diff mbox series

[net-next,v4,5/8] net: mdio: mux-mmioreg: Simplified with dev_err_probe()

Message ID 20240830031325.2406672-6-ruanjinjie@huawei.com (mailing list archive)
State Accepted
Commit 4078513fc86c354e768954e8ebb67bc2bbddf69d
Delegated to: Netdev Maintainers
Headers show
Series net: Simplified with scoped function | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 16 this patch: 16
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 7 of 7 maintainers
netdev/build_clang success Errors and warnings before: 16 this patch: 16
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 16 this patch: 16
netdev/checkpatch warning WARNING: line length of 88 exceeds 80 columns
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Jinjie Ruan Aug. 30, 2024, 3:13 a.m. UTC 
Use the dev_err_probe() helper to simplify code.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
---
v4:
- Remove the extra parentheses.
v3:
- Add Reviewed-by.
v2:
- Split into 2 patches.
---
 drivers/net/mdio/mdio-mux-mmioreg.c | 48 ++++++++++++-----------------
 1 file changed, 20 insertions(+), 28 deletions(-)

Comments

Florian Fainelli Sept. 2, 2024, 3:29 p.m. UTC | #1 
On 8/29/2024 8:13 PM, Jinjie Ruan wrote:
> Use the dev_err_probe() helper to simplify code.
> 
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
> ---
> v4:
> - Remove the extra parentheses.
> v3:
> - Add Reviewed-by.
> v2:
> - Split into 2 patches.
> ---
>   drivers/net/mdio/mdio-mux-mmioreg.c | 48 ++++++++++++-----------------
>   1 file changed, 20 insertions(+), 28 deletions(-)
> 
> diff --git a/drivers/net/mdio/mdio-mux-mmioreg.c b/drivers/net/mdio/mdio-mux-mmioreg.c
> index 4d87e61fec7b..b70e6d1ad429 100644
> --- a/drivers/net/mdio/mdio-mux-mmioreg.c
> +++ b/drivers/net/mdio/mdio-mux-mmioreg.c
> @@ -109,30 +109,25 @@ static int mdio_mux_mmioreg_probe(struct platform_device *pdev)
>   		return -ENOMEM;
>   
>   	ret = of_address_to_resource(np, 0, &res);
> -	if (ret) {
> -		dev_err(&pdev->dev, "could not obtain memory map for node %pOF\n",
> -			np);
> -		return ret;
> -	}
> +	if (ret)
> +		return dev_err_probe(&pdev->dev, ret,
> +				     "could not obtain memory map for node %pOF\n", np);

Besides that one, which I don't think is even a candidate for resource 
deferral in the first place given the OF platform implementation, it 
does not seem to help that much to switch to dev_err_probe() other than 
just combining the error message and return code in a single statement. 
So it's fewer lines of codes, but it is not exactly what dev_err_probe() 
was originally intended for IMHO.

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Andrew Lunn Sept. 3, 2024, 12:53 p.m. UTC | #2 
> > @@ -109,30 +109,25 @@ static int mdio_mux_mmioreg_probe(struct platform_device *pdev)
> >   		return -ENOMEM;
> >   	ret = of_address_to_resource(np, 0, &res);
> > -	if (ret) {
> > -		dev_err(&pdev->dev, "could not obtain memory map for node %pOF\n",
> > -			np);
> > -		return ret;
> > -	}
> > +	if (ret)
> > +		return dev_err_probe(&pdev->dev, ret,
> > +				     "could not obtain memory map for node %pOF\n", np);
> 
> Besides that one, which I don't think is even a candidate for resource
> deferral in the first place given the OF platform implementation, it does
> not seem to help that much to switch to dev_err_probe() other than just
> combining the error message and return code in a single statement. So it's
> fewer lines of codes, but it is not exactly what dev_err_probe() was
> originally intended for IMHO.

Agreed. Rather than abuse dev_err_probe(), maybe a dev_err_error()
would be added with the same prototype, does the same formatting, and
skips all the PROBE_DEFFER logic. The problem would be, it would
encourage more of this churn.

	Andrew
diff mbox series

Patch

diff --git a/drivers/net/mdio/mdio-mux-mmioreg.c b/drivers/net/mdio/mdio-mux-mmioreg.c
index 4d87e61fec7b..b70e6d1ad429 100644
--- a/drivers/net/mdio/mdio-mux-mmioreg.c
+++ b/drivers/net/mdio/mdio-mux-mmioreg.c
@@ -109,30 +109,25 @@  static int mdio_mux_mmioreg_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	ret = of_address_to_resource(np, 0, &res);
-	if (ret) {
-		dev_err(&pdev->dev, "could not obtain memory map for node %pOF\n",
-			np);
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret,
+				     "could not obtain memory map for node %pOF\n", np);
 	s->phys = res.start;
 
 	s->iosize = resource_size(&res);
 	if (s->iosize != sizeof(uint8_t) &&
 	    s->iosize != sizeof(uint16_t) &&
-	    s->iosize != sizeof(uint32_t)) {
-		dev_err(&pdev->dev, "only 8/16/32-bit registers are supported\n");
-		return -EINVAL;
-	}
+	    s->iosize != sizeof(uint32_t))
+		return dev_err_probe(&pdev->dev, -EINVAL,
+				     "only 8/16/32-bit registers are supported\n");
 
 	iprop = of_get_property(np, "mux-mask", &len);
-	if (!iprop || len != sizeof(uint32_t)) {
-		dev_err(&pdev->dev, "missing or invalid mux-mask property\n");
-		return -ENODEV;
-	}
-	if (be32_to_cpup(iprop) >= BIT(s->iosize * 8)) {
-		dev_err(&pdev->dev, "only 8/16/32-bit registers are supported\n");
-		return -EINVAL;
-	}
+	if (!iprop || len != sizeof(uint32_t))
+		return dev_err_probe(&pdev->dev, -ENODEV,
+				     "missing or invalid mux-mask property\n");
+	if (be32_to_cpup(iprop) >= BIT(s->iosize * 8))
+		return dev_err_probe(&pdev->dev, -EINVAL,
+				     "only 8/16/32-bit registers are supported\n");
 	s->mask = be32_to_cpup(iprop);
 
 	/*
@@ -142,17 +137,14 @@  static int mdio_mux_mmioreg_probe(struct platform_device *pdev)
 	for_each_available_child_of_node_scoped(np, np2) {
 		u64 reg;
 
-		if (of_property_read_reg(np2, 0, &reg, NULL)) {
-			dev_err(&pdev->dev, "mdio-mux child node %pOF is "
-				"missing a 'reg' property\n", np2);
-			return -ENODEV;
-		}
-		if ((u32)reg & ~s->mask) {
-			dev_err(&pdev->dev, "mdio-mux child node %pOF has "
-				"a 'reg' value with unmasked bits\n",
-				np2);
-			return -ENODEV;
-		}
+		if (of_property_read_reg(np2, 0, &reg, NULL))
+			return dev_err_probe(&pdev->dev, -ENODEV,
+					     "mdio-mux child node %pOF is missing a 'reg' property\n",
+					     np2);
+		if ((u32)reg & ~s->mask)
+			return dev_err_probe(&pdev->dev, -ENODEV,
+					     "mdio-mux child node %pOF has a 'reg' value with unmasked bits\n",
+					     np2);
 	}
 
 	ret = mdio_mux_init(&pdev->dev, pdev->dev.of_node,