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, 134 insertions, 0 deletions

diff --git a/drivers/gpio/gpio-imx-scu.c b/drivers/gpio/gpio-imx-scu.c
new file mode 100644
index 000000000..0a75afecf
--- /dev/null
+++ b/drivers/gpio/gpio-imx-scu.c
@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2021~2022 NXP
+ *
+ * The driver exports a standard gpiochip interface
+ * to control the PIN resources on SCU domain.
+ */
+
+#include <linux/cleanup.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/gpio/driver.h>
+#include <linux/platform_device.h>
+#include <linux/firmware/imx/svc/rm.h>
+#include <dt-bindings/firmware/imx/rsrc.h>
+
+struct scu_gpio_priv {
+	struct gpio_chip	chip;
+	struct mutex		lock;
+	struct device		*dev;
+	struct imx_sc_ipc	*handle;
+};
+
+static unsigned int scu_rsrc_arr[] = {
+	IMX_SC_R_BOARD_R0,
+	IMX_SC_R_BOARD_R1,
+	IMX_SC_R_BOARD_R2,
+	IMX_SC_R_BOARD_R3,
+	IMX_SC_R_BOARD_R4,
+	IMX_SC_R_BOARD_R5,
+	IMX_SC_R_BOARD_R6,
+	IMX_SC_R_BOARD_R7,
+};
+
+static int imx_scu_gpio_get(struct gpio_chip *chip, unsigned int offset)
+{
+	struct scu_gpio_priv *priv = gpiochip_get_data(chip);
+	int level;
+	int err;
+
+	scoped_guard(mutex, &priv->lock) {
+		/* to read PIN state via scu api */
+		err = imx_sc_misc_get_control(priv->handle,
+					      scu_rsrc_arr[offset], 0, &level);
+	}
+	if (err) {
+		dev_err(priv->dev, "SCU get failed: %d\n", err);
+		return err;
+	}
+
+	return level;
+}
+
+static int imx_scu_gpio_set(struct gpio_chip *chip, unsigned int offset,
+			    int value)
+{
+	struct scu_gpio_priv *priv = gpiochip_get_data(chip);
+	int err;
+
+	scoped_guard(mutex, &priv->lock) {
+		/* to set PIN output level via scu api */
+		err = imx_sc_misc_set_control(priv->handle,
+					      scu_rsrc_arr[offset], 0, value);
+	}
+	if (err)
+		dev_err(priv->dev, "SCU set (%d) failed: %d\n",
+				scu_rsrc_arr[offset], err);
+
+	return err;
+}
+
+static int imx_scu_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
+{
+	return GPIO_LINE_DIRECTION_OUT;
+}
+
+static int imx_scu_gpio_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct scu_gpio_priv *priv;
+	struct gpio_chip *gc;
+	int ret;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	ret = imx_scu_get_handle(&priv->handle);
+	if (ret)
+		return ret;
+
+	priv->dev = dev;
+
+	ret = devm_mutex_init(&pdev->dev, &priv->lock);
+	if (ret)
+		return ret;
+
+	gc = &priv->chip;
+	gc->base = -1;
+	gc->parent = dev;
+	gc->ngpio = ARRAY_SIZE(scu_rsrc_arr);
+	gc->label = dev_name(dev);
+	gc->get = imx_scu_gpio_get;
+	gc->set = imx_scu_gpio_set;
+	gc->get_direction = imx_scu_gpio_get_direction;
+
+	platform_set_drvdata(pdev, priv);
+
+	return devm_gpiochip_add_data(dev, gc, priv);
+}
+
+static const struct of_device_id imx_scu_gpio_dt_ids[] = {
+	{ .compatible = "fsl,imx8qxp-sc-gpio" },
+	{ /* sentinel */ }
+};
+
+static struct platform_driver imx_scu_gpio_driver = {
+	.driver	= {
+		.name = "gpio-imx-scu",
+		.of_match_table = imx_scu_gpio_dt_ids,
+	},
+	.probe = imx_scu_gpio_probe,
+};
+
+static int __init _imx_scu_gpio_init(void)
+{
+	return platform_driver_register(&imx_scu_gpio_driver);
+}
+
+subsys_initcall_sync(_imx_scu_gpio_init);
+
+MODULE_AUTHOR("Shenwei Wang <shenwei.wang@nxp.com>");
+MODULE_DESCRIPTION("NXP GPIO over IMX SCU API");