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Commit 57fe1b26 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

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: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 304987e3

arch/s390/kernel/irq.c

+2 −1
Original line number Original line Diff line number Diff line
@@ -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();