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| author | Kyle Moffett <Kyle.D.Moffett@boeing.com> | 2011-12-22 11:19:12 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-02-23 00:49:59 +0100 |
| commit | 5019609fce965dbdc66a7d947385fe92ca522231 (patch) | |
| tree | 00678069c54aa7dbdf7ce32b927844957ead65f5 /arch/powerpc/platforms/86xx | |
| parent | fsl/mpic: Create and document the "single-cpu-affinity" device-tree flag (diff) | |
| download | linux-5019609fce965dbdc66a7d947385fe92ca522231.tar.xz linux-5019609fce965dbdc66a7d947385fe92ca522231.zip | |
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.c | 2 |
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); |