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drm: Mark constant arrays of drm_display_mode const

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... and fixup some methods to accept the constant argument.

Now that constant module arrays are loaded into read-only memory, using
const appropriately has some benefits beyond warning the programmer
about likely mistakes.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Chris Wilson
2011-01-26 09:49:47 +00:00
committed by Dave Airlie
parent 60b212f8dd
commit b1f559ecdc
9 changed files with 27 additions and 23 deletions
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6
drivers/gpu/drm/drm_modes.c
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@@ -593,7 +593,7 @@ EXPORT_SYMBOL(drm_mode_height);
*
* Return @modes's hsync rate in kHz, rounded to the nearest int.
*/
int drm_mode_hsync(struct drm_display_mode *mode)
int drm_mode_hsync(const struct drm_display_mode *mode)
{
unsigned int calc_val;
@@ -627,7 +627,7 @@ EXPORT_SYMBOL(drm_mode_hsync);
* If it is 70.288, it will return 70Hz.
* If it is 59.6, it will return 60Hz.
*/
int drm_mode_vrefresh(struct drm_display_mode *mode)
int drm_mode_vrefresh(const struct drm_display_mode *mode)
{
int refresh = 0;
unsigned int calc_val;
@@ -725,7 +725,7 @@ EXPORT_SYMBOL(drm_mode_set_crtcinfo);
* a pointer to it. Used to create new instances of established modes.
*/
struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
struct drm_display_mode *mode)
const struct drm_display_mode *mode)
{
struct drm_display_mode *nmode;
int new_id;