Re: [Xen-devel] [Qemu-devel] [PATCH 4/8] xen: Remove useless casts

[Philippe Mathieu-Daudé <f4bug@xxxxxxxxx>]

On 07/05/2018 07:16 AM, Peter Maydell wrote:
> On 4 July 2018 at 16:39, Philippe Mathieu-Daudé <f4bug@xxxxxxxxx> wrote:
>> Patch created mechanically by rerunning:
>>
>>   $  spatch --sp-file scripts/coccinelle/typecast.cocci \
>>             --macro-file scripts/cocci-macro-file.h \
>>             --dir . --in-place
>>
>> Signed-off-by: Philippe Mathieu-Daudé <f4bug@xxxxxxxxx>
>> ---
>>  hw/xen/xen_pt_config_init.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c
>> index aee31c62bb..55a83333f2 100644
>> --- a/hw/xen/xen_pt_config_init.c
>> +++ b/hw/xen/xen_pt_config_init.c
>> @@ -543,7 +543,7 @@ static int 
>> xen_pt_exp_rom_bar_reg_write(XenPCIPassthroughState *s,
>>  {
>>      XenPTRegInfo *reg = cfg_entry->reg;
>>      XenPTRegion *base = NULL;
>> -    PCIDevice *d = (PCIDevice *)&s->dev;
>> +    PCIDevice *d = &s->dev;
> 
> This line of code is odd even without the cast. XenPCIPassthroughState*
> is a QOM object (TYPE_XEN_PT_DEVICE) which is a subclass of TYPE_PCI_DEVICE,
> so the standard way to get the PCIDevice pointer for s would be
>   PCIDevice *d = PCI_DEVICE(s);

You have eagle eyes...

Thanks for your review :)

Phil.

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