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, 193 insertions, 0 deletions

diff --git a/drivers/hwmon/pmbus/mpq8785.c b/drivers/hwmon/pmbus/mpq8785.c
new file mode 100644
index 000000000..bbde55028
--- /dev/null
+++ b/drivers/hwmon/pmbus/mpq8785.c
@@ -0,0 +1,193 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Driver for MPS MPQ8785 Step-Down Converter
+ */
+
+#include <linux/i2c.h>
+#include <linux/bitops.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/of_device.h>
+#include "pmbus.h"
+
+#define MPM82504_READ_TEMPERATURE_1_SIGN_POS	9
+
+enum chips { mpm3695, mpm3695_25, mpm82504, mpq8785 };
+
+static u16 voltage_scale_loop_max_val[] = {
+	[mpm3695] = GENMASK(9, 0),
+	[mpm3695_25] = GENMASK(11, 0),
+	[mpm82504] = GENMASK(9, 0),
+	[mpq8785] = GENMASK(10, 0),
+};
+
+static int mpq8785_identify(struct i2c_client *client,
+			    struct pmbus_driver_info *info)
+{
+	int vout_mode;
+
+	vout_mode = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE);
+	if (vout_mode < 0 || vout_mode == 0xff)
+		return vout_mode < 0 ? vout_mode : -ENODEV;
+	switch (vout_mode >> 5) {
+	case 0:
+		info->format[PSC_VOLTAGE_OUT] = linear;
+		break;
+	case 1:
+	case 2:
+		info->format[PSC_VOLTAGE_OUT] = direct;
+		info->m[PSC_VOLTAGE_OUT] = 64;
+		info->b[PSC_VOLTAGE_OUT] = 0;
+		info->R[PSC_VOLTAGE_OUT] = 1;
+		break;
+	default:
+		return -ENODEV;
+	}
+
+	return 0;
+};
+
+static int mpq8785_read_byte_data(struct i2c_client *client, int page, int reg)
+{
+	int ret;
+
+	switch (reg) {
+	case PMBUS_VOUT_MODE:
+		ret = pmbus_read_byte_data(client, page, reg);
+		if (ret < 0)
+			return ret;
+
+		if ((ret >> 5) == 1) {
+			/*
+			 * The MPQ8785 chip reports VOUT_MODE as VID mode, but the driver
+			 * treats VID as direct mode. Without this, identification would fail
+			 * due to mode mismatch.
+			 * This override ensures the reported mode matches the driver
+			 * configuration, allowing successful initialization.
+			 */
+			return PB_VOUT_MODE_DIRECT;
+		}
+
+		return ret;
+	default:
+		return -ENODATA;
+	}
+}
+
+static int mpm82504_read_word_data(struct i2c_client *client, int page,
+				   int phase, int reg)
+{
+	int ret;
+
+	ret = pmbus_read_word_data(client, page, phase, reg);
+
+	if (ret < 0 || reg != PMBUS_READ_TEMPERATURE_1)
+		return ret;
+
+	/* Fix PMBUS_READ_TEMPERATURE_1 signedness */
+	return sign_extend32(ret, MPM82504_READ_TEMPERATURE_1_SIGN_POS) & 0xffff;
+}
+
+static struct pmbus_driver_info mpq8785_info = {
+	.pages = 1,
+	.format[PSC_VOLTAGE_IN] = direct,
+	.format[PSC_CURRENT_OUT] = direct,
+	.format[PSC_TEMPERATURE] = direct,
+	.m[PSC_VOLTAGE_IN] = 4,
+	.b[PSC_VOLTAGE_IN] = 0,
+	.R[PSC_VOLTAGE_IN] = 1,
+	.m[PSC_CURRENT_OUT] = 16,
+	.b[PSC_CURRENT_OUT] = 0,
+	.R[PSC_CURRENT_OUT] = 0,
+	.m[PSC_TEMPERATURE] = 1,
+	.b[PSC_TEMPERATURE] = 0,
+	.R[PSC_TEMPERATURE] = 0,
+	.func[0] =
+		PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT |
+		PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
+		PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
+		PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+};
+
+static const struct i2c_device_id mpq8785_id[] = {
+	{ .name = "mpm3695", .driver_data = mpm3695 },
+	{ .name = "mpm3695-25", .driver_data = mpm3695_25 },
+	{ .name = "mpm82504", .driver_data = mpm82504 },
+	{ .name = "mpq8785", .driver_data = mpq8785 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, mpq8785_id);
+
+static const struct of_device_id __maybe_unused mpq8785_of_match[] = {
+	{ .compatible = "mps,mpm3695", .data = (void *)mpm3695 },
+	{ .compatible = "mps,mpm3695-25", .data = (void *)mpm3695_25 },
+	{ .compatible = "mps,mpm82504", .data = (void *)mpm82504 },
+	{ .compatible = "mps,mpq8785", .data = (void *)mpq8785 },
+	{}
+};
+MODULE_DEVICE_TABLE(of, mpq8785_of_match);
+
+static int mpq8785_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	struct pmbus_driver_info *info;
+	enum chips chip_id;
+	u32 voltage_scale;
+	int ret;
+
+	info = devm_kmemdup(dev, &mpq8785_info, sizeof(*info), GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+
+	if (dev->of_node)
+		chip_id = (kernel_ulong_t)of_device_get_match_data(dev);
+	else
+		chip_id = (kernel_ulong_t)i2c_get_match_data(client);
+
+	switch (chip_id) {
+	case mpm3695:
+	case mpm3695_25:
+	case mpm82504:
+		info->format[PSC_VOLTAGE_OUT] = direct;
+		info->m[PSC_VOLTAGE_OUT] = 8;
+		info->b[PSC_VOLTAGE_OUT] = 0;
+		info->R[PSC_VOLTAGE_OUT] = 2;
+		info->read_word_data = mpm82504_read_word_data;
+		break;
+	case mpq8785:
+		info->identify = mpq8785_identify;
+		info->read_byte_data = mpq8785_read_byte_data;
+		break;
+	default:
+		return -ENODEV;
+	}
+
+	if (!device_property_read_u32(dev, "mps,vout-fb-divider-ratio-permille",
+				      &voltage_scale)) {
+		if (voltage_scale > voltage_scale_loop_max_val[chip_id])
+			return -EINVAL;
+
+		ret = i2c_smbus_write_word_data(client, PMBUS_VOUT_SCALE_LOOP,
+						voltage_scale);
+		if (ret)
+			return ret;
+	}
+
+	return pmbus_do_probe(client, info);
+};
+
+static struct i2c_driver mpq8785_driver = {
+	.driver = {
+		   .name = "mpq8785",
+		   .of_match_table = of_match_ptr(mpq8785_of_match),
+	},
+	.probe = mpq8785_probe,
+	.id_table = mpq8785_id,
+};
+
+module_i2c_driver(mpq8785_driver);
+
+MODULE_AUTHOR("Charles Hsu <ythsu0511@gmail.com>");
+MODULE_DESCRIPTION("PMBus driver for MPS MPQ8785");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("PMBUS");