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| author |   Akinobu Mita <akinobu.mita@gmail.com> | 2008-04-19 23:55:13 +0900 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-04-26 17:35:47 +0200 |
| commit | a1a33fa315b8a5a390f1132681485209500ff5b5 (patch) | |
| tree | b61888d030a7c5becc4b2b8bb6e93b9527d04b74 /arch/x86/kernel/mpparse.c | |
| parent | x86: use MP_intsrc_info() (diff) | |
| download | linux-dev-a1a33fa315b8a5a390f1132681485209500ff5b5.tar.xz linux-dev-a1a33fa315b8a5a390f1132681485209500ff5b5.zip | |
x86: use bitmap library for pin_programmed
Use bitmap library for pin_programmed rather than reinvent
bitmaps.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/mpparse.c')
| -rw-r--r-- | arch/x86/kernel/mpparse.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c index 534790b6d0f1..23e8432a9826 100644 --- a/arch/x86/kernel/mpparse.c +++ b/arch/x86/kernel/mpparse.c @@ -799,7 +799,6 @@ void __init find_smp_config(void) #ifdef CONFIG_X86_IO_APIC #define MP_ISA_BUS 0 -#define MP_MAX_IOAPIC_PIN 127 extern struct mp_ioapic_routing mp_ioapic_routing[MAX_IO_APICS]; @@ -982,9 +981,8 @@ void __init mp_config_acpi_legacy_irqs(void) int mp_register_gsi(u32 gsi, int triggering, int polarity) { - int ioapic = -1; - int ioapic_pin = 0; - int idx, bit = 0; + int ioapic; + int ioapic_pin; #ifdef CONFIG_X86_32 #define MAX_GSI_NUM 4096 #define IRQ_COMPRESSION_START 64 @@ -1024,15 +1022,13 @@ int mp_register_gsi(u32 gsi, int triggering, int polarity) * with redundant pin->gsi mappings (but unique PCI devices); * we only program the IOAPIC on the first. */ - bit = ioapic_pin % 32; - idx = (ioapic_pin < 32) ? 0 : (ioapic_pin / 32); - if (idx > 3) { + if (ioapic_pin > MP_MAX_IOAPIC_PIN) { printk(KERN_ERR "Invalid reference to IOAPIC pin " "%d-%d\n", mp_ioapic_routing[ioapic].apic_id, ioapic_pin); return gsi; } - if ((1 << bit) & mp_ioapic_routing[ioapic].pin_programmed[idx]) { + if (test_bit(ioapic_pin, mp_ioapic_routing[ioapic].pin_programmed)) { Dprintk(KERN_DEBUG "Pin %d-%d already programmed\n", mp_ioapic_routing[ioapic].apic_id, ioapic_pin); #ifdef CONFIG_X86_32 @@ -1042,7 +1038,7 @@ int mp_register_gsi(u32 gsi, int triggering, int polarity) #endif } - mp_ioapic_routing[ioapic].pin_programmed[idx] |= (1 << bit); + set_bit(ioapic_pin, mp_ioapic_routing[ioapic].pin_programmed); #ifdef CONFIG_X86_32 /* * For GSI >= 64, use IRQ compression |