[android-common:android12-kiwi-5.10 4/4] drivers/virtio/virtio_pvclock.c:49:6: warning: no previous prototype for 'update_suspend_time'

[kernel test robot <lkp@intel.com>]

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tree:   https://android.googlesource.com/kernel/common android12-kiwi-5.10
head:   029865ac9555743665dd106b4bbefb2f371849e9
commit: 029865ac9555743665dd106b4bbefb2f371849e9 [4/4] ANDROID: virtio: virtio_pvclock: initial driver impl
config: i386-allyesconfig (https://download.01.org/0day-ci/archive/20220125/202201252119.OR28gWwd-lkp(a)intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        git remote add android-common https://android.googlesource.com/kernel/common
        git fetch --no-tags android-common android12-kiwi-5.10
        git checkout 029865ac9555743665dd106b4bbefb2f371849e9
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/virtio/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/virtio/virtio_pvclock.c:49:6: warning: no previous prototype for 'update_suspend_time' [-Wmissing-prototypes]
      49 | void update_suspend_time(struct work_struct *work)
         |      ^~~~~~~~~~~~~~~~~~~
   drivers/virtio/virtio_pvclock.c: In function 'virtpvclock_validate':
>> drivers/virtio/virtio_pvclock.c:295:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
     295 |  uint32_t rating =
         |  ^~~~~~~~


vim +/update_suspend_time +49 drivers/virtio/virtio_pvclock.c

    48	
  > 49	void update_suspend_time(struct work_struct *work)
    50	{
    51		u64 suspend_ns, suspend_time_delta = 0;
    52		struct timespec64 inject_time;
    53		struct virtio_pvclock *vp;
    54	
    55		vp = container_of(work, struct virtio_pvclock,
    56				  update_suspend_time_work);
    57	
    58		virtio_cread(vp->vdev, struct virtio_pvclock_config, suspend_time_ns,
    59			     &suspend_ns);
    60	
    61		mutex_lock(&vp->inject_suspend_lock);
    62		if (suspend_ns > vp->injected_suspend_ns) {
    63			suspend_time_delta = suspend_ns - vp->injected_suspend_ns;
    64			vp->injected_suspend_ns = suspend_ns;
    65		}
    66		mutex_unlock(&vp->inject_suspend_lock);
    67	
    68		if (suspend_time_delta == 0) {
    69			dev_err(&vp->vdev->dev,
    70				"%s: suspend_time_ns is less than injected_suspend_ns\n",
    71				__func__);
    72			return;
    73		}
    74	
    75		inject_time = ns_to_timespec64(suspend_time_delta);
    76	
    77		timekeeping_inject_sleeptime64(&inject_time);
    78	
    79		dev_info(&vp->vdev->dev, "injected sleeptime: %llu ns\n",
    80			 suspend_time_delta);
    81	}
    82	

---
0-DAY CI Kernel Test Service, Intel Corporation
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