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, 96 insertions, 0 deletions

diff --git a/drivers/net/mdio/mdio-mux-gpio.c b/drivers/net/mdio/mdio-mux-gpio.c
new file mode 100644
index 000000000..fefa40ea5
--- /dev/null
+++ b/drivers/net/mdio/mdio-mux-gpio.c
@@ -0,0 +1,96 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2011, 2012 Cavium, Inc.
+ */
+
+#include <linux/device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/mdio-mux.h>
+#include <linux/module.h>
+#include <linux/of_mdio.h>
+#include <linux/phy.h>
+#include <linux/platform_device.h>
+
+#define DRV_VERSION "1.1"
+#define DRV_DESCRIPTION "GPIO controlled MDIO bus multiplexer driver"
+
+struct mdio_mux_gpio_state {
+	struct gpio_descs *gpios;
+	void *mux_handle;
+};
+
+static int mdio_mux_gpio_switch_fn(int current_child, int desired_child,
+				   void *data)
+{
+	struct mdio_mux_gpio_state *s = data;
+	DECLARE_BITMAP(values, BITS_PER_TYPE(desired_child));
+
+	if (current_child == desired_child)
+		return 0;
+
+	values[0] = desired_child;
+
+	gpiod_multi_set_value_cansleep(s->gpios, values);
+
+	return 0;
+}
+
+static int mdio_mux_gpio_probe(struct platform_device *pdev)
+{
+	struct mdio_mux_gpio_state *s;
+	struct gpio_descs *gpios;
+	int r;
+
+	gpios = devm_gpiod_get_array(&pdev->dev, NULL, GPIOD_OUT_LOW);
+	if (IS_ERR(gpios))
+		return PTR_ERR(gpios);
+
+	s = devm_kzalloc(&pdev->dev, sizeof(*s), GFP_KERNEL);
+	if (!s)
+		return -ENOMEM;
+
+	s->gpios = gpios;
+
+	r = mdio_mux_init(&pdev->dev, pdev->dev.of_node,
+			  mdio_mux_gpio_switch_fn, &s->mux_handle, s, NULL);
+
+	if (r != 0)
+		return r;
+
+	pdev->dev.platform_data = s;
+	return 0;
+}
+
+static void mdio_mux_gpio_remove(struct platform_device *pdev)
+{
+	struct mdio_mux_gpio_state *s = dev_get_platdata(&pdev->dev);
+	mdio_mux_uninit(s->mux_handle);
+}
+
+static const struct of_device_id mdio_mux_gpio_match[] = {
+	{
+		.compatible = "mdio-mux-gpio",
+	},
+	{
+		/* Legacy compatible property. */
+		.compatible = "cavium,mdio-mux-sn74cbtlv3253",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, mdio_mux_gpio_match);
+
+static struct platform_driver mdio_mux_gpio_driver = {
+	.driver = {
+		.name		= "mdio-mux-gpio",
+		.of_match_table = mdio_mux_gpio_match,
+	},
+	.probe		= mdio_mux_gpio_probe,
+	.remove		= mdio_mux_gpio_remove,
+};
+
+module_platform_driver(mdio_mux_gpio_driver);
+
+MODULE_DESCRIPTION(DRV_DESCRIPTION);
+MODULE_VERSION(DRV_VERSION);
+MODULE_AUTHOR("David Daney");
+MODULE_LICENSE("GPL v2");