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lib: utils/irqchip: plic: Ensure no out-of-bound access in priority save/restore helpers

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Currently the priority save/restore helpers writes/reads the provided
array using an index whose maximum value is determined by PLIC, which
potentially may disagree with the caller to these helpers.

Add a parameter to ask the caller to provide the size limit of the
array to ensure no out-of-bound access happens.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Bin Meng
2022-12-11 14:54:21 +08:00
committed by Anup Patel
parent 34da6638ad
commit 8509e46ca6
5 changed files with 26 additions and 14 deletions
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4
platform/generic/allwinner/sun20i-d1.c
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@@ -79,13 +79,13 @@ static u32 plic_threshold;
static void sun20i_d1_plic_save(void)
{
fdt_plic_context_save(true, plic_sie, &plic_threshold);
fdt_plic_priority_save(plic_priority);
fdt_plic_priority_save(plic_priority, PLIC_SOURCES);
}
static void sun20i_d1_plic_restore(void)
{
thead_plic_restore();
fdt_plic_priority_restore(plic_priority);
fdt_plic_priority_restore(plic_priority, PLIC_SOURCES);
fdt_plic_context_restore(true, plic_sie, plic_threshold);
}