ramips: gpio: use devm_platform_ioremap_resource()

Simplify the code.

Signed-off-by: Shiji Yang <yangshiji66@qq.com>

diff --git a/target/linux/ramips/patches-6.6/802-GPIO-MIPS-ralink-add-gpio-driver-for-ralink-SoC.patch b/target/linux/ramips/patches-6.6/802-GPIO-MIPS-ralink-add-gpio-driver-for-ralink-SoC.patch
index a79bb7e5bfa388ee670665c2f41fe75c8173e376..3bebbc13acb0893d4bd1903e0f62f778db9d2b03 100644 (file)
--- a/target/linux/ramips/patches-6.6/802-GPIO-MIPS-ralink-add-gpio-driver-for-ralink-SoC.patch
+++ b/target/linux/ramips/patches-6.6/802-GPIO-MIPS-ralink-add-gpio-driver-for-ralink-SoC.patch
@@ -9,8 +9,8 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
 ---
  drivers/gpio/Kconfig       |   6 +
  drivers/gpio/Makefile      |   1 +
- drivers/gpio/gpio-ralink.c | 336 +++++++++++++++++++++++++++++++++++++
- 3 files changed, 343 insertions(+)
+ drivers/gpio/gpio-ralink.c | 328 +++++++++++++++++++++++++++++++++++++
+ 3 files changed, 335 insertions(+)
  create mode 100644 drivers/gpio/gpio-ralink.c
 
 --- a/drivers/gpio/Kconfig
@@ -40,7 +40,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
  obj-$(CONFIG_GPIO_RCAR)                       += gpio-rcar.o
 --- /dev/null
 +++ b/drivers/gpio/gpio-ralink.c
-@@ -0,0 +1,336 @@
+@@ -0,0 +1,328 @@
 +/*
 + * This program is free software; you can redistribute it and/or modify it
 + * under the terms of the GNU General Public License version 2 as published
@@ -299,25 +299,17 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
 +static int ralink_gpio_probe(struct platform_device *pdev)
 +{
 +      struct device_node *np = pdev->dev.of_node;
-+      struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 +      struct ralink_gpio_chip *rg;
 +      const __be32 *ngpio;
 +
-+      if (!res) {
-+              dev_err(&pdev->dev, "failed to find resource\n");
-+              return -ENOMEM;
-+      }
-+
 +      rg = devm_kzalloc(&pdev->dev,
 +                      sizeof(struct ralink_gpio_chip), GFP_KERNEL);
 +      if (!rg)
 +              return -ENOMEM;
 +
-+      rg->membase = devm_ioremap_resource(&pdev->dev, res);
-+      if (!rg->membase) {
-+              dev_err(&pdev->dev, "cannot remap I/O memory region\n");
-+              return -ENOMEM;
-+      }
++      rg->membase = devm_platform_ioremap_resource(pdev, 0);
++      if (IS_ERR(rg->membase))
++              return PTR_ERR(rg->membase);
 +
 +      if (of_property_read_u8_array(np, "ralink,register-map",
 +                      rg->regs, GPIO_REG_MAX)) {