When possible use dev_err_probe help to properly deal with the PROBE_DEFER error, the benefit is that DEFER issue will be logged in the devices_deferred debugfs file. And using dev_err_probe() can reduce code size, the error value gets printed.

Signed-off-by: Cai Huoqing caihuoqing@baidu.com --- drivers/gpu/drm/tegra/dsi.c | 28 ++++++++++++---------------- 1 file changed, 12 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c index f46d377f0c30..a836fcb49b02 100644 --- a/drivers/gpu/drm/tegra/dsi.c +++ b/drivers/gpu/drm/tegra/dsi.c @@ -1587,28 +1587,24 @@ static int tegra_dsi_probe(struct platform_device *pdev) }

dsi->clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(dsi->clk)) { - dev_err(&pdev->dev, "cannot get DSI clock\n"); - return PTR_ERR(dsi->clk); - } + if (IS_ERR(dsi->clk)) + return dev_err_probe(&pdev->dev, PTR_ERR(dsi->clk), + "cannot get DSI clock\n");

dsi->clk_lp = devm_clk_get(&pdev->dev, "lp"); - if (IS_ERR(dsi->clk_lp)) { - dev_err(&pdev->dev, "cannot get low-power clock\n"); - return PTR_ERR(dsi->clk_lp); - } + if (IS_ERR(dsi->clk_lp)) + return dev_err_probe(&pdev->dev, PTR_ERR(dsi->clk_lp), + "cannot get low-power clock\n");

dsi->clk_parent = devm_clk_get(&pdev->dev, "parent"); - if (IS_ERR(dsi->clk_parent)) { - dev_err(&pdev->dev, "cannot get parent clock\n"); - return PTR_ERR(dsi->clk_parent); - } + if (IS_ERR(dsi->clk_parent)) + return dev_err_probe(&pdev->dev, PTR_ERR(dsi->clk_parent), + "cannot get parent clock\n");

dsi->vdd = devm_regulator_get(&pdev->dev, "avdd-dsi-csi"); - if (IS_ERR(dsi->vdd)) { - dev_err(&pdev->dev, "cannot get VDD supply\n"); - return PTR_ERR(dsi->vdd); - } + if (IS_ERR(dsi->vdd)) + return dev_err_probe(&pdev->dev, PTR_ERR(dsi->vdd), + "cannot get VDD supply\n");

err = tegra_dsi_setup_clocks(dsi); if (err < 0) {