Re: [patch 4/4] media: cx231xx: Consolidate dmesg output

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Hi Thomas,

I love your patch! Perhaps something to improve:

[auto build test WARNING on linuxtv-media/master]
[also build test WARNING on linus/master linux/master v5.9 next-20201013]
[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]

url:    https://github.com/0day-ci/linux/commits/Thomas-Gleixner/media-Cleanup-in_interrupt-usage/20201013-224011
base:   git://linuxtv.org/media_tree.git master
config: microblaze-randconfig-r004-20201014 (attached as .config)
compiler: microblaze-linux-gcc (GCC) 9.3.0
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://github.com/0day-ci/linux/commit/703daca167ddea5ab71b9547b549c1c1499f2bf4
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Thomas-Gleixner/media-Cleanup-in_interrupt-usage/20201013-224011
        git checkout 703daca167ddea5ab71b9547b549c1c1499f2bf4
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze 

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

All warnings (new ones prefixed by >>):

   In file included from include/linux/device.h:15,
                    from include/linux/acpi.h:15,
                    from include/linux/i2c.h:13,
                    from drivers/media/usb/cx231xx/cx231xx.h:16,
                    from drivers/media/usb/cx231xx/cx231xx-vbi.c:10:
   drivers/media/usb/cx231xx/cx231xx-vbi.c: In function 'cx231xx_init_vbi_isoc':
>> drivers/media/usb/cx231xx/cx231xx-vbi.c:411:5: warning: format '%s' expects a matching 'char *' argument [-Wformat=]
     411 |     "unable to allocate %i bytes for transfer buffer %i%s\n",
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/dev_printk.h:19:22: note: in definition of macro 'dev_fmt'
      19 | #define dev_fmt(fmt) fmt
         |                      ^~~
   drivers/media/usb/cx231xx/cx231xx-vbi.c:410:4: note: in expansion of macro 'dev_err'
     410 |    dev_err(dev->dev,
         |    ^~~~~~~
   drivers/media/usb/cx231xx/cx231xx-vbi.c:411:57: note: format string is defined here
     411 |     "unable to allocate %i bytes for transfer buffer %i%s\n",
         |                                                        ~^
         |                                                         |
         |                                                         char *

