treewide: refresh kmalloc_obj() conversionsgrafted

This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci

This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.

Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.

Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>

1 files changed, 106 insertions, 0 deletions

diff --git a/drivers/gpio/gpio-by-pinctrl.c b/drivers/gpio/gpio-by-pinctrl.c
new file mode 100644
index 000000000..f54efd635
--- /dev/null
+++ b/drivers/gpio/gpio-by-pinctrl.c
@@ -0,0 +1,106 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (C) 2026 Linaro Inc.
+//   Author: AKASHI takahiro <takahiro.akashi@linaro.org>
+
+#include <linux/errno.h>
+#include <linux/gpio/driver.h>
+#include <linux/module.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/platform_device.h>
+#include <linux/types.h>
+
+#include "gpiolib.h"
+
+static int pin_control_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)
+{
+	unsigned long config;
+	int ret;
+
+	config = PIN_CONFIG_OUTPUT_ENABLE;
+	ret = pinctrl_gpio_get_config(gc, offset, &config);
+	if (ret)
+		return ret;
+	if (config)
+		return GPIO_LINE_DIRECTION_OUT;
+
+	return GPIO_LINE_DIRECTION_IN;
+}
+
+static int pin_control_gpio_get(struct gpio_chip *chip, unsigned int offset)
+{
+	unsigned long config;
+	int ret;
+
+	config = PIN_CONFIG_LEVEL;
+	ret = pinctrl_gpio_get_config(chip, offset, &config);
+	if (ret)
+		return ret;
+
+	return !!config;
+}
+
+static int pin_control_gpio_set(struct gpio_chip *chip, unsigned int offset,
+				int val)
+{
+	unsigned long config;
+
+	config = pinconf_to_config_packed(PIN_CONFIG_LEVEL, val);
+	return pinctrl_gpio_set_config(chip, offset, config);
+}
+
+static int pin_control_gpio_direction_output(struct gpio_chip *chip,
+					     unsigned int offset, int val)
+{
+	int ret;
+
+	ret = pin_control_gpio_set(chip, offset, val);
+	if (ret)
+		return ret;
+
+	return pinctrl_gpio_direction_output(chip, offset);
+}
+
+static int pin_control_gpio_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct gpio_chip *chip;
+
+	chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);
+	if (!chip)
+		return -ENOMEM;
+
+	chip->label = dev_name(dev);
+	chip->parent = dev;
+	chip->base = -1;
+
+	chip->request = gpiochip_generic_request;
+	chip->free = gpiochip_generic_free;
+	chip->get_direction = pin_control_gpio_get_direction;
+	chip->direction_input = pinctrl_gpio_direction_input;
+	chip->direction_output = pin_control_gpio_direction_output;
+	chip->get = pin_control_gpio_get;
+	chip->set = pin_control_gpio_set;
+	chip->set_config = gpiochip_generic_config;
+
+	return devm_gpiochip_add_data(dev, chip, NULL);
+}
+
+static const struct of_device_id pin_control_gpio_match[] = {
+	{ .compatible = "scmi-pinctrl-gpio" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, pin_control_gpio_match);
+
+static struct platform_driver pin_control_gpio_driver = {
+	.probe = pin_control_gpio_probe,
+	.driver = {
+		.name = "pin-control-gpio",
+		.of_match_table = pin_control_gpio_match,
+	},
+};
+module_platform_driver(pin_control_gpio_driver);
+
+MODULE_AUTHOR("AKASHI Takahiro <takahiro.akashi@linaro.org>");
+MODULE_DESCRIPTION("Pinctrl based GPIO driver");
+MODULE_LICENSE("GPL");