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| author | Jianmin Lv <lvjianmin@loongson.cn> | 2022-10-22 15:59:53 +0800 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-11-26 13:05:38 +0000 |
| commit | c7c00138015975c8f0e268564249cc47d8de632c (patch) | |
| tree | 20c42d71eecd5e24e11c8dbe57d625275cac58cf /drivers/irqchip | |
| parent | d0c50cc4b957b2cf6e43cec4998d212b5abe9220 (diff) | |
| download | linux-c7c00138015975c8f0e268564249cc47d8de632c.tar.bz2 | |
irqchip/loongson-pch-pic: Fix translate callback for DT path
In DT path of translate callback, if fwspec->param_count==1
and of_node is non-null, fwspec->param[1] will be accessed,
which is introduced from previous commit bcdd75c596c8
(irqchip/loongson-pch-pic: Add ACPI init support).
Before the patch, for non-null of_node, translate callback
(use irq_domain_translate_twocell()) will return -EINVAL if
fwspec->param_count < 2, so the check in the patch is added.
Fixes: bcdd75c596c8 ("irqchip/loongson-pch-pic: Add ACPI init support")
Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221022075955.11726-3-lvjianmin@loongson.cn
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-loongson-pch-pic.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-loongson-pch-pic.c b/drivers/irqchip/irq-loongson-pch-pic.c index c01b9c257005..03493cda65a3 100644 --- a/drivers/irqchip/irq-loongson-pch-pic.c +++ b/drivers/irqchip/irq-loongson-pch-pic.c @@ -159,6 +159,9 @@ static int pch_pic_domain_translate(struct irq_domain *d, return -EINVAL; if (of_node) { + if (fwspec->param_count < 2) + return -EINVAL; + *hwirq = fwspec->param[0] + priv->ht_vec_base; *type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK; } else { |