Re: [linux-next:master 14849/15097] drivers/vdpa/vdpa_sim/vdpa_sim_blk.c:201:3: error: expected expression

[Stefano Garzarella <sgarzare@redhat.com>]

Hi Michael,

On Thu, Aug 11, 2022 at 03:46:35PM +0800, kernel test robot wrote:
>tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
>head:   40d43a7507e1547dd45cb02af2e40d897c591870
>commit: d79b32c2e4a4e66d5678410cd45815c1c2375196 [14849/15097] vdpa_sim_blk: add support for discard and write-zeroes
>config: i386-randconfig-a015 (https://download.01.org/0day-ci/archive/20220811/202208111501.5PSP1WaM-lkp@intel.com/config)
>compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 5f1c7e2cc5a3c07cbc2412e851a7283c1841f520)
>reproduce (this is a W=1 build):
>        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>        chmod +x ~/bin/make.cross
>        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=d79b32c2e4a4e66d5678410cd45815c1c2375196
>        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
>        git fetch --no-tags linux-next master
>        git checkout d79b32c2e4a4e66d5678410cd45815c1c2375196
>        # save the config file
>        mkdir build_dir && cp config build_dir/.config
>        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/vdpa/vdpa_sim/
>
>If you fix the issue, kindly add following tag where applicable
>Reported-by: kernel test robot <lkp@intel.com>
>
>All error/warnings (new ones prefixed by >>):
>
>>> 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: warning: mixing declarations and code is incompatible with standards before C99 [-Wdeclaration-after-statement]
>                   u32 num_sectors, flags;
>                       ^
>   1 warning and 7 errors generated.

I'll send followup patches to fix this issue and another that I found 
building with C=2 (virtio_blk_discard_write_zeroes fields are __leX not 
__virtioX, so I should use leX_to_cpu).

Is that okay or should I re-send the original series fixed?

Thanks,
Stefano