| Message ID | 20220715060740.1500628-3-yangxiaojuan@loongson.cn (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Fix LoongArch coverity error and cpu name bug | expand |
On 7/15/22 11:37, Xiaojuan Yang wrote: > 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> > --- > hw/intc/loongarch_pch_pic.c | 18 +++++++++++------- > 1 file changed, 11 insertions(+), 7 deletions(-) > > diff --git a/hw/intc/loongarch_pch_pic.c b/hw/intc/loongarch_pch_pic.c > index 3c9814a3b4..8fa64d2030 100644 > --- a/hw/intc/loongarch_pch_pic.c > +++ b/hw/intc/loongarch_pch_pic.c > @@ -15,22 +15,26 @@ > > 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; > - qemu_set_irq(s->parent_irq[s->htmsi_vector[irq]], 1); > + irq = ctz64(val); > + if (irq < 64) { This test is always true, provable by the val != 0 test just above. r~ > + 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); > - qemu_set_irq(s->parent_irq[s->htmsi_vector[irq]], 0); > + irq = ctz64(val); > + if (irq < 64) { > + s->intisr &= ~(MAKE_64BIT_MASK(irq, 1)); > + qemu_set_irq(s->parent_irq[s->htmsi_vector[irq]], 0); > + } > } > } > }
diff --git a/hw/intc/loongarch_pch_pic.c b/hw/intc/loongarch_pch_pic.c index 3c9814a3b4..8fa64d2030 100644 --- a/hw/intc/loongarch_pch_pic.c +++ b/hw/intc/loongarch_pch_pic.c @@ -15,22 +15,26 @@ 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; - qemu_set_irq(s->parent_irq[s->htmsi_vector[irq]], 1); + irq = ctz64(val); + if (irq < 64) { + 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); - qemu_set_irq(s->parent_irq[s->htmsi_vector[irq]], 0); + irq = ctz64(val); + if (irq < 64) { + s->intisr &= ~(MAKE_64BIT_MASK(irq, 1)); + qemu_set_irq(s->parent_irq[s->htmsi_vector[irq]], 0); + } } } }
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> --- hw/intc/loongarch_pch_pic.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-)