Re: [PATCH] hw/i386/xen: Remove dead code

[Paolo Bonzini]

On 02/02/21 16:56, Philippe Mathieu-Daudé wrote:
> 'drivers_blacklisted' is never accessed, remove it.
>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
>   hw/i386/xen/xen_platform.c | 13 ++-----------
>   1 file changed, 2 insertions(+), 11 deletions(-)
>
> diff --git a/hw/i386/xen/xen_platform.c b/hw/i386/xen/xen_platform.c
> index 7c4db35debb..01ae1fb1618 100644
> --- a/hw/i386/xen/xen_platform.c
> +++ b/hw/i386/xen/xen_platform.c
> @@ -60,7 +60,6 @@ struct PCIXenPlatformState {
>       MemoryRegion bar;
>       MemoryRegion mmio_bar;
>       uint8_t flags; /* used only for version_id == 2 */
> -    int drivers_blacklisted;
>       uint16_t driver_product_version;
>   
>       /* Log from guest drivers */
> @@ -245,18 +244,10 @@ static void platform_fixed_ioport_writeb(void *opaque, 
> uint32_t addr, uint32_t v
>   
>   static uint32_t platform_fixed_ioport_readw(void *opaque, uint32_t addr)
>   {
> -    PCIXenPlatformState *s = opaque;
> -
>       switch (addr) {
>       case 0:
> -        if (s->drivers_blacklisted) {
> -            /* The drivers will recognise this magic number and refuse
> -             * to do anything. */
> -            return 0xd249;
> -        } else {
> -            /* Magic value so that you can identify the interface. */
> -            return 0x49d2;
> -        }
> +        /* Magic value so that you can identify the interface. */
> +        return 0x49d2;
>       default:
>           return 0xffff;
>       }

Cc: qemu-trivial@nongnu.org