From: Jani Nikula Date: Thu, 14 Sep 2023 15:53:17 +0000 (+0300) Subject: drm/mediatek/dp: fix memory leak on ->get_edid callback audio detection X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d82dbbb169f2d375ba56ead30a84fb112d218c8e;p=linux drm/mediatek/dp: fix memory leak on ->get_edid callback audio detection commit dab12fa8d2bd3868cf2de485ed15a3feef28a13d upstream. The sads returned by drm_edid_to_sad() needs to be freed. Fixes: e71a8ebbe086 ("drm/mediatek: dp: Audio support for MT8195") Cc: Guillaume Ranquet Cc: Bo-Chen Chen Cc: AngeloGioacchino Del Regno Cc: Dmitry Osipenko Cc: Chun-Kuang Hu Cc: Philipp Zabel Cc: Matthias Brugger Cc: dri-devel@lists.freedesktop.org Cc: linux-mediatek@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: # v6.1+ Signed-off-by: Jani Nikula Reviewed-by: Chen-Yu Tsai Link: https://patchwork.kernel.org/project/dri-devel/patch/20230914155317.2511876-1-jani.nikula@intel.com/ Signed-off-by: Chun-Kuang Hu Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c index 076aa5491057..e8ae25315d0e 100644 --- a/drivers/gpu/drm/mediatek/mtk_dp.c +++ b/drivers/gpu/drm/mediatek/mtk_dp.c @@ -1983,7 +1983,6 @@ static struct edid *mtk_dp_get_edid(struct drm_bridge *bridge, bool enabled = mtk_dp->enabled; struct edid *new_edid = NULL; struct mtk_dp_audio_cfg *audio_caps = &mtk_dp->info.audio_cur_cfg; - struct cea_sad *sads; if (!enabled) { drm_atomic_bridge_chain_pre_enable(bridge, connector->state->state); @@ -2010,7 +2009,11 @@ static struct edid *mtk_dp_get_edid(struct drm_bridge *bridge, } if (new_edid) { + struct cea_sad *sads; + audio_caps->sad_count = drm_edid_to_sad(new_edid, &sads); + kfree(sads); + audio_caps->detect_monitor = drm_detect_monitor_audio(new_edid); }