media: imx7-media-csi: Check the return value from clk_prepare_enable() (ddfb2982) · Commits · 戴 / test

clk_prepare_enable() may fail, so we should better check its return value and propagate it in the case of error. Signed-off-by:

drivers/staging/media/imx/imx7-media-csi.c

+10 −4

Original line number	Diff line number	Diff line
		@@ -390,17 +390,23 @@ static void imx7_csi_error_recovery(struct imx7_csi *csi)
		imx7_csi_hw_enable(csi);
		}

		static void imx7_csi_init(struct imx7_csi *csi)
		static int imx7_csi_init(struct imx7_csi *csi)
		{
		int ret;

		if (csi->is_init)
		return;
		return 0;

		clk_prepare_enable(csi->mclk);
		ret = clk_prepare_enable(csi->mclk);
		if (ret < 0)
		return ret;
		imx7_csi_hw_reset(csi);
		imx7_csi_init_interface(csi);
		imx7_csi_dmareq_rff_enable(csi);

		csi->is_init = true;

		return 0;
		}

		static void imx7_csi_deinit(struct imx7_csi *csi)
		@@ -513,7 +519,7 @@ static int imx7_csi_link_setup(struct media_entity *entity,

		init:
		if (csi->sink \|\| csi->src_sd)
		imx7_csi_init(csi);
		ret = imx7_csi_init(csi);
		else
		imx7_csi_deinit(csi);