irqchip: Simplify with dev_err_probe()

[PATCH v2] irqchip: Simplify with dev_err_probe()

Posted by Yan Zhen 1 year, 5 months ago

Switch to use 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>
---

Changes in v2:
-Rewrite the subject.
-Remove 'ret' from the message.

 drivers/irqchip/irq-madera.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/irqchip/irq-madera.c b/drivers/irqchip/irq-madera.c
index acceb6e7fa95..d5ad4466a140 100644
--- a/drivers/irqchip/irq-madera.c
+++ b/drivers/irqchip/irq-madera.c
@@ -199,9 +199,8 @@ static int madera_irq_probe(struct platform_device *pdev)
 		ret = regmap_update_bits(madera->regmap, MADERA_IRQ1_CTRL,
 					 MADERA_IRQ_POL_MASK, 0);
 		if (ret) {
-			dev_err(&pdev->dev,
-				"Failed to set IRQ polarity: %d\n", ret);
-			return ret;
+			return dev_err_probe(&pdev->dev, ret,
+						"Failed to set IRQ polarity");
 		}
 	}
 
-- 
2.34.1

Re: [PATCH v2] irqchip: Simplify with dev_err_probe()

Posted by Charles Keepax 1 year, 5 months ago

On Fri, Aug 30, 2024 at 03:05:04PM +0800, Yan Zhen wrote:
> Switch to use 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>
> ---

Subject line probably should be irqchip/madera: but otherwise:

Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>

Thanks,
Charles

Re: [PATCH v2] irqchip: Simplify with dev_err_probe()

Posted by Krzysztof Kozlowski 1 year, 5 months ago

On 30/08/2024 10:17, Charles Keepax wrote:
> On Fri, Aug 30, 2024 at 03:05:04PM +0800, Yan Zhen wrote:
>> Switch to use 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>
>> ---
> 
> Subject line probably should be irqchip/madera: but otherwise:
> 
> Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>

No, this must stop. Do not change one line per patch.

Best regards,
Krzysztof