package/kernel/mwlwifi/patches/001-remove-vfs_write.patch

   1 --- a/debugfs.c
   2 +++ b/debugfs.c
   3 @@ -279,7 +279,6 @@ static void core_dump_file(u8 *valbuf, u
   4                            u32 append, u32 totallen, bool textmode)
   5  {
   6         struct file *filp_core = NULL;
   7 -       mm_segment_t oldfs;
   8         char file_name[40];
   9         u8 *buf = kmalloc(length * 3, GFP_KERNEL);
  10         u8 *data_p = buf;
  11 @@ -292,9 +291,6 @@ static void core_dump_file(u8 *valbuf, u
  12         sprintf(file_name, "/dev/shm/coredump-%x-%x",
  13                 region, (region + totallen));
  14
  15 -       oldfs = get_fs();
  16 -       set_fs(KERNEL_DS);
  17 -
  18         if (append)
  19                 filp_core = filp_open(file_name, O_RDWR | O_APPEND, 0);
  20         else
  21 @@ -317,15 +313,15 @@ static void core_dump_file(u8 *valbuf, u
  22                         }
  23                         data_p = buf + j;
  24                         data_p += sprintf(data_p, "\n");
  25 -                       vfs_write(filp_core, buf, strlen(buf),
  26 -                                 &filp_core->f_pos);
  27 +                       kernel_write(filp_core, buf, strlen(buf),
  28 +                                    &filp_core->f_pos);
  29                 } else
  30 -                       vfs_write(filp_core, valbuf, length, &filp_core->f_pos);
  31 +                       kernel_write(filp_core, valbuf, length,
  32 +                                    &filp_core->f_pos);
  33
  34                 filp_close(filp_core, current->files);
  35         }
  36
  37 -       set_fs(oldfs);
  38         kfree(buf);
  39  }
  40
  41 @@ -1339,7 +1335,6 @@ static ssize_t mwl_debugfs_ba_hist_read(
  42         u8 bmap0flag, nobaflag;
  43         char buff[500], file_location[20];
  44         struct file *filp_bahisto;
  45 -       mm_segment_t oldfs;
  46         u8 *data_p = buff;
  47         ssize_t ret;
  48
  49 @@ -1355,13 +1350,10 @@ static ssize_t mwl_debugfs_ba_hist_read(
  50         memset(file_location, 0, sizeof(file_location));
  51         sprintf(file_location, "/tmp/ba_histo-%d", priv->ba_aid);
  52
  53 -       oldfs = get_fs();
  54 -       set_fs(KERNEL_DS);
  55         filp_bahisto = filp_open(file_location,
  56                                  O_RDWR | O_CREAT | O_TRUNC, 0);
  57
  58         if (IS_ERR(filp_bahisto)) {
  59 -               set_fs(oldfs);
  60                 ret = -EIO;
  61                 goto err;
  62         }
  63 @@ -1402,8 +1394,8 @@ static ssize_t mwl_debugfs_ba_hist_read(
  64
  65                         /* Buffer is full. Write to file and reset buf */
  66                         if ((strlen(buff) + 36) >= 500) {
  67 -                               vfs_write(filp_bahisto, buff, strlen(buff),
  68 -                                         &filp_bahisto->f_pos);
  69 +                               kernel_write(filp_bahisto, buff, strlen(buff),
  70 +                                            &filp_bahisto->f_pos);
  71                                 mdelay(2);
  72                                 memset(buff, 0, sizeof(buff));
  73                                 data_p = buff;
  74 @@ -1427,8 +1419,8 @@ static ssize_t mwl_debugfs_ba_hist_read(
  75                                 data_p += sprintf(data_p, "%8d\n", nobaflag);
  76                 }
  77
  78 -               vfs_write(filp_bahisto, buff, strlen(buff),
  79 -                         &filp_bahisto->f_pos);
  80 +               kernel_write(filp_bahisto, buff, strlen(buff),
  81 +                            &filp_bahisto->f_pos);
  82                 len += scnprintf(p + len, size - len,
  83                                  "hole: %d, expect: %d, bmap0: %d, noba: %d\n",
  84                                  baholecnt, baexpcnt, bmap0cnt, nobacnt);
  85 @@ -1441,7 +1433,6 @@ static ssize_t mwl_debugfs_ba_hist_read(
  86                                  priv->ba_aid);
  87
  88         filp_close(filp_bahisto, current->files);
  89 -       set_fs(oldfs);
  90
  91         ret = simple_read_from_buffer(ubuf, count, ppos, p, len);
  92