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SubjectRe: build failure of next-20220811 due to d79b32c2e4a4 ("vdpa_sim_blk: add support for discard and write-zeroes")
Hi Sudip,

On Thu, Aug 11, 2022 at 06:22:54PM +0100, Sudip Mukherjee (Codethink) wrote:
>Hi All,
>
>Not sure if it has been reported, builds of arm64 with clang failed to
>build next-20220811 with the error:
>
>drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:201:3: error: expected expression
> struct virtio_blk_discard_write_zeroes range;
> ^
>drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:204:25: error: use of undeclared identifier 'range'
> if (to_pull != sizeof(range)) {
> ^
>drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:207:21: error: use of undeclared identifier 'range'
> to_pull, sizeof(range));
> ^
>drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:212:60: error: use of undeclared identifier 'range'
> bytes = vringh_iov_pull_iotlb(&vq->vring, &vq->out_iov, &range,
> ^
>drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:222:38: error: use of undeclared identifier 'range'
> sector = vdpasim64_to_cpu(vdpasim, range.sector);
> ^
>drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:224:43: error: use of undeclared identifier 'range'
> num_sectors = vdpasim32_to_cpu(vdpasim, range.num_sectors);
> ^
>drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:225:37: error: use of undeclared identifier 'range'
> flags = vdpasim32_to_cpu(vdpasim, range.flags);
> ^
>drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:202:7: error: mixing declarations and code is incompatible with standards before C99 [-Werror,-Wdeclaration-after-statement]
> u32 num_sectors, flags;
> ^
>8 errors generated.
>
>
>git bisect pointed to d79b32c2e4a4 ("vdpa_sim_blk: add support for discard and write-zeroes").
>And, reverting that commit has fixed the build failure.
>
>I will be happy to test any patch or provide any extra log if needed.

Thanks for the report, I already re-sent a new series with that patch
fixed:
https://lore.kernel.org/virtualization/20220811083632.77525-1-sgarzare@redhat.com/T/#t

And it looks like it's already in Michael's tree:
https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next

Thanks,
Stefano

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