media: ti: Use devm_platform_get_and_ioremap_resource() in ti_csi2rx_probe()

[PATCH] media: ti: Use devm_platform_get_and_ioremap_resource() in ti_csi2rx_probe()

Posted by Markus Elfring 2 years ago

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Mon, 5 Feb 2024 13:14:00 +0100

A wrapper function is available since the commit 890cc39a879906b63912482dfc41944579df2dc6
("drivers: provide devm_platform_get_and_ioremap_resource()").
Thus reuse existing functionality instead of keeping duplicate source code.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
index 2b078c5d7f5d..6ff066097346 100644
--- a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
+++ b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
@@ -1100,9 +1100,7 @@ static int ti_csi2rx_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, csi);

 	mutex_init(&csi->mutex);
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	csi->shim = devm_ioremap_resource(&pdev->dev, res);
+	csi->shim = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
 	if (IS_ERR(csi->shim)) {
 		ret = PTR_ERR(csi->shim);
 		goto err_mutex;
--
2.43.0

Re: [PATCH] media: ti: Use devm_platform_get_and_ioremap_resource() in ti_csi2rx_probe()

Posted by Jai Luthra 2 years ago

Hi Markus,

Thanks for the patch.

On Feb 05, 2024 at 13:20:30 +0100, Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Mon, 5 Feb 2024 13:14:00 +0100
> 
> A wrapper function is available since the commit 890cc39a879906b63912482dfc41944579df2dc6
> ("drivers: provide devm_platform_get_and_ioremap_resource()").
> Thus reuse existing functionality instead of keeping duplicate source code.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
> ---
>  drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
> index 2b078c5d7f5d..6ff066097346 100644
> --- a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
> +++ b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
> @@ -1100,9 +1100,7 @@ static int ti_csi2rx_probe(struct platform_device *pdev)
>  	platform_set_drvdata(pdev, csi);
> 
>  	mutex_init(&csi->mutex);
> -
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

As this "res" variable is not used anywhere else, it would be better to 
drop the declaration for it and instead call:

    csi->shim = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);

With that change,

Reviewed-by: Jai Luthra <j-luthra@ti.com>

> -	csi->shim = devm_ioremap_resource(&pdev->dev, res);
> +	csi->shim = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
>  	if (IS_ERR(csi->shim)) {
>  		ret = PTR_ERR(csi->shim);
>  		goto err_mutex;
> --
> 2.43.0
> 

-- 
Thanks,
Jai

GPG Fingerprint: 4DE0 D818 E5D5 75E8 D45A AFC5 43DE 91F9 249A 7145

[PATCH v2] media: ti: Use devm_platform_ioremap_resource() in ti_csi2rx_probe()

Posted by Markus Elfring 2 years ago

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 6 Feb 2024 15:30:13 +0100

A wrapper function is available since the commit 7945f929f1a77a1c8887a97ca07f87626858ff42
("drivers: provide devm_platform_ioremap_resource()").

* Thus reuse existing functionality instead of keeping duplicate source code.

* Delete a local variable which became unnecessary with this refactoring.


This issue was transformed by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---

v2:
The transformation pattern was adjusted based on advices by known contributors.

Examples:
* Doug Anderson
* Geert Uytterhoeven
* Robin Murphy


 drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
index 2b078c5d7f5d..54aba055c96b 100644
--- a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
+++ b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
@@ -1089,7 +1089,6 @@ static void ti_csi2rx_cleanup_vb2q(struct ti_csi2rx_dev *csi)
 static int ti_csi2rx_probe(struct platform_device *pdev)
 {
 	struct ti_csi2rx_dev *csi;
-	struct resource *res;
 	int ret;

 	csi = devm_kzalloc(&pdev->dev, sizeof(*csi), GFP_KERNEL);
@@ -1100,9 +1099,7 @@ static int ti_csi2rx_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, csi);

 	mutex_init(&csi->mutex);
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	csi->shim = devm_ioremap_resource(&pdev->dev, res);
+	csi->shim = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(csi->shim)) {
 		ret = PTR_ERR(csi->shim);
 		goto err_mutex;
--
2.43.0

Re: [PATCH v2] media: ti: Use devm_platform_ioremap_resource() in ti_csi2rx_probe()

Posted by Jai Luthra 2 years ago

Hi Markus,

On Feb 06, 2024 at 15:37:30 +0100, Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Tue, 6 Feb 2024 15:30:13 +0100
> 
> A wrapper function is available since the commit 7945f929f1a77a1c8887a97ca07f87626858ff42
> ("drivers: provide devm_platform_ioremap_resource()").
> 
> * Thus reuse existing functionality instead of keeping duplicate source code.
> 
> * Delete a local variable which became unnecessary with this refactoring.
> 
> 
> This issue was transformed by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>

Reviewed-by: Jai Luthra <j-luthra@ti.com>

> ---
> 
> v2:
> The transformation pattern was adjusted based on advices by known contributors.
> 
> Examples:
> * Doug Anderson
> * Geert Uytterhoeven
> * Robin Murphy
> 
> 
>  drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
> index 2b078c5d7f5d..54aba055c96b 100644
> --- a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
> +++ b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
> @@ -1089,7 +1089,6 @@ static void ti_csi2rx_cleanup_vb2q(struct ti_csi2rx_dev *csi)
>  static int ti_csi2rx_probe(struct platform_device *pdev)
>  {
>  	struct ti_csi2rx_dev *csi;
> -	struct resource *res;
>  	int ret;
> 
>  	csi = devm_kzalloc(&pdev->dev, sizeof(*csi), GFP_KERNEL);
> @@ -1100,9 +1099,7 @@ static int ti_csi2rx_probe(struct platform_device *pdev)
>  	platform_set_drvdata(pdev, csi);
> 
>  	mutex_init(&csi->mutex);
> -
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	csi->shim = devm_ioremap_resource(&pdev->dev, res);
> +	csi->shim = devm_platform_ioremap_resource(pdev, 0);
>  	if (IS_ERR(csi->shim)) {
>  		ret = PTR_ERR(csi->shim);
>  		goto err_mutex;
> --
> 2.43.0
> 

-- 
Thanks,
Jai

GPG Fingerprint: 4DE0 D818 E5D5 75E8 D45A AFC5 43DE 91F9 249A 7145