Re: [PATCH 6/9] virtio_mmio: Cast &resources[1].start to ‘unsigned int *’ to rid compiler warning

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Lee Jones <lee.jones@xxxxxxxxxx> writes:
> drivers/virtio/virtio_mmio.c: In function ‘vm_cmdline_set’:
> drivers/virtio/virtio_mmio.c:535:4: warning: format ‘%u’ expects argument of type ‘unsigned int *’, but argument 4 has type ‘resource_size_t *’ [-Wformat]
>
> Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
> Cc: virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
> ---
>  drivers/virtio/virtio_mmio.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
> index 6b1b7e1..077e9ca 100644
> --- a/drivers/virtio/virtio_mmio.c
> +++ b/drivers/virtio/virtio_mmio.c
> @@ -531,7 +531,7 @@ static int vm_cmdline_set(const char *device,
>  	resources[0].end = memparse(device, &str) - 1;
>  
>  	processed = sscanf(str, "@%lli:%u%n:%d%n",
> -			&base, &resources[1].start, &consumed,
> +			&base, (unsigned int *)&resources[1].start, &consumed,
>  			&vm_cmdline_id, &consumed);

This suppresses a valid warning, leaving our code no less wrong than
before.  But now it's silently wrong!

Do you want to try again?

Cheers,
Rusty.
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