| Message ID | 20240830072611.332886-1-yanzhen@vivo.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v1] soc: mediatek: Simplify with dev_err_probe() | expand |
On Fri, Aug 30, 2024 at 4:28 PM Yan Zhen <yanzhen@vivo.com> wrote: > > Using dev_err_probe() to simplify the error path and unify a > message template. > > Using this helper is totally fine even if err is known to never > be -EPROBE_DEFER. > > The benefit compared to a normal dev_err() is the standardized format > of the error code, it being emitted symbolically and the fact that > the error code is returned which allows more compact error paths. > > Signed-off-by: Yan Zhen <yanzhen@vivo.com> > --- > drivers/soc/mediatek/mtk-mmsys.c | 10 ++++------ > 1 file changed, 4 insertions(+), 6 deletions(-) > > diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c > index 938240714e54..2f2aefd4d830 100644 > --- a/drivers/soc/mediatek/mtk-mmsys.c > +++ b/drivers/soc/mediatek/mtk-mmsys.c > @@ -399,8 +399,7 @@ static int mtk_mmsys_probe(struct platform_device *pdev) > mmsys->regs = devm_platform_ioremap_resource(pdev, 0); > if (IS_ERR(mmsys->regs)) { > ret = PTR_ERR(mmsys->regs); > - dev_err(dev, "Failed to ioremap mmsys registers: %d\n", ret); > - return ret; > + return dev_err_probe(dev, ret, "Failed to ioremap mmsys registers"); Nit: I would just get rid of `ret` here. > } > > mmsys->data = of_device_get_match_data(&pdev->dev); > @@ -413,10 +412,9 @@ static int mtk_mmsys_probe(struct platform_device *pdev) > mmsys->rcdev.ops = &mtk_mmsys_reset_ops; > mmsys->rcdev.of_node = pdev->dev.of_node; > ret = devm_reset_controller_register(&pdev->dev, &mmsys->rcdev); > - if (ret) { > - dev_err(&pdev->dev, "Couldn't register mmsys reset controller: %d\n", ret); > - return ret; > - } > + if (ret) > + return dev_err_probe(&pdev->dev, ret, > + "Couldn't register mmsys reset controller"); > } > > /* CMDQ is optional */ > -- > 2.34.1 > >
diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c index 938240714e54..2f2aefd4d830 100644 --- a/drivers/soc/mediatek/mtk-mmsys.c +++ b/drivers/soc/mediatek/mtk-mmsys.c @@ -399,8 +399,7 @@ static int mtk_mmsys_probe(struct platform_device *pdev) mmsys->regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(mmsys->regs)) { ret = PTR_ERR(mmsys->regs); - dev_err(dev, "Failed to ioremap mmsys registers: %d\n", ret); - return ret; + return dev_err_probe(dev, ret, "Failed to ioremap mmsys registers"); } mmsys->data = of_device_get_match_data(&pdev->dev); @@ -413,10 +412,9 @@ static int mtk_mmsys_probe(struct platform_device *pdev) mmsys->rcdev.ops = &mtk_mmsys_reset_ops; mmsys->rcdev.of_node = pdev->dev.of_node; ret = devm_reset_controller_register(&pdev->dev, &mmsys->rcdev); - if (ret) { - dev_err(&pdev->dev, "Couldn't register mmsys reset controller: %d\n", ret); - return ret; - } + if (ret) + return dev_err_probe(&pdev->dev, ret, + "Couldn't register mmsys reset controller"); } /* CMDQ is optional */
Using dev_err_probe() to simplify the error path and unify a message template. Using this helper is totally fine even if err is known to never be -EPROBE_DEFER. The benefit compared to a normal dev_err() is the standardized format of the error code, it being emitted symbolically and the fact that the error code is returned which allows more compact error paths. Signed-off-by: Yan Zhen <yanzhen@vivo.com> --- drivers/soc/mediatek/mtk-mmsys.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-)