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| author | Stephen Rothwell <sfr@canb.auug.org.au> | 2006-04-04 14:49:48 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2006-04-04 14:49:48 +1000 |
| commit | 7d01c880856bae31502095bc68784c1518a680cb (patch) | |
| tree | 8bc0a1b072d9fdf2bc15288e7ce712ff636a7cf8 /arch/powerpc/platforms/iseries/setup.c | |
| parent | 6246b6128bbe34d0752f119cf7c5111c85fe481d (diff) | |
| download | linux-7d01c880856bae31502095bc68784c1518a680cb.tar.gz | |
powerpc: iSeries has only 256 IRQs
The iSeries Hypervisor only allows us to specify IRQ numbers up to 255 (it
has a u8 field to pass it in). This patch allows platforms to specify a
maximum to the virtual IRQ numbers we will use and has iSeries set that
to 255. If not set, the maximum is NR_IRQS - 1 (as before).
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Diffstat (limited to 'arch/powerpc/platforms/iseries/setup.c')
| -rw-r--r-- | arch/powerpc/platforms/iseries/setup.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c index 6ce8a404ba6b2..a6fd9bedb0741 100644 --- a/arch/powerpc/platforms/iseries/setup.c +++ b/arch/powerpc/platforms/iseries/setup.c @@ -54,6 +54,7 @@ #include <asm/iseries/hv_lp_event.h> #include <asm/iseries/lpar_map.h> #include <asm/udbg.h> +#include <asm/irq.h> #include "naca.h" #include "setup.h" @@ -684,6 +685,12 @@ static int __init iseries_probe(void) powerpc_firmware_features |= FW_FEATURE_ISERIES; powerpc_firmware_features |= FW_FEATURE_LPAR; + /* + * The Hypervisor only allows us up to 256 interrupt + * sources (the irq number is passed in a u8). + */ + virt_irq_max = 255; + return 1; } |