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path: root/drivers/hwmon/i5k_amb.c
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Diffstat (limited to 'drivers/hwmon/i5k_amb.c')
-rw-r--r--drivers/hwmon/i5k_amb.c73
1 files changed, 28 insertions, 45 deletions
diff --git a/drivers/hwmon/i5k_amb.c b/drivers/hwmon/i5k_amb.c
index de058c278aa9..b22e0423e324 100644
--- a/drivers/hwmon/i5k_amb.c
+++ b/drivers/hwmon/i5k_amb.c
@@ -1,23 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* A hwmon driver for the Intel 5000 series chipset FB-DIMM AMB
* temperature sensors
* Copyright (C) 2007 IBM
*
- * Author: Darrick J. Wong <djwong@us.ibm.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Author: Darrick J. Wong <darrick.wong@oracle.com>
*/
#include <linux/module.h>
@@ -114,14 +101,7 @@ struct i5k_amb_data {
unsigned int num_attrs;
};
-static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
- char *buf)
-{
- return sprintf(buf, "%s\n", DRVNAME);
-}
-
-
-static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
+static DEVICE_STRING_ATTR_RO(name, 0444, DRVNAME);
static struct platform_device *amb_pdev;
@@ -274,8 +254,9 @@ static int i5k_amb_hwmon_init(struct platform_device *pdev)
num_ambs += hweight16(data->amb_present[i] & 0x7fff);
/* Set up sysfs stuff */
- data->attrs = kzalloc(sizeof(*data->attrs) * num_ambs * KNOBS_PER_AMB,
- GFP_KERNEL);
+ data->attrs = kzalloc(array3_size(num_ambs, KNOBS_PER_AMB,
+ sizeof(*data->attrs)),
+ GFP_KERNEL);
if (!data->attrs)
return -ENOMEM;
data->num_attrs = 0;
@@ -295,7 +276,7 @@ static int i5k_amb_hwmon_init(struct platform_device *pdev)
snprintf(iattr->name, AMB_SYSFS_NAME_LEN,
"temp%d_label", d);
iattr->s_attr.dev_attr.attr.name = iattr->name;
- iattr->s_attr.dev_attr.attr.mode = S_IRUGO;
+ iattr->s_attr.dev_attr.attr.mode = 0444;
iattr->s_attr.dev_attr.show = show_label;
iattr->s_attr.index = k;
sysfs_attr_init(&iattr->s_attr.dev_attr.attr);
@@ -310,7 +291,7 @@ static int i5k_amb_hwmon_init(struct platform_device *pdev)
snprintf(iattr->name, AMB_SYSFS_NAME_LEN,
"temp%d_input", d);
iattr->s_attr.dev_attr.attr.name = iattr->name;
- iattr->s_attr.dev_attr.attr.mode = S_IRUGO;
+ iattr->s_attr.dev_attr.attr.mode = 0444;
iattr->s_attr.dev_attr.show = show_amb_temp;
iattr->s_attr.index = k;
sysfs_attr_init(&iattr->s_attr.dev_attr.attr);
@@ -325,7 +306,7 @@ static int i5k_amb_hwmon_init(struct platform_device *pdev)
snprintf(iattