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Message-ID: <201608130216.QtDN5IDJ%fengguang.wu@intel.com>
Date:	Sat, 13 Aug 2016 02:29:19 +0800
From:	kbuild test robot <fengguang.wu@...el.com>
To:	Tobias Jakobi <tjakobi@...h.uni-bielefeld.de>
Cc:	kbuild-all@...org, linux-kernel@...r.kernel.org,
	Daniel Vetter <daniel.vetter@...ll.ch>
Subject: drivers/gpu/drm/udl/udl_fb.c:206:2: note: in expansion of macro 'if'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4b9eaf33d83d91430b7ca45d0ebf8241da489c92
commit: c0f0c177b5a9aa6d3791aa497a64a20a297ebc6f drm/udl: make fbdev support really optional
date:   4 weeks ago
config: x86_64-randconfig-n0-08130055 (attached as .config)
compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        git checkout c0f0c177b5a9aa6d3791aa497a64a20a297ebc6f
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   In file included from include/uapi/linux/stddef.h:1:0,
                    from include/linux/stddef.h:4,
                    from include/uapi/linux/posix_types.h:4,
                    from include/uapi/linux/types.h:13,
                    from include/linux/types.h:5,
                    from include/linux/list.h:4,
                    from include/linux/module.h:9,
                    from drivers/gpu/drm/udl/udl_fb.c:13:
   drivers/gpu/drm/udl/udl_fb.c: In function 'udl_fb_open':
   drivers/gpu/drm/udl/udl_fb.c:206:23: error: 'struct fb_info' has no member named 'fbdefio'
     if (fb_defio && (info->fbdefio == NULL)) {
                          ^
   include/linux/compiler.h:151:30: note: in definition of macro '__trace_if'
     if (__builtin_constant_p(!!(cond)) ? !!(cond) :   \
                                 ^~~~
>> drivers/gpu/drm/udl/udl_fb.c:206:2: note: in expansion of macro 'if'
     if (fb_defio && (info->fbdefio == NULL)) {
     ^~
   drivers/gpu/drm/udl/udl_fb.c:206:23: error: 'struct fb_info' has no member named 'fbdefio'
     if (fb_defio && (info->fbdefio == NULL)) {
                          ^
   include/linux/compiler.h:151:42: note: in definition of macro '__trace_if'
     if (__builtin_constant_p(!!(cond)) ? !!(cond) :   \
                                             ^~~~
>> drivers/gpu/drm/udl/udl_fb.c:206:2: note: in expansion of macro 'if'
     if (fb_defio && (info->fbdefio == NULL)) {
     ^~
   drivers/gpu/drm/udl/udl_fb.c:206:23: error: 'struct fb_info' has no member named 'fbdefio'
     if (fb_defio && (info->fbdefio == NULL)) {
                          ^
   include/linux/compiler.h:162:16: note: in definition of macro '__trace_if'
      ______r = !!(cond);     \
                   ^~~~
>> drivers/gpu/drm/udl/udl_fb.c:206:2: note: in expansion of macro 'if'
     if (fb_defio && (info->fbdefio == NULL)) {
     ^~
   drivers/gpu/drm/udl/udl_fb.c:211:28: error: invalid application of 'sizeof' to incomplete type 'struct fb_deferred_io'
      fbdefio = kmalloc(sizeof(struct fb_deferred_io), GFP_KERNEL);
                               ^~~~~~
   drivers/gpu/drm/udl/udl_fb.c:214:11: error: dereferencing pointer to incomplete type 'struct fb_deferred_io'
       fbdefio->delay = DL_DEFIO_WRITE_DELAY;
              ^~
   drivers/gpu/drm/udl/udl_fb.c:218:7: error: 'struct fb_info' has no member named 'fbdefio'
      info->fbdefio = fbdefio;
          ^~
   In file included from include/uapi/linux/stddef.h:1:0,
                    from include/linux/stddef.h:4,
                    from include/uapi/linux/posix_types.h:4,
                    from include/uapi/linux/types.h:13,
                    from include/linux/types.h:5,
                    from include/linux/list.h:4,
                    from include/linux/module.h:9,
                    from drivers/gpu/drm/udl/udl_fb.c:13:
   drivers/gpu/drm/udl/udl_fb.c: In function 'udl_fb_release':
   drivers/gpu/drm/udl/udl_fb.c:238:38: error: 'struct fb_info' has no member named 'fbdefio'
     if ((ufbdev->fb_count == 0) && (info->fbdefio)) {
                                         ^
   include/linux/compiler.h:151:30: note: in definition of macro '__trace_if'
     if (__builtin_constant_p(!!(cond)) ? !!(cond) :   \
                                 ^~~~
   drivers/gpu/drm/udl/udl_fb.c:238:2: note: in expansion of macro 'if'
     if ((ufbdev->fb_count == 0) && (info->fbdefio)) {
     ^~
   drivers/gpu/drm/udl/udl_fb.c:238:38: error: 'struct fb_info' has no member named 'fbdefio'
     if ((ufbdev->fb_count == 0) && (info->fbdefio)) {
                                         ^
   include/linux/compiler.h:151:42: note: in definition of macro '__trace_if'
     if (__builtin_constant_p(!!(cond)) ? !!(cond) :   \
                                             ^~~~
   drivers/gpu/drm/udl/udl_fb.c:238:2: note: in expansion of macro 'if'
     if ((ufbdev->fb_count == 0) && (info->fbdefio)) {
     ^~
   drivers/gpu/drm/udl/udl_fb.c:238:38: error: 'struct fb_info' has no member named 'fbdefio'
     if ((ufbdev->fb_count == 0) && (info->fbdefio)) {
                                         ^
   include/linux/compiler.h:162:16: note: in definition of macro '__trace_if'
      ______r = !!(cond);     \
                   ^~~~
   drivers/gpu/drm/udl/udl_fb.c:238:2: note: in expansion of macro 'if'
     if ((ufbdev->fb_count == 0) && (info->fbdefio)) {
     ^~
   drivers/gpu/drm/udl/udl_fb.c:240:13: error: 'struct fb_info' has no member named 'fbdefio'
      kfree(info->fbdefio);
                ^~
   drivers/gpu/drm/udl/udl_fb.c:241:7: error: 'struct fb_info' has no member named 'fbdefio'
      info->fbdefio = NULL;
          ^~

vim +/if +206 drivers/gpu/drm/udl/udl_fb.c

5320918b9 Dave Airlie           2010-12-15    7   * Copyright (C) 2009 Bernie Thompson <bernie@...gable.com>
5320918b9 Dave Airlie           2010-12-15    8   *
5320918b9 Dave Airlie           2010-12-15    9   * This file is subject to the terms and conditions of the GNU General Public
5320918b9 Dave Airlie           2010-12-15   10   * License v2. See the file COPYING in the main directory of this archive for
5320918b9 Dave Airlie           2010-12-15   11   * more details.
5320918b9 Dave Airlie           2010-12-15   12   */
5320918b9 Dave Airlie           2010-12-15  @13  #include <linux/module.h>
5320918b9 Dave Airlie           2010-12-15   14  #include <linux/slab.h>
5320918b9 Dave Airlie           2010-12-15   15  #include <linux/fb.h>
32ecd2426 Dave Airlie           2012-07-30   16  #include <linux/dma-buf.h>
5320918b9 Dave Airlie           2010-12-15   17  
760285e7e David Howells         2012-10-02   18  #include <drm/drmP.h>
760285e7e David Howells         2012-10-02   19  #include <drm/drm_crtc.h>
760285e7e David Howells         2012-10-02   20  #include <drm/drm_crtc_helper.h>
5320918b9 Dave Airlie           2010-12-15   21  #include "udl_drv.h"
5320918b9 Dave Airlie           2010-12-15   22  
760285e7e David Howells         2012-10-02   23  #include <drm/drm_fb_helper.h>
5320918b9 Dave Airlie           2010-12-15   24  
677d23b70 Dave Airlie           2013-02-07   25  #define DL_DEFIO_WRITE_DELAY    (HZ/20) /* fb_deferred_io.delay in jiffies */
5320918b9 Dave Airlie           2010-12-15   26  
677d23b70 Dave Airlie           2013-02-07   27  static int fb_defio = 0;  /* Optionally enable experimental fb_defio mmap support */
5320918b9 Dave Airlie           2010-12-15   28  static int fb_bpp = 16;
5320918b9 Dave Airlie           2010-12-15   29  
5320918b9 Dave Airlie           2010-12-15   30  module_param(fb_bpp, int, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP);
5320918b9 Dave Airlie           2010-12-15   31  module_param(fb_defio, int, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP);
5320918b9 Dave Airlie           2010-12-15   32  
5320918b9 Dave Airlie           2010-12-15   33  struct udl_fbdev {
5320918b9 Dave Airlie           2010-12-15   34  	struct drm_fb_helper helper;
5320918b9 Dave Airlie           2010-12-15   35  	struct udl_framebuffer ufb;
5320918b9 Dave Airlie           2010-12-15   36  	int fb_count;
5320918b9 Dave Airlie           2010-12-15   37  };
5320918b9 Dave Airlie           2010-12-15   38  
5320918b9 Dave Airlie           2010-12-15   39  #define DL_ALIGN_UP(x, a) ALIGN(x, a)
5320918b9 Dave Airlie           2010-12-15   40  #define DL_ALIGN_DOWN(x, a) ALIGN(x-(a-1), a)
5320918b9 Dave Airlie           2010-12-15   41  
5320918b9 Dave Airlie           2010-12-15   42  /** Read the red component (0..255) of a 32 bpp colour. */
5320918b9 Dave Airlie           2010-12-15   43  #define DLO_RGB_GETRED(col) (uint8_t)((col) & 0xFF)
5320918b9 Dave Airlie           2010-12-15   44  
5320918b9 Dave Airlie           2010-12-15   45  /** Read the green component (0..255) of a 32 bpp colour. */
5320918b9 Dave Airlie           2010-12-15   46  #define DLO_RGB_GETGRN(col) (uint8_t)(((col) >> 8) & 0xFF)
5320918b9 Dave Airlie           2010-12-15   47  
5320918b9 Dave Airlie           2010-12-15   48  /** Read the blue component (0..255) of a 32 bpp colour. */
5320918b9 Dave Airlie           2010-12-15   49  #define DLO_RGB_GETBLU(col) (uint8_t)(((col) >> 16) & 0xFF)
5320918b9 Dave Airlie           2010-12-15   50  
5320918b9 Dave Airlie           2010-12-15   51  /** Return red/green component of a 16 bpp colour number. */
5320918b9 Dave Airlie           2010-12-15   52  #define DLO_RG16(red, grn) (uint8_t)((((red) & 0xF8) | ((grn) >> 5)) & 0xFF)
5320918b9 Dave Airlie           2010-12-15   53  
5320918b9 Dave Airlie           2010-12-15   54  /** Return green/blue component of a 16 bpp colour number. */
5320918b9 Dave Airlie           2010-12-15   55  #define DLO_GB16(grn, blu) (uint8_t)(((((grn) & 0x1C) << 3) | ((blu) >> 3)) & 0xFF)
5320918b9 Dave Airlie           2010-12-15   56  
5320918b9 Dave Airlie           2010-12-15   57  /** Return 8 bpp colour number from red, green and blue components. */
5320918b9 Dave Airlie           2010-12-15   58  #define DLO_RGB8(red, grn, blu) ((((red) << 5) | (((grn) & 3) << 3) | ((blu) & 7)) & 0xFF)
5320918b9 Dave Airlie           2010-12-15   59  
5320918b9 Dave Airlie           2010-12-15   60  #if 0
5320918b9 Dave Airlie           2010-12-15   61  static uint8_t rgb8(uint32_t col)
5320918b9 Dave Airlie           2010-12-15   62  {
5320918b9 Dave Airlie           2010-12-15   63  	uint8_t red = DLO_RGB_GETRED(col);
5320918b9 Dave Airlie           2010-12-15   64  	uint8_t grn = DLO_RGB_GETGRN(col);
5320918b9 Dave Airlie           2010-12-15   65  	uint8_t blu = DLO_RGB_GETBLU(col);
5320918b9 Dave Airlie           2010-12-15   66  
5320918b9 Dave Airlie           2010-12-15   67  	return DLO_RGB8(red, grn, blu);
5320918b9 Dave Airlie           2010-12-15   68  }
5320918b9 Dave Airlie           2010-12-15   69  
5320918b9 Dave Airlie           2010-12-15   70  static uint16_t rgb16(uint32_t col)
