diff mbox series

[v2] irqchip/ls-scfg-msi: Use device_get_match_data()

Message ID 20231020130255.2954415-3-robh@kernel.org
State New
Headers
Series [v2] irqchip/ls-scfg-msi: Use device_get_match_data() |

Commit Message

Rob Herring Oct. 20, 2023, 1:02 p.m. UTC 
  Use preferred device_get_match_data() instead of of_match_device() to
get the driver match data in a single step without the unnecessary
intermediate match pointer. With this, adjust the includes to
explicitly include the correct headers. That also serves as
preparation to remove implicit includes within the DT headers.
of_platform.h currently includes platform_device.h among others.

Signed-off-by: Rob Herring <robh@kernel.org>
---
v2:
 - Expand commit message
---
 drivers/irqchip/irq-ls-scfg-msi.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

Comments

Vladimir Oltean Oct. 24, 2023, 9:19 a.m. UTC | #1 
On Fri, Oct 20, 2023 at 08:02:56AM -0500, Rob Herring wrote:
> Use preferred device_get_match_data() instead of of_match_device() to
> get the driver match data in a single step without the unnecessary
> intermediate match pointer. With this, adjust the includes to
> explicitly include the correct headers. That also serves as
> preparation to remove implicit includes within the DT headers.
> of_platform.h currently includes platform_device.h among others.
> 
> Signed-off-by: Rob Herring <robh@kernel.org>
> ---

Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>

> v2:
>  - Expand commit message
> ---
>  drivers/irqchip/irq-ls-scfg-msi.c | 12 +++++-------
>  1 file changed, 5 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/irqchip/irq-ls-scfg-msi.c b/drivers/irqchip/irq-ls-scfg-msi.c
> index f31a262fe438..15cf80b46322 100644
> --- a/drivers/irqchip/irq-ls-scfg-msi.c
> +++ b/drivers/irqchip/irq-ls-scfg-msi.c
> @@ -17,7 +17,8 @@
>  #include <linux/irqdomain.h>
>  #include <linux/of_irq.h>
>  #include <linux/of_pci.h>
> -#include <linux/of_platform.h>
> +#include <linux/platform_device.h>
> +#include <linux/property.h>
>  #include <linux/spinlock.h>
>  
>  #define MSI_IRQS_PER_MSIR	32
> @@ -334,20 +335,17 @@ MODULE_DEVICE_TABLE(of, ls_scfg_msi_id);
>  
>  static int ls_scfg_msi_probe(struct platform_device *pdev)
>  {
> -	const struct of_device_id *match;
>  	struct ls_scfg_msi *msi_data;
>  	struct resource *res;
>  	int i, ret;
>  
> -	match = of_match_device(ls_scfg_msi_id, &pdev->dev);
> -	if (!match)
> -		return -ENODEV;
> -
>  	msi_data = devm_kzalloc(&pdev->dev, sizeof(*msi_data), GFP_KERNEL);
>  	if (!msi_data)
>  		return -ENOMEM;
>  
> -	msi_data->cfg = (struct ls_scfg_msi_cfg *) match->data;
> +	msi_data->cfg = (struct ls_scfg_msi_cfg *)device_get_match_data(&pdev->dev);

I wanted to suggest to drop the unnecessary cast of the void pointer.
But the driver keeps msi_data->cfg as a non-const pointer, and that
causes a warning that is otherwise suppressed by this cast. So eliminating
the type cast and keeping "cfg" as const is definitely a separate change.

> +	if (!msi_data->cfg)
> +		return -ENODEV;
>  
>  	msi_data->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
>  	if (IS_ERR(msi_data->regs)) {
> -- 
> 2.42.0
>
diff mbox series

Patch

diff --git a/drivers/irqchip/irq-ls-scfg-msi.c b/drivers/irqchip/irq-ls-scfg-msi.c
index f31a262fe438..15cf80b46322 100644
--- a/drivers/irqchip/irq-ls-scfg-msi.c
+++ b/drivers/irqchip/irq-ls-scfg-msi.c
@@ -17,7 +17,8 @@ 
 #include <linux/irqdomain.h>
 #include <linux/of_irq.h>
 #include <linux/of_pci.h>
-#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/spinlock.h>
 
 #define MSI_IRQS_PER_MSIR	32
@@ -334,20 +335,17 @@  MODULE_DEVICE_TABLE(of, ls_scfg_msi_id);
 
 static int ls_scfg_msi_probe(struct platform_device *pdev)
 {
-	const struct of_device_id *match;
 	struct ls_scfg_msi *msi_data;
 	struct resource *res;
 	int i, ret;
 
-	match = of_match_device(ls_scfg_msi_id, &pdev->dev);
-	if (!match)
-		return -ENODEV;
-
 	msi_data = devm_kzalloc(&pdev->dev, sizeof(*msi_data), GFP_KERNEL);
 	if (!msi_data)
 		return -ENOMEM;
 
-	msi_data->cfg = (struct ls_scfg_msi_cfg *) match->data;
+	msi_data->cfg = (struct ls_scfg_msi_cfg *)device_get_match_data(&pdev->dev);
+	if (!msi_data->cfg)
+		return -ENODEV;
 
 	msi_data->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
 	if (IS_ERR(msi_data->regs)) {