[v2] pwm: Use device_get_match_data()

Commit Message

Rob Herring (Arm) Oct. 26, 2023, 7:54 p.m. UTC

Use preferred device_get_match_data() instead of of_match_device() to
get the driver match data. With this, adjust the includes to explicitly
include the correct headers.

As these drivers only do DT based matching, of_match_device() will never
return NULL if we've gotten to probe(). Therefore, the NULL check and
error returns can be dropped.

Signed-off-by: Rob Herring <[e-mail]>
---
v2:
 - Add to commit message about of_match_device() error checking

 drivers/pwm/pwm-img.c      | 8 ++------
 drivers/pwm/pwm-rockchip.c | 9 ++-------
 2 files changed, 4 insertions(+), 13 deletions(-)

Comments

Uwe Kleine-König Oct. 26, 2023, 9:15 p.m. UTC | #1

Hello Rob,

On Thu, Oct 26, 2023 at 02:54:17PM -0500, Rob Herring wrote:
> Use preferred device_get_match_data() instead of of_match_device() to
> get the driver match data. With this, adjust the includes to explicitly
> include the correct headers.
> 
> As these drivers only do DT based matching, of_match_device() will never
> return NULL if we've gotten to probe(). Therefore, the NULL check and
> error returns can be dropped.
> 
> Signed-off-by: Rob Herring <[e-mail]>

Reviewed-by: Uwe Kleine-König <[e-mail]>

Thanks!
Uwe

Thierry Reding Nov. 28, 2023, 4:59 p.m. UTC | #2

On Thu, 26 Oct 2023 14:54:17 -0500, Rob Herring wrote:
> Use preferred device_get_match_data() instead of of_match_device() to
> get the driver match data. With this, adjust the includes to explicitly
> include the correct headers.
> 
> As these drivers only do DT based matching, of_match_device() will never
> return NULL if we've gotten to probe(). Therefore, the NULL check and
> error returns can be dropped.
> 
> [...]

Applied, thanks!

[1/1] pwm: Use device_get_match_data()
      commit: cf5a1a8c8e8875b3fe38835942b393cc1577da55

Best regards,

Patch

diff --git a/drivers/pwm/pwm-img.c b/drivers/pwm/pwm-img.c
index 116fa060e302..0d218c0b690e 100644
--- a/drivers/pwm/pwm-img.c
+++ b/drivers/pwm/pwm-img.c
@@ -13,9 +13,9 @@ 
 #include <linux/mfd/syscon.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
+#include <linux/property.h>
 #include <linux/pwm.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
@@ -260,7 +260,6 @@  static int img_pwm_probe(struct platform_device *pdev)
 	u64 val;
 	unsigned long clk_rate;
 	struct img_pwm_chip *imgchip;
-	const struct of_device_id *of_dev_id;
 
 	imgchip = devm_kzalloc(&pdev->dev, sizeof(*imgchip), GFP_KERNEL);
 	if (!imgchip)
@@ -272,10 +271,7 @@  static int img_pwm_probe(struct platform_device *pdev)
 	if (IS_ERR(imgchip->base))
 		return PTR_ERR(imgchip->base);
 
-	of_dev_id = of_match_device(img_pwm_of_match, &pdev->dev);
-	if (!of_dev_id)
-		return -ENODEV;
-	imgchip->data = of_dev_id->data;
+	imgchip->data = device_get_match_data(&pdev->dev);
 
 	imgchip->periph_regs = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
 							       "img,cr-periph");
diff --git a/drivers/pwm/pwm-rockchip.c b/drivers/pwm/pwm-rockchip.c
index cce4381e188a..a7c647e37837 100644
--- a/drivers/pwm/pwm-rockchip.c
+++ b/drivers/pwm/pwm-rockchip.c
@@ -10,8 +10,8 @@ 
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/pwm.h>
 #include <linux/time.h>
 
@@ -296,16 +296,11 @@  MODULE_DEVICE_TABLE(of, rockchip_pwm_dt_ids);
 
 static int rockchip_pwm_probe(struct platform_device *pdev)
 {
-	const struct of_device_id *id;
 	struct rockchip_pwm_chip *pc;
 	u32 enable_conf, ctrl;
 	bool enabled;
 	int ret, count;
 
-	id = of_match_device(rockchip_pwm_dt_ids, &pdev->dev);
-	if (!id)
-		return -EINVAL;
-
 	pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL);
 	if (!pc)
 		return -ENOMEM;
@@ -344,7 +339,7 @@  static int rockchip_pwm_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, pc);
 
-	pc->data = id->data;
+	pc->data = device_get_match_data(&pdev->dev);
 	pc->chip.dev = &pdev->dev;
 	pc->chip.ops = &rockchip_pwm_ops;
 	pc->chip.npwm = 1;