all of the runtime checks on mpic->irq_count should just check the value of mpic->num_sources instead. When platform hardware does not correctly report the number of IRQs, which only happens on the MPC85xx/MPC86xx, the MPIC_BROKEN_FRR_NIRQS flag is used to override the detected value of num_sources with the manual irq_count parameter. Since there's no need to manually specify the number of IRQs except in this case, the extra flag can be eliminated and the test changed to "irq_count != 0". Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/86xx')
-rw-r--r--arch/powerpc/platforms/86xx/pic.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/86xx/pic.c b/arch/powerpc/platforms/86xx/pic.c
index 52bbfa031531..27959d63a079 100644
--- a/arch/powerpc/platforms/86xx/pic.c
+++ b/arch/powerpc/platforms/86xx/pic.c
@@ -39,7 +39,7 @@ void __init mpc86xx_init_irq(void)
struct mpic *mpic = mpic_alloc(NULL, 0,
MPIC_WANTS_RESET | MPIC_BIG_ENDIAN |
- MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU,
+ MPIC_SINGLE_DEST_CPU,
0, 256, " MPIC ");
BUG_ON(mpic == NULL);