[PATCH v1 0/2] pinctrl: Use named initializers for platform_device_id arrays
From: Uwe Kleine-König (The Capable Hub)
Date: Wed May 27 2026 - 11:44:11 EST
Hello,
this series targets to use named initializers for platform_device_id
arrays. In general these are better readable for humans and more robust
to changes in the respective struct definition.
This robustness is needed as I want to do
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -610,4 +610,7 @@ struct dmi_system_id {
struct platform_device_id {
char name[PLATFORM_NAME_SIZE];
- kernel_ulong_t driver_data;
+ union {
+ kernel_ulong_t driver_data;
+ const void *driver_data_ptr;
+ };
};
which allows dropping several casts and eases porting CHERI to mainline
linux. A possible follow-up change is the following example:
diff --git a/drivers/pinctrl/renesas/core.c b/drivers/pinctrl/renesas/core.c
index a466ebf99593..5bb1c1205352 100644
--- a/drivers/pinctrl/renesas/core.c
+++ b/drivers/pinctrl/renesas/core.c
@@ -1313,7 +1313,7 @@ static int sh_pfc_probe(struct platform_device *pdev)
if (pdev->dev.of_node)
info = of_device_get_match_data(&pdev->dev);
else
- info = (const void *)platform_get_device_id(pdev)->driver_data;
+ info = platform_get_device_id(pdev)->driver_data_ptr;
pfc = devm_kzalloc(&pdev->dev, sizeof(*pfc), GFP_KERNEL);
if (pfc == NULL)
@@ -1380,40 +1380,40 @@ static int sh_pfc_probe(struct platform_device *pdev)
static const struct platform_device_id sh_pfc_id_table[] = {
#ifdef CONFIG_PINCTRL_PFC_SH7203
- { .name = "pfc-sh7203", .driver_data = (kernel_ulong_t)&sh7203_pinmux_info },
+ { .name = "pfc-sh7203", .driver_data_ptr = &sh7203_pinmux_info },
#endif
#ifdef CONFIG_PINCTRL_PFC_SH7264
- { .name = "pfc-sh7264", .driver_data = (kernel_ulong_t)&sh7264_pinmux_info },
+ { .name = "pfc-sh7264", .driver_data_ptr = &sh7264_pinmux_info },
#endif
#ifdef CONFIG_PINCTRL_PFC_SH7269
- { .name = "pfc-sh7269", .driver_data = (kernel_ulong_t)&sh7269_pinmux_info },
+ { .name = "pfc-sh7269", .driver_data_ptr = &sh7269_pinmux_info },
#endif
#ifdef CONFIG_PINCTRL_PFC_SH7720
- { .name = "pfc-sh7720", .driver_data = (kernel_ulong_t)&sh7720_pinmux_info },
+ { .name = "pfc-sh7720", .driver_data_ptr = &sh7720_pinmux_info },
#endif
#ifdef CONFIG_PINCTRL_PFC_SH7722
- { .name = "pfc-sh7722", .driver_data = (kernel_ulong_t)&sh7722_pinmux_info },
+ { .name = "pfc-sh7722", .driver_data_ptr = &sh7722_pinmux_info },
#endif
#ifdef CONFIG_PINCTRL_PFC_SH7723
- { .name = "pfc-sh7723", .driver_data = (kernel_ulong_t)&sh7723_pinmux_info },
+ { .name = "pfc-sh7723", .driver_data_ptr = &sh7723_pinmux_info },
#endif
#ifdef CONFIG_PINCTRL_PFC_SH7724
- { .name = "pfc-sh7724", .driver_data = (kernel_ulong_t)&sh7724_pinmux_info },
+ { .name = "pfc-sh7724", .driver_data_ptr = &sh7724_pinmux_info },
#endif
#ifdef CONFIG_PINCTRL_PFC_SH7734
- { .name = "pfc-sh7734", .driver_data = (kernel_ulong_t)&sh7734_pinmux_info },
+ { .name = "pfc-sh7734", .driver_data_ptr = &sh7734_pinmux_info },
#endif
#ifdef CONFIG_PINCTRL_PFC_SH7757
- { .name = "pfc-sh7757", .driver_data = (kernel_ulong_t)&sh7757_pinmux_info },
+ { .name = "pfc-sh7757", .driver_data_ptr = &sh7757_pinmux_info },
#endif
#ifdef CONFIG_PINCTRL_PFC_SH7785
- { .name = "pfc-sh7785", .driver_data = (kernel_ulong_t)&sh7785_pinmux_info },
+ { .name = "pfc-sh7785", .driver_data_ptr = &sh7785_pinmux_info },
#endif
#ifdef CONFIG_PINCTRL_PFC_SH7786
- { .name = "pfc-sh7786", .driver_data = (kernel_ulong_t)&sh7786_pinmux_info },
+ { .name = "pfc-sh7786", .driver_data_ptr = &sh7786_pinmux_info },
#endif
#ifdef CONFIG_PINCTRL_PFC_SHX3
- { .name = "pfc-shx3", .driver_data = (kernel_ulong_t)&shx3_pinmux_info },
+ { .name = "pfc-shx3", .driver_data_ptr = &shx3_pinmux_info },
#endif
{ /* sentinel */ }
};
increasing readability due to less casting which also improves type safety.
If you consider the 2nd patch mostly churn, just drop it.
Best regards
Uwe
Uwe Kleine-König (The Capable Hub) (2):
pinctrl: Use named initializers for platform_device_id arrays
pinctrl: max77620: Unify usage of space and comma in
platform_device_id array
drivers/pinctrl/cirrus/pinctrl-cs42l43.c | 4 ++--
drivers/pinctrl/intel/pinctrl-broxton.c | 4 ++--
drivers/pinctrl/intel/pinctrl-denverton.c | 2 +-
drivers/pinctrl/pinctrl-max77620.c | 6 +++---
drivers/pinctrl/pinctrl-tps6594.c | 4 ++--
drivers/pinctrl/renesas/core.c | 24 +++++++++++------------
6 files changed, 22 insertions(+), 22 deletions(-)
base-commit: e7e28506af98ce4e1059e5ec59334b335c00a246
--
2.47.3