diff mbox series

[v3,8/9] iio: adc: rockchip_saradc: Make use of the helper function dev_err_probe()

Message ID 20210928141956.2148-8-caihuoqing@baidu.com (mailing list archive)
State Superseded
Headers show
Series [v3,1/9] iio: adc: ab8500-gpadc: Make use of the helper function dev_err_probe() | expand

Commit Message

Cai,Huoqing Sept. 28, 2021, 2:19 p.m. UTC
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.
Using dev_err_probe() can reduce code size, and the error value
gets printed.

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
---
v1->v2: Remove the separate line of PTR_ERR().

 drivers/iio/adc/rockchip_saradc.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

Comments

Jonathan Cameron Sept. 29, 2021, 4:55 p.m. UTC | #1
On Tue, 28 Sep 2021 22:19:54 +0800
Cai Huoqing <caihuoqing@baidu.com> wrote:

> 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.
> Using dev_err_probe() can reduce code size, and the error value
> gets printed.
> 
> Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>

In this driver, there is also a call to
devm_reset_control_get_exclusive() which I think can return
-EPROBE_DEFER

There isn't a message printed on that particular patch, but it would
be good to add something generic. Same for platform_get_irq()

There are some devm_clk_get() calls as well which likewise probably
want handling in a similar fashion as you have done in other patches.

Thanks,

Jonathan


> ---
> v1->v2: Remove the separate line of PTR_ERR().
> 
>  drivers/iio/adc/rockchip_saradc.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c
> index a56a0d7337ca..57419ccb3c70 100644
> --- a/drivers/iio/adc/rockchip_saradc.c
> +++ b/drivers/iio/adc/rockchip_saradc.c
> @@ -392,11 +392,9 @@ static int rockchip_saradc_probe(struct platform_device *pdev)
>  	}
>  
>  	info->vref = devm_regulator_get(&pdev->dev, "vref");
> -	if (IS_ERR(info->vref)) {
> -		dev_err(&pdev->dev, "failed to get regulator, %ld\n",
> -			PTR_ERR(info->vref));
> -		return PTR_ERR(info->vref);
> -	}
> +	if (IS_ERR(info->vref))
> +		return dev_err_probe(&pdev->dev, PTR_ERR(info->vref),
> +				     "failed to get regulator\n");
>  
>  	if (info->reset)
>  		rockchip_saradc_reset_controller(info->reset);
diff mbox series

Patch

diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c
index a56a0d7337ca..57419ccb3c70 100644
--- a/drivers/iio/adc/rockchip_saradc.c
+++ b/drivers/iio/adc/rockchip_saradc.c
@@ -392,11 +392,9 @@  static int rockchip_saradc_probe(struct platform_device *pdev)
 	}
 
 	info->vref = devm_regulator_get(&pdev->dev, "vref");
-	if (IS_ERR(info->vref)) {
-		dev_err(&pdev->dev, "failed to get regulator, %ld\n",
-			PTR_ERR(info->vref));
-		return PTR_ERR(info->vref);
-	}
+	if (IS_ERR(info->vref))
+		return dev_err_probe(&pdev->dev, PTR_ERR(info->vref),
+				     "failed to get regulator\n");
 
 	if (info->reset)
 		rockchip_saradc_reset_controller(info->reset);