Commit 7dd1a64b authored by Hsin-Yi Wang's avatar Hsin-Yi Wang Committed by Greg Kroah-Hartman

drm/mediatek: clear num_pipes when unbind driver

[ Upstream commit a4cd1d2b ]

num_pipes is used for mutex created in mtk_drm_crtc_create(). If we
don't clear num_pipes count, when rebinding driver, the count will
be accumulated. From mtk_disp_mutex_get(), there can only be at most
10 mutex id. Clear this number so it starts from 0 in every rebind.

Fixes: 119f5173 ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
Signed-off-by: default avatarHsin-Yi Wang <hsinyi@chromium.org>
Signed-off-by: default avatarCK Hu <ck.hu@mediatek.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 815c6c19
......@@ -400,6 +400,7 @@ static void mtk_drm_unbind(struct device *dev)
drm_dev_unregister(private->drm);
mtk_drm_kms_deinit(private->drm);
drm_dev_put(private->drm);
private->num_pipes = 0;
private->drm = NULL;
}
......
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