diff mbox series

[v6,5/7] gpio: aspeed: Change the macro to support deferred probe

Message ID 20240927111744.3511373-6-billy_tsai@aspeedtech.com (mailing list archive)
State New, archived
Headers show
Series Add Aspeed G7 gpio support | expand

Commit Message

Billy Tsai Sept. 27, 2024, 11:17 a.m. UTC
Use module_platform_driver() to replace module_platform_driver_probe().
The former utilizes platform_driver_register(), which allows the driver to
defer probing when it doesn't acquire the necessary resources due to probe
order. In contrast, the latter uses __platform_driver_probe(), which
includes the comment "Note that this is incompatible with deferred
probing." Since our GPIO driver requires access to the clock resource, the
former is more suitable.

Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
---
 drivers/gpio/gpio-aspeed.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

Comments

Andrew Jeffery Sept. 30, 2024, 4:37 a.m. UTC | #1
On Fri, 2024-09-27 at 19:17 +0800, Billy Tsai wrote:
> Use module_platform_driver() to replace module_platform_driver_probe().
> The former utilizes platform_driver_register(), which allows the driver to
> defer probing when it doesn't acquire the necessary resources due to probe
> order. In contrast, the latter uses __platform_driver_probe(), which
> includes the comment "Note that this is incompatible with deferred
> probing." Since our GPIO driver requires access to the clock resource, the
> former is more suitable.
> 
> Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>

Seems okay to make it less of a deviant, though maybe we should fix the
sgpio drive as well? Anyway:

Reviewed-by: Andrew Jeffery <andrew@codeconstruct.com.au>

Andrew
diff mbox series

Patch

diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c
index 1be9a7aa9e8b..d6a35e230370 100644
--- a/drivers/gpio/gpio-aspeed.c
+++ b/drivers/gpio/gpio-aspeed.c
@@ -1313,7 +1313,7 @@  static const struct of_device_id aspeed_gpio_of_table[] = {
 };
 MODULE_DEVICE_TABLE(of, aspeed_gpio_of_table);
 
-static int __init aspeed_gpio_probe(struct platform_device *pdev)
+static int aspeed_gpio_probe(struct platform_device *pdev)
 {
 	const struct of_device_id *gpio_id;
 	struct gpio_irq_chip *girq;
@@ -1414,13 +1414,14 @@  static int __init aspeed_gpio_probe(struct platform_device *pdev)
 }
 
 static struct platform_driver aspeed_gpio_driver = {
+	.probe = aspeed_gpio_probe,
 	.driver = {
 		.name = KBUILD_MODNAME,
 		.of_match_table = aspeed_gpio_of_table,
 	},
 };
 
-module_platform_driver_probe(aspeed_gpio_driver, aspeed_gpio_probe);
+module_platform_driver(aspeed_gpio_driver);
 
 MODULE_DESCRIPTION("Aspeed GPIO Driver");
 MODULE_LICENSE("GPL");