[usb:usb-linus 12/16] drivers/usb/host/xhci-ring.c:676:19: warning: format '%ld' expects argument of type 'long int', but argument 3 has type 'size_t {aka unsigned int}'

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

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-linus
head:   f7fac17ca925faa03fc5eb854c081a24075f8bad
commit: 597c56e372dab2c7f79b8d700aad3a5deebf9d1b [12/16] xhci: update bounce buffer with correct sg num
config: i386-randconfig-x018-201920 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        git checkout 597c56e372dab2c7f79b8d700aad3a5deebf9d1b
        # save the attached .config to linux build tree
        make ARCH=i386 

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

All warnings (new ones prefixed by >>):

   In file included from include/linux/dma-mapping.h:7:0,
                    from drivers/usb/host/xhci-ring.c:57:
   drivers/usb/host/xhci-ring.c: In function 'xhci_unmap_td_bounce_buffer':
>> drivers/usb/host/xhci-ring.c:676:19: warning: format '%ld' expects argument of type 'long int', but argument 3 has type 'size_t {aka unsigned int}' [-Wformat=]
      xhci_warn(xhci, "WARN Wrong bounce buffer read length: %ld != %d\n",
                      ^
   include/linux/device.h:1400:22: note: in definition of macro 'dev_fmt'
    #define dev_fmt(fmt) fmt
                         ^~~
>> drivers/usb/host/xhci.h:1920:2: note: in expansion of macro 'dev_warn'
     dev_warn(xhci_to_hcd(xhci)->self.controller , fmt , ## args)
     ^~~~~~~~
>> drivers/usb/host/xhci-ring.c:676:3: note: in expansion of macro 'xhci_warn'
      xhci_warn(xhci, "WARN Wrong bounce buffer read length: %ld != %d\n",
      ^~~~~~~~~
   drivers/usb/host/xhci-ring.c: In function 'xhci_align_td':
   drivers/usb/host/xhci-ring.c:3169:5: warning: format '%ld' expects argument of type 'long int', but argument 3 has type 'size_t {aka unsigned int}' [-Wformat=]
        "WARN Wrong bounce buffer write length: %ld != %d\n",
        ^
   include/linux/device.h:1400:22: note: in definition of macro 'dev_fmt'
    #define dev_fmt(fmt) fmt
                         ^~~
>> drivers/usb/host/xhci.h:1920:2: note: in expansion of macro 'dev_warn'
     dev_warn(xhci_to_hcd(xhci)->self.controller , fmt , ## args)
     ^~~~~~~~
   drivers/usb/host/xhci-ring.c:3168:4: note: in expansion of macro 'xhci_warn'
       xhci_warn(xhci,
       ^~~~~~~~~

vim +676 drivers/usb/host/xhci-ring.c

   652	
   653	static void xhci_unmap_td_bounce_buffer(struct xhci_hcd *xhci,
   654			struct xhci_ring *ring, struct xhci_td *td)
   655	{
   656		struct device *dev = xhci_to_hcd(xhci)->self.controller;
   657		struct xhci_segment *seg = td->bounce_seg;
   658		struct urb *urb = td->urb;
   659		size_t len;
   660	
   661		if (!ring || !seg || !urb)
   662			return;
   663	
   664		if (usb_urb_dir_out(urb)) {
   665			dma_unmap_single(dev, seg->bounce_dma, ring->bounce_buf_len,
   666					 DMA_TO_DEVICE);
   667			return;
   668		}
   669	
   670		dma_unmap_single(dev, seg->bounce_dma, ring->bounce_buf_len,
   671				 DMA_FROM_DEVICE);
   672		/* for in tranfers we need to copy the data from bounce to sg */
   673		len = sg_pcopy_from_buffer(urb->sg, urb->num_sgs, seg->bounce_buf,
   674				     seg->bounce_len, seg->bounce_offs);
   675		if (len != seg->bounce_len)
 > 676			xhci_warn(xhci, "WARN Wrong bounce buffer read length: %ld != %d\n",
   677					len, seg->bounce_len);
   678		seg->bounce_len = 0;
   679		seg->bounce_offs = 0;
   680	}
   681	

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