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hw/intc/loongarch_pch_pic: Fix bugs for update_irq function

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Fix such errors:
1. We should not use 'unsigned long' type as argument when we use
find_first_bit(), and we use ctz64() to replace find_first_bit()
to fix this bug.
2. It is not standard to use '1ULL << irq' to generate a irq mask.
So, we replace it with 'MAKE_64BIT_MASK(irq, 1)'.

Fix coverity CID: 1489761 1489764 1489765

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Message-Id: <20220715060740.1500628-3-yangxiaojuan@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Xiaojuan Yang 2022-07-15 14:07:37 +08:00 committed by Richard Henderson
parent c254f7affe
commit 056dac5384
1 changed files with 5 additions and 5 deletions
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10
hw/intc/loongarch_pch_pic.c
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@ -15,21 +15,21 @@
static void pch_pic_update_irq(LoongArchPCHPIC *s, uint64_t mask, int level)
{
unsigned long val;
uint64_t val;
int irq;
if (level) {
val = mask & s->intirr & ~s->int_mask;
if (val) {
irq = find_first_bit(&val, 64);
s->intisr |= 0x1ULL << irq;
irq = ctz64(val);
s->intisr |= MAKE_64BIT_MASK(irq, 1);
qemu_set_irq(s->parent_irq[s->htmsi_vector[irq]], 1);
}
} else {
val = mask & s->intisr;
if (val) {
irq = find_first_bit(&val, 64);
s->intisr &= ~(0x1ULL << irq);
irq = ctz64(val);
s->intisr &= ~MAKE_64BIT_MASK(irq, 1);
qemu_set_irq(s->parent_irq[s->htmsi_vector[irq]], 0);
}
}