Re: [PATCH] hw/i386/pc_piix.c: remove unnecessary if() from pc_init1()

[Mark Cave-Ayland <mark.caveayland@nutanix.com>]

On 01/09/2025 14:36, Philippe Mathieu-Daudé wrote:

> On 1/9/25 15:24, Mark Cave-Ayland wrote:
>> Now that the isapc logic has been split out of pc_piix.c, the PCI Host 
>> Bridge
>> (phb) object is now always set in pc_init1().
>>
>> Since phb is now guaranteed not to be NULL, Coverity reports that the 
>> if()
>> statement surrounding ioapic_init_gsi() is now unnecessary and can be 
>> removed
>> (CID 1620557).
>>
>> Signed-off-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
>> Fixes: 99d0630a45 ("hw/i386/pc_piix.c: assume pcmc->pci_enabled is 
>> always true in pc_init1()")
>> ---
>>   hw/i386/pc_piix.c | 4 +---
>>   1 file changed, 1 insertion(+), 3 deletions(-)
>>
>> diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
>> index 7e78b6daa6..b6d0cf411d 100644
>> --- a/hw/i386/pc_piix.c
>> +++ b/hw/i386/pc_piix.c
>> @@ -284,9 +284,7 @@ static void pc_init1(MachineState *machine, const 
>> char *pci_type)
> 
> Maybe also remove the pointless NULL-init?

Yeah that's a good point: I've just sent a v2 that also removes this, so 
maintainers can choose which version they prefer :)

>    -    Object *phb = NULL;
>    +    Object *phb;
> 
>>           pc_i8259_create(isa_bus, gsi_state->i8259_irq);
>>       }
>> -    if (phb) {
>> -        ioapic_init_gsi(gsi_state, phb);
>> -    }
>> +    ioapic_init_gsi(gsi_state, phb);
>>       if (tcg_enabled()) {
>>           x86_register_ferr_irq(x86ms->gsi[13]);
> 
> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>


ATB,

Mark.