5320918b9 Dave Airlie           2010-12-15   71  {
5320918b9 Dave Airlie           2010-12-15   72  	uint8_t red = DLO_RGB_GETRED(col);
5320918b9 Dave Airlie           2010-12-15   73  	uint8_t grn = DLO_RGB_GETGRN(col);
5320918b9 Dave Airlie           2010-12-15   74  	uint8_t blu = DLO_RGB_GETBLU(col);
5320918b9 Dave Airlie           2010-12-15   75  
5320918b9 Dave Airlie           2010-12-15   76  	return (DLO_RG16(red, grn) << 8) + DLO_GB16(grn, blu);
5320918b9 Dave Airlie           2010-12-15   77  }
5320918b9 Dave Airlie           2010-12-15   78  #endif
5320918b9 Dave Airlie           2010-12-15   79  
5320918b9 Dave Airlie           2010-12-15   80  int udl_handle_damage(struct udl_framebuffer *fb, int x, int y,
5320918b9 Dave Airlie           2010-12-15   81  		      int width, int height)
5320918b9 Dave Airlie           2010-12-15   82  {
5320918b9 Dave Airlie           2010-12-15   83  	struct drm_device *dev = fb->base.dev;
5320918b9 Dave Airlie           2010-12-15   84  	struct udl_device *udl = dev->dev_private;
5320918b9 Dave Airlie           2010-12-15   85  	int i, ret;
5320918b9 Dave Airlie           2010-12-15   86  	char *cmd;
5320918b9 Dave Airlie           2010-12-15   87  	cycles_t start_cycles, end_cycles;
5320918b9 Dave Airlie           2010-12-15   88  	int bytes_sent = 0;
5320918b9 Dave Airlie           2010-12-15   89  	int bytes_identical = 0;
5320918b9 Dave Airlie           2010-12-15   90  	struct urb *urb;
5320918b9 Dave Airlie           2010-12-15   91  	int aligned_x;
5320918b9 Dave Airlie           2010-12-15   92  	int bpp = (fb->base.bits_per_pixel / 8);
5320918b9 Dave Airlie           2010-12-15   93  
5320918b9 Dave Airlie           2010-12-15   94  	if (!fb->active_16)
5320918b9 Dave Airlie           2010-12-15   95  		return 0;
5320918b9 Dave Airlie           2010-12-15   96  
e8aa1d1eb Dave Airlie           2012-03-26   97  	if (!fb->obj->vmapping) {
e8aa1d1eb Dave Airlie           2012-03-26   98  		ret = udl_gem_vmap(fb->obj);
e8aa1d1eb Dave Airlie           2012-03-26   99  		if (ret == -ENOMEM) {
e8aa1d1eb Dave Airlie           2012-03-26  100  			DRM_ERROR("failed to vmap fb\n");
e8aa1d1eb Dave Airlie           2012-03-26  101  			return 0;
e8aa1d1eb Dave Airlie           2012-03-26  102  		}
e8aa1d1eb Dave Airlie           2012-03-26  103  		if (!fb->obj->vmapping) {
e8aa1d1eb Dave Airlie           2012-03-26  104  			DRM_ERROR("failed to vmapping\n");
e8aa1d1eb Dave Airlie           2012-03-26  105  			return 0;
e8aa1d1eb Dave Airlie           2012-03-26  106  		}
e8aa1d1eb Dave Airlie           2012-03-26  107  	}
5320918b9 Dave Airlie           2010-12-15  108  
5320918b9 Dave Airlie           2010-12-15  109  	aligned_x = DL_ALIGN_DOWN(x, sizeof(unsigned long));
5320918b9 Dave Airlie           2010-12-15  110  	width = DL_ALIGN_UP(width + (x-aligned_x), sizeof(unsigned long));
5320918b9 Dave Airlie           2010-12-15  111  	x = aligned_x;
5320918b9 Dave Airlie           2010-12-15  112  
5320918b9 Dave Airlie           2010-12-15  113  	if ((width <= 0) ||
5320918b9 Dave Airlie           2010-12-15  114  	    (x + width > fb->base.width) ||
5320918b9 Dave Airlie           2010-12-15  115  	    (y + height > fb->base.height))
5320918b9 Dave Airlie           2010-12-15  116  		return -EINVAL;
5320918b9 Dave Airlie           2010-12-15  117  
bcb39af44 Dave Airlie           2013-02-07  118  	start_cycles = get_cycles();
bcb39af44 Dave Airlie           2013-02-07  119  
5320918b9 Dave Airlie           2010-12-15  120  	urb = udl_get_urb(dev);
5320918b9 Dave Airlie           2010-12-15  121  	if (!urb)
5320918b9 Dave Airlie           2010-12-15  122  		return 0;
5320918b9 Dave Airlie           2010-12-15  123  	cmd = urb->transfer_buffer;
5320918b9 Dave Airlie           2010-12-15  124  
e37588240 Noralf Trønnes        2016-04-28  125  	for (i = y; i < height ; i++) {
5320918b9 Dave Airlie           2010-12-15  126  		const int line_offset = fb->base.pitches[0] * i;
5320918b9 Dave Airlie           2010-12-15  127  		const int byte_offset = line_offset + (x * bpp);
3916e1d71 Dave Airlie           2012-11-01  128  		const int dev_byte_offset = (fb->base.width * bpp * i) + (x * bpp);
5320918b9 Dave Airlie           2010-12-15  129  		if (udl_render_hline(dev, bpp, &urb,
5320918b9 Dave Airlie           2010-12-15  130  				     (char *) fb->obj->vmapping,
3916e1d71 Dave Airlie           2012-11-01  131  				     &cmd, byte_offset, dev_byte_offset,
e37588240 Noralf Trønnes        2016-04-28  132  				     width * bpp,
5320918b9 Dave Airlie           2010-12-15  133  				     &bytes_identical, &bytes_sent))
5320918b9 Dave Airlie           2010-12-15  134  			goto error;
5320918b9 Dave Airlie           2010-12-15  135  	}
5320918b9 Dave Airlie           2010-12-15  136  
5320918b9 Dave Airlie           2010-12-15  137  	if (cmd > (char *) urb->transfer_buffer) {
5320918b9 Dave Airlie           2010-12-15  138  		/* Send partial buffer remaining before exiting */
5320918b9 Dave Airlie           2010-12-15  139  		int len = cmd - (char *) urb->transfer_buffer;
5320918b9 Dave Airlie           2010-12-15  140  		ret = udl_submit_urb(dev, urb, len);
5320918b9 Dave Airlie           2010-12-15  141  		bytes_sent += len;
5320918b9 Dave Airlie           2010-12-15  142  	} else
5320918b9 Dave Airlie           2010-12-15  143  		udl_urb_completion(urb);
5320918b9 Dave Airlie           2010-12-15  144  
5320918b9 Dave Airlie           2010-12-15  145  error:
5320918b9 Dave Airlie           2010-12-15  146  	atomic_add(bytes_sent, &udl->bytes_sent);
5320918b9 Dave Airlie           2010-12-15  147  	atomic_add(bytes_identical, &udl->bytes_identical);
5320918b9 Dave Airlie           2010-12-15  148  	atomic_add(width*height*bpp, &udl->bytes_rendered);
5320918b9 Dave Airlie           2010-12-15  149  	end_cycles = get_cycles();
5320918b9 Dave Airlie           2010-12-15  150  	atomic_add(((unsigned int) ((end_cycles - start_cycles)
5320918b9 Dave Airlie           2010-12-15  151  		    >> 10)), /* Kcycles */
5320918b9 Dave Airlie           2010-12-15  152  		   &udl->cpu_kcycles_used);
5320918b9 Dave Airlie           2010-12-15  153  
5320918b9 Dave Airlie           2010-12-15  154  	return 0;
5320918b9 Dave Airlie           2010-12-15  155  }
5320918b9 Dave Airlie           2010-12-15  156  
5320918b9 Dave Airlie           2010-12-15  157  static int udl_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
5320918b9 Dave Airlie           2010-12-15  158  {
5320918b9 Dave Airlie           2010-12-15  159  	unsigned long start = vma->vm_start;
5320918b9 Dave Airlie           2010-12-15  160  	unsigned long size = vma->vm_end - vma->vm_start;
5320918b9 Dave Airlie           2010-12-15  161  	unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
5320918b9 Dave Airlie           2010-12-15  162  	unsigned long page, pos;
5320918b9 Dave Airlie           2010-12-15  163  
5320918b9 Dave Airlie           2010-12-15  164  	if (offset + size > info->fix.smem_len)
5320918b9 Dave Airlie           2010-12-15  165  		return -EINVAL;
5320918b9 Dave Airlie           2010-12-15  166  
5320918b9 Dave Airlie           2010-12-15  167  	pos = (unsigned long)info->fix.smem_start + offset;
5320918b9 Dave Airlie           2010-12-15  168  
5320918b9 Dave Airlie           2010-12-15  169  	pr_notice("mmap() framebuffer addr:%lu size:%lu\n",
5320918b9 Dave Airlie           2010-12-15  170  		  pos, size);
5320918b9 Dave Airlie           2010-12-15  171  
5320918b9 Dave Airlie           2010-12-15  172  	while (size > 0) {
5320918b9 Dave Airlie           2010-12-15  173  		page = vmalloc_to_pfn((void *)pos);
5320918b9 Dave Airlie           2010-12-15  174  		if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED))
5320918b9 Dave Airlie           2010-12-15  175  			return -EAGAIN;
5320918b9 Dave Airlie           2010-12-15  176  
5320918b9 Dave Airlie           2010-12-15  177  		start += PAGE_SIZE;
5320918b9 Dave Airlie           2010-12-15  178  		pos += PAGE_SIZE;
5320918b9 Dave Airlie           2010-12-15  179  		if (size > PAGE_SIZE)
5320918b9 Dave Airlie           2010-12-15  180  			size -= PAGE_SIZE;
5320918b9 Dave Airlie           2010-12-15  181  		else
5320918b9 Dave Airlie           2010-12-15  182  			size = 0;
5320918b9 Dave Airlie           2010-12-15  183  	}
5320918b9 Dave Airlie           2010-12-15  184  
314e51b98 Konstantin Khlebnikov 2012-10-08  185  	/* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
5320918b9 Dave Airlie           2010-12-15  186  	return 0;
5320918b9 Dave Airlie           2010-12-15  187  }
5320918b9 Dave Airlie           2010-12-15  188  
5320918b9 Dave Airlie           2010-12-15  189  /*
5320918b9 Dave Airlie           2010-12-15  190   * It's common for several clients to have framebuffer open simultaneously.
5320918b9 Dave Airlie           2010-12-15  191   * e.g. both fbcon and X. Makes things interesting.
5320918b9 Dave Airlie           2010-12-15  192   * Assumes caller is holding info->lock (for open and release at least)
5320918b9 Dave Airlie           2010-12-15  193   */
5320918b9 Dave Airlie           2010-12-15  194  static int udl_fb_open(struct fb_info *info, int user)
5320918b9 Dave Airlie           2010-12-15  195  {
5320918b9 Dave Airlie           2010-12-15  196  	struct udl_fbdev *ufbdev = info->par;
5320918b9 Dave Airlie           2010-12-15  197  	struct drm_device *dev = ufbdev->ufb.base.dev;
5320918b9 Dave Airlie           2010-12-15  198  	struct udl_device *udl = dev->dev_private;
5320918b9 Dave Airlie           2010-12-15  199  
5320918b9 Dave Airlie           2010-12-15  200  	/* If the USB device is gone, we don't accept new opens */
5320918b9 Dave Airlie           2010-12-15  201  	if (drm_device_is_unplugged(udl->ddev))
5320918b9 Dave Airlie           2010-12-15  202  		return -ENODEV;
5320918b9 Dave Airlie           2010-12-15  203  
5320918b9 Dave Airlie           2010-12-15  204  	ufbdev->fb_count++;
5320918b9 Dave Airlie           2010-12-15  205  
5320918b9 Dave Airlie           2010-12-15 @206  	if (fb_defio && (info->fbdefio == NULL)) {
5320918b9 Dave Airlie           2010-12-15  207  		/* enable defio at last moment if not disabled by client */
5320918b9 Dave Airlie           2010-12-15  208  
5320918b9 Dave Airlie           2010-12-15  209  		struct fb_deferred_io *fbdefio;

:::::: The code at line 206 was first introduced by commit
:::::: 5320918b9a87865223fd6b228e530bf30bc64d9d drm/udl: initial UDL driver (v4)

:::::: TO: Dave Airlie <airlied@...il.com>
:::::: CC: Dave Airlie <airlied@...hat.com>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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