Commit 9cc7c400 authored by Xu Qiang's avatar Xu Qiang Committed by Jian Zhang
Browse files

irq-gic-v3: Fix too large cpu_count 

ascend inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I612UG


CVE: NA

--------------------------------

Fix that value of CPU is too large in its_inc_lpi_count.

Signed-off-by: default avatarXu Qiang <xuqiang36@huawei.com>
parent 32c81f1b

drivers/irqchip/irq-gic-v3-its.c

+10 −0
Original line number Diff line number Diff line
@@ -1543,6 +1543,11 @@ static __maybe_unused u32 its_read_lpi_count(struct irq_data *d, int cpu) 


static void its_inc_lpi_count(struct irq_data *d, int cpu)

{

#ifdef CONFIG_ASCEND_INIT_ALL_GICR

	if (cpu >= nr_cpu_ids)

		return;

#endif



	if (irqd_affinity_is_managed(d))

		atomic_inc(&per_cpu_ptr(&cpu_lpi_count, cpu)->managed);

	else
@@ -1551,6 +1556,11 @@ static void its_inc_lpi_count(struct irq_data *d, int cpu) 


static void its_dec_lpi_count(struct irq_data *d, int cpu)

{

#ifdef CONFIG_ASCEND_INIT_ALL_GICR

	if (cpu >= nr_cpu_ids)

		return;

#endif



	if (irqd_affinity_is_managed(d))

		atomic_dec(&per_cpu_ptr(&cpu_lpi_count, cpu)->managed);

	else