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s390/irq: enforce correct irqclass_sub_desc array size 

Add a BUILD_BUG_ON() to enforce that irqclass_sub_desc contains the required
number of defined interrupt descriptions and won't be filled up with zeros.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2015-03-25 08:05:49 +01:00 committed by Martin Schwidefsky
parent 304987e365
commit 57fe1b2639
1 changed files with 2 additions and 1 deletions
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3
arch/s390/kernel/irq.c
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@ -56,7 +56,7 @@ static const struct irq_class irqclass_main_desc[NR_IRQS_BASE] = {
* /proc/interrupts. * /proc/interrupts.
* In addition this list contains non external / I/O events like NMIs. * In addition this list contains non external / I/O events like NMIs.
*/ */
static const struct irq_class irqclass_sub_desc[NR_ARCH_IRQS] = { static const struct irq_class irqclass_sub_desc[] = {
{.irq = IRQEXT_CLK, .name = "CLK", .desc = "[EXT] Clock Comparator"}, {.irq = IRQEXT_CLK, .name = "CLK", .desc = "[EXT] Clock Comparator"},
{.irq = IRQEXT_EXC, .name = "EXC", .desc = "[EXT] External Call"}, {.irq = IRQEXT_EXC, .name = "EXC", .desc = "[EXT] External Call"},
{.irq = IRQEXT_EMS, .name = "EMS", .desc = "[EXT] Emergency Signal"}, {.irq = IRQEXT_EMS, .name = "EMS", .desc = "[EXT] Emergency Signal"},
@ -94,6 +94,7 @@ static const struct irq_class irqclass_sub_desc[NR_ARCH_IRQS] = {
void __init init_IRQ(void) void __init init_IRQ(void)
{ {
BUILD_BUG_ON(ARRAY_SIZE(irqclass_sub_desc) != NR_ARCH_IRQS);
init_cio_interrupts(); init_cio_interrupts();
init_airq_interrupts(); init_airq_interrupts();
init_ext_interrupts(); init_ext_interrupts();