vim +411 drivers/media/usb/cx231xx/cx231xx-vbi.c

e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  336  
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  337  /*
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  338   * Allocate URBs and start IRQ
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  339   */
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  340  int cx231xx_init_vbi_isoc(struct cx231xx *dev, int max_packets,
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  341  			  int num_bufs, int max_pkt_size,
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  342  			  int (*bulk_copy) (struct cx231xx *dev,
84b5dbf39ed2f51 drivers/media/video/cx231xx/cx231xx-vbi.c Mauro Carvalho Chehab 2009-03-03  343  					    struct urb *urb))
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  344  {
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  345  	struct cx231xx_dmaqueue *dma_q = &dev->vbi_mode.vidq;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  346  	int i;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  347  	int sb_size, pipe;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  348  	struct urb *urb;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  349  	int rc;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  350  
336fea922936c11 drivers/media/usb/cx231xx/cx231xx-vbi.c   Mauro Carvalho Chehab 2014-11-03  351  	dev_dbg(dev->dev, "called cx231xx_vbi_isoc\n");
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  352  
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  353  	/* De-allocates all pending stuff */
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  354  	cx231xx_uninit_vbi_isoc(dev);
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  355  
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  356  	/* clear if any halt */
84b5dbf39ed2f51 drivers/media/video/cx231xx/cx231xx-vbi.c Mauro Carvalho Chehab 2009-03-03  357  	usb_clear_halt(dev->udev,
84b5dbf39ed2f51 drivers/media/video/cx231xx/cx231xx-vbi.c Mauro Carvalho Chehab 2009-03-03  358  		       usb_rcvbulkpipe(dev->udev,
84b5dbf39ed2f51 drivers/media/video/cx231xx/cx231xx-vbi.c Mauro Carvalho Chehab 2009-03-03  359  				       dev->vbi_mode.end_point_addr));
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  360  
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  361  	dev->vbi_mode.bulk_ctl.bulk_copy = bulk_copy;
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  362  	dev->vbi_mode.bulk_ctl.num_bufs = num_bufs;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  363  	dma_q->pos = 0;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  364  	dma_q->is_partial_line = 0;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  365  	dma_q->last_sav = 0;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  366  	dma_q->current_field = -1;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  367  	dma_q->bytes_left_in_line = dev->width << 1;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  368  	dma_q->lines_per_field = ((dev->norm & V4L2_STD_625_50) ?
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  369  				  PAL_VBI_LINES : NTSC_VBI_LINES);
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  370  	dma_q->lines_completed = 0;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  371  	for (i = 0; i < 8; i++)
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  372  		dma_q->partial_buf[i] = 0;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  373  
6396bb221514d28 drivers/media/usb/cx231xx/cx231xx-vbi.c   Kees Cook             2018-06-12  374  	dev->vbi_mode.bulk_ctl.urb = kcalloc(num_bufs, sizeof(void *),
cde4362f0244a70 drivers/media/video/cx231xx/cx231xx-vbi.c Mauro Carvalho Chehab 2009-03-03  375  					     GFP_KERNEL);
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  376  	if (!dev->vbi_mode.bulk_ctl.urb) {
336fea922936c11 drivers/media/usb/cx231xx/cx231xx-vbi.c   Mauro Carvalho Chehab 2014-11-03  377  		dev_err(dev->dev,
b7085c08647598a drivers/media/usb/cx231xx/cx231xx-vbi.c   Mauro Carvalho Chehab 2014-11-02  378  			"cannot alloc memory for usb buffers\n");
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  379  		return -ENOMEM;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  380  	}
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  381  
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  382  	dev->vbi_mode.bulk_ctl.transfer_buffer =
6396bb221514d28 drivers/media/usb/cx231xx/cx231xx-vbi.c   Kees Cook             2018-06-12  383  	    kcalloc(num_bufs, sizeof(void *), GFP_KERNEL);
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  384  	if (!dev->vbi_mode.bulk_ctl.transfer_buffer) {
336fea922936c11 drivers/media/usb/cx231xx/cx231xx-vbi.c   Mauro Carvalho Chehab 2014-11-03  385  		dev_err(dev->dev,
b7085c08647598a drivers/media/usb/cx231xx/cx231xx-vbi.c   Mauro Carvalho Chehab 2014-11-02  386  			"cannot allocate memory for usbtransfer\n");
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  387  		kfree(dev->vbi_mode.bulk_ctl.urb);
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  388  		return -ENOMEM;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  389  	}
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  390  
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  391  	dev->vbi_mode.bulk_ctl.max_pkt_size = max_pkt_size;
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  392  	dev->vbi_mode.bulk_ctl.buf = NULL;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  393  
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  394  	sb_size = max_packets * dev->vbi_mode.bulk_ctl.max_pkt_size;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  395  
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  396  	/* allocate urbs and transfer buffers */
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  397  	for (i = 0; i < dev->vbi_mode.bulk_ctl.num_bufs; i++) {
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  398  
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  399  		urb = usb_alloc_urb(0, GFP_KERNEL);
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  400  		if (!urb) {
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  401  			cx231xx_uninit_vbi_isoc(dev);
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  402  			return -ENOMEM;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  403  		}
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  404  		dev->vbi_mode.bulk_ctl.urb[i] = urb;
cd5534be6bc681d drivers/media/video/cx231xx/cx231xx-vbi.c David Dillow          2012-06-18  405  		urb->transfer_flags = 0;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  406  
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  407  		dev->vbi_mode.bulk_ctl.transfer_buffer[i] =
84b5dbf39ed2f51 drivers/media/video/cx231xx/cx231xx-vbi.c Mauro Carvalho Chehab 2009-03-03  408  		    kzalloc(sb_size, GFP_KERNEL);
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  409  		if (!dev->vbi_mode.bulk_ctl.transfer_buffer[i]) {
336fea922936c11 drivers/media/usb/cx231xx/cx231xx-vbi.c   Mauro Carvalho Chehab 2014-11-03  410  			dev_err(dev->dev,
b7085c08647598a drivers/media/usb/cx231xx/cx231xx-vbi.c   Mauro Carvalho Chehab 2014-11-02 @411  				"unable to allocate %i bytes for transfer buffer %i%s\n",
703daca167ddea5 drivers/media/usb/cx231xx/cx231xx-vbi.c   Thomas Gleixner       2020-10-13  412  				sb_size, i);
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  413  			cx231xx_uninit_vbi_isoc(dev);
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  414  			return -ENOMEM;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  415  		}
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  416  
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  417  		pipe = usb_rcvbulkpipe(dev->udev, dev->vbi_mode.end_point_addr);
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  418  		usb_fill_bulk_urb(urb, dev->udev, pipe,
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  419  				  dev->vbi_mode.bulk_ctl.transfer_buffer[i],
84b5dbf39ed2f51 drivers/media/video/cx231xx/cx231xx-vbi.c Mauro Carvalho Chehab 2009-03-03  420  				  sb_size, cx231xx_irq_vbi_callback, dma_q);
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  421  	}
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  422  
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  423  	init_waitqueue_head(&dma_q->wq);
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  424  
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  425  	/* submit urbs and enables IRQ */
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  426  	for (i = 0; i < dev->vbi_mode.bulk_ctl.num_bufs; i++) {
64fbf4445526068 drivers/media/video/cx231xx/cx231xx-vbi.c Palash Bandyopadhyay  2010-07-06  427  		rc = usb_submit_urb(dev->vbi_mode.bulk_ctl.urb[i], GFP_ATOMIC);
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  428  		if (rc) {
336fea922936c11 drivers/media/usb/cx231xx/cx231xx-vbi.c   Mauro Carvalho Chehab 2014-11-03  429  			dev_err(dev->dev,
b7085c08647598a drivers/media/usb/cx231xx/cx231xx-vbi.c   Mauro Carvalho Chehab 2014-11-02  430  				"submit of urb %i failed (error=%i)\n", i, rc);
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  431  			cx231xx_uninit_vbi_isoc(dev);
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  432  			return rc;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  433  		}
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  434  	}
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  435  
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  436  	cx231xx_capture_start(dev, 1, Vbi);
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  437  
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  438  	return 0;
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  439  }
84b5dbf39ed2f51 drivers/media/video/cx231xx/cx231xx-vbi.c Mauro Carvalho Chehab 2009-03-03  440  EXPORT_SYMBOL_GPL(cx231xx_init_vbi_isoc);
e0d3bafd02586cf drivers/media/video/cx231xx/cx231xx-vbi.c Sri Deevi             2009-03-03  441  

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