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DRM: bug: RADEON_DEBUGFS_MAX_{NUM_FILES => COMPONENTS}

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The value of RADEON_DEBUGFS_MAX_NUM_FILES has been used to
specify the size of an array, each element of which looks
like this:

  struct radeon_debugfs {
          struct drm_info_list    *files;
          unsigned                num_files;
  };

Consequently, the number of debugfs files may be much greater
than RADEON_DEBUGFS_MAX_NUM_FILES, something that the current
code ignores:

  if ((_radeon_debugfs_count + nfiles) > RADEON_DEBUGFS_MAX_NUM_FILES) {
          DRM_ERROR("Reached maximum number of debugfs files.\n");
          DRM_ERROR("Report so we increase RADEON_DEBUGFS_MAX_NUM_FILES.\n");
          return -EINVAL;
  }

This commit fixes this make, and accordingly renames:

  RADEON_DEBUGFS_MAX_NUM_FILES

to:

  RADEON_DEBUGFS_MAX_COMPONENTS

Signed-off-by: Michael Witten <mfwitten@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Michael Witten
2011-09-16 20:45:30 +00:00
committed by Dave Airlie
parent d0d0a225e6
commit c245cb9e15
2 changed files with 9 additions and 6 deletions
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13
drivers/gpu/drm/radeon/radeon_device.c
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@@ -981,7 +981,7 @@ struct radeon_debugfs {
struct drm_info_list *files;
unsigned num_files;
};
static struct radeon_debugfs _radeon_debugfs[RADEON_DEBUGFS_MAX_NUM_FILES];
static struct radeon_debugfs _radeon_debugfs[RADEON_DEBUGFS_MAX_COMPONENTS];
static unsigned _radeon_debugfs_count = 0;
int radeon_debugfs_add_files(struct radeon_device *rdev,
@@ -996,14 +996,17 @@ int radeon_debugfs_add_files(struct radeon_device *rdev,
return 0;
}
}
if ((_radeon_debugfs_count + nfiles) > RADEON_DEBUGFS_MAX_NUM_FILES) {
DRM_ERROR("Reached maximum number of debugfs files.\n");
DRM_ERROR("Report so we increase RADEON_DEBUGFS_MAX_NUM_FILES.\n");
i = _radeon_debugfs_count + 1;
if (i > RADEON_DEBUGFS_MAX_COMPONENTS) {
DRM_ERROR("Reached maximum number of debugfs components.\n");
DRM_ERROR("Report so we increase "
"RADEON_DEBUGFS_MAX_COMPONENTS.\n");
return -EINVAL;
}
_radeon_debugfs[_radeon_debugfs_count].files = files;
_radeon_debugfs[_radeon_debugfs_count].num_files = nfiles;
_radeon_debugfs_count++;
_radeon_debugfs_count = i;
#if defined(CONFIG_DEBUG_FS)
drm_debugfs_create_files(files, nfiles,
rdev->ddev->control->debugfs_root,