[freescale-fslc:6.6-2.0.x-imx 3650/16788] drivers/rpmsg/imx_rpmsg.c:371:6: warning: no previous prototype for 'imx_rpmsg_restore'

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

tree:   https://github.com/Freescale/linux-fslc 6.6-2.0.x-imx
head:   ac32ba5fe66266329914d2020570364afe217bec
commit: a388cfc5b5001e76c8c3b9866d6e9abf44d03c58 [3650/16788] rpmsg: imx_rpmsg: add partition reset notify
config: i386-buildonly-randconfig-004-20240928 (https://download.01.org/0day-ci/archive/20240929/202409292304.O0065cFS-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240929/202409292304.O0065cFS-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409292304.O0065cFS-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/rpmsg/imx_rpmsg.c:371:6: warning: no previous prototype for 'imx_rpmsg_restore' [-Wmissing-prototypes]
     371 | void imx_rpmsg_restore(struct imx_rpmsg_vproc *rpdev)
         |      ^~~~~~~~~~~~~~~~~


vim +/imx_rpmsg_restore +371 drivers/rpmsg/imx_rpmsg.c

   369	
   370	#ifdef CONFIG_IMX_SCU
 > 371	void imx_rpmsg_restore(struct imx_rpmsg_vproc *rpdev)
   372	{
   373		int i;
   374		int vdev_nums = rpdev->vdev_nums;
   375	
   376		for (i = 0; i < vdev_nums; i++) {
   377			unregister_virtio_device(&rpdev->ivdev[i]->vdev);
   378			kfree(rpdev->ivdev[i]);
   379		}
   380	
   381		/* Make a double check that remote processor is ready or not */
   382		for (i = 0; i < REMOTE_READY_WAIT_MAX_RETRIES; i++) {
   383			if (rpdev->flags & REMOTE_IS_READY)
   384				break;
   385			udelay(100);
   386		}
   387		if (unlikely((rpdev->flags & REMOTE_IS_READY) == 0)) {
   388			pr_err("Wait for remote ready timeout, assume it's dead.\n");
   389			/*
   390			 * In order to make the codes to be robust and back compatible.
   391			 * When wait remote ready timeout, use the MU_SendMessageTimeout
   392			 * to send the first kick-off message when register the vdev.
   393			 */
   394			rpdev->first_notify = rpdev->vdev_nums;
   395		}
   396	
   397		/* Allocate and setup ivdev again to register virtio devices */
   398		if (set_vring_phy_buf(rpdev->pdev, rpdev, rpdev->vdev_nums))
   399			pr_err("No vring buffer.\n");
   400	
   401		for (i = 0; i < vdev_nums; i++) {
   402			rpdev->ivdev[i]->vdev.id.device = VIRTIO_ID_RPMSG;
   403			rpdev->ivdev[i]->vdev.config = &imx_rpmsg_config_ops;
   404			rpdev->ivdev[i]->vdev.dev.parent = &rpdev->pdev->dev;
   405			rpdev->ivdev[i]->vdev.dev.release = imx_rpmsg_vproc_release;
   406			rpdev->ivdev[i]->base_vq_id = i * 2;
   407			rpdev->ivdev[i]->rpdev = rpdev;
   408	
   409			if (register_virtio_device(&rpdev->ivdev[i]->vdev))
   410				pr_err("%s failed to register rpdev.\n", __func__);
   411		}
   412	}
   413	

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