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x86: uv io-apic - use BUILD_BUG_ON instead of BUG_ON

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The expression is known to be true/false at compilation
time so we're allowed to use build-time instead of
run-time check. Also align 'entry' items assignment.

[ Impact: shrink kernel a bit, cleanup ]

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Jack Steiner <steiner@sgi.com>
LKML-Reference: <20090502093956.GB4791@lenovo>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Cyrill Gorcunov 2009-05-02 13:39:56 +04:00 committed by Ingo Molnar
parent 6f0aced639
commit 1cbac972ba
1 changed files with 11 additions and 11 deletions
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22
arch/x86/kernel/apic/io_apic.c
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@ -3749,6 +3749,8 @@ int arch_enable_uv_irq(char *irq_name, unsigned int irq, int cpu, int mmr_blade,
unsigned long flags;
int err;
BUILD_BUG_ON(sizeof(struct uv_IO_APIC_route_entry) != sizeof(unsigned long));
cfg = irq_cfg(irq);
err = assign_irq_vector(irq, cfg, eligible_cpu);
@ -3762,15 +3764,13 @@ int arch_enable_uv_irq(char *irq_name, unsigned int irq, int cpu, int mmr_blade,
mmr_value = 0;
entry = (struct uv_IO_APIC_route_entry *)&mmr_value;
BUG_ON(sizeof(struct uv_IO_APIC_route_entry) != sizeof(unsigned long));
entry->vector = cfg->vector;
entry->delivery_mode = apic->irq_delivery_mode;
entry->dest_mode = apic->irq_dest_mode;
entry->polarity = 0;
entry->trigger = 0;
entry->mask = 0;
entry->dest = apic->cpu_mask_to_apicid(eligible_cpu);
entry->vector = cfg->vector;
entry->delivery_mode = apic->irq_delivery_mode;
entry->dest_mode = apic->irq_dest_mode;
entry->polarity = 0;
entry->trigger = 0;
entry->mask = 0;
entry->dest = apic->cpu_mask_to_apicid(eligible_cpu);
mmr_pnode = uv_blade_to_pnode(mmr_blade);
uv_write_global_mmr64(mmr_pnode, mmr_offset, mmr_value);
@ -3788,10 +3788,10 @@ void arch_disable_uv_irq(int mmr_blade, unsigned long mmr_offset)
struct uv_IO_APIC_route_entry *entry;
int mmr_pnode;
BUILD_BUG_ON(sizeof(struct uv_IO_APIC_route_entry) != sizeof(unsigned long));
mmr_value = 0;
entry = (struct uv_IO_APIC_route_entry *)&mmr_value;
BUG_ON(sizeof(struct uv_IO_APIC_route_entry) != sizeof(unsigned long));
entry->mask = 1;
mmr_pnode = uv_blade_to_pnode(mmr_blade);