Hi, Hsin-Yi:
On Wed, 2019-05-29 at 18:25 +0800, Hsin-Yi Wang wrote:
> 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.
Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx>
>
> Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
> Signed-off-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_drv.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index 8718d123ccaa..bbfe3a464aea 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -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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