Re: [PATCH] virtio: add VIRTIO_F_NOTIFICATION_DATA feature support

[kernel test robot]

Hi Viktor,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on mst-vhost/linux-next]
[also build test WARNING on linus/master v6.3-rc3 next-20230320]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Viktor-Prutyanov/virtio-add-VIRTIO_F_NOTIFICATION_DATA-feature-support/20230320-195725
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next
patch link:    https://lore.kernel.org/r/20230320115451.1232171-1-viktor%40daynix.com
patch subject: [PATCH] virtio: add VIRTIO_F_NOTIFICATION_DATA feature support
config: i386-randconfig-s003 (https://download.01.org/0day-ci/archive/20230321/202303210403.LsRG8goQ-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://github.com/intel-lab-lkp/linux/commit/b6212a12ca1691dc346e5de046ec46bd3ce11247
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Viktor-Prutyanov/virtio-add-VIRTIO_F_NOTIFICATION_DATA-feature-support/20230320-195725
        git checkout b6212a12ca1691dc346e5de046ec46bd3ce11247
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 olddefconfig
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/virtio/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202303210403.LsRG8goQ-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
>> drivers/virtio/virtio_mmio.c:293:16: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int val @@     got restricted __le32 [usertype] data @@
   drivers/virtio/virtio_mmio.c:293:16: sparse:     expected unsigned int val
   drivers/virtio/virtio_mmio.c:293:16: sparse:     got restricted __le32 [usertype] data

vim +293 drivers/virtio/virtio_mmio.c

   287	
   288	static bool vm_notify_with_data(struct virtqueue *vq)
   289	{
   290		struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vq->vdev);
   291		__le32 data = vring_fill_notification_data(vq);
   292	
 > 293		writel(data, vm_dev->base + VIRTIO_MMIO_QUEUE_NOTIFY);
   294	
   295		return true;
   296	}
   297	

-- 
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