From c3c50e8b651887bcefcc13beb3739c00b2379b5c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Tue, 13 Mar 2012 12:35:51 +0200 Subject: drm: Add drm_mode_copy() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add a helper function to copy a display mode. Use it in drm_mode_duplicate() and nouveau mode_fixup hooks. Signed-off-by: Ville Syrjälä Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_modes.c | 28 +++++++++++++++++++++++----- 1 file changed, 23 insertions(+), 5 deletions(-) (limited to 'drivers/gpu/drm/drm_modes.c') diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index 7ff13bc47ca2..b7adb4a967fd 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -713,6 +713,27 @@ void drm_mode_set_crtcinfo(struct drm_display_mode *p, int adjust_flags) EXPORT_SYMBOL(drm_mode_set_crtcinfo); +/** + * drm_mode_copy - copy the mode + * @dst: mode to overwrite + * @src: mode to copy + * + * LOCKING: + * None. + * + * Copy an existing mode into another mode, preserving the object id + * of the destination mode. + */ +void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src) +{ + int id = dst->base.id; + + *dst = *src; + dst->base.id = id; + INIT_LIST_HEAD(&dst->head); +} +EXPORT_SYMBOL(drm_mode_copy); + /** * drm_mode_duplicate - allocate and duplicate an existing mode * @m: mode to duplicate @@ -727,16 +748,13 @@ struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev, const struct drm_display_mode *mode) { struct drm_display_mode *nmode; - int new_id; nmode = drm_mode_create(dev); if (!nmode) return NULL; - new_id = nmode->base.id; - *nmode = *mode; - nmode->base.id = new_id; - INIT_LIST_HEAD(&nmode->head); + drm_mode_copy(nmode, mode); + return nmode; } EXPORT_SYMBOL(drm_mode_duplicate); -- cgit v1.2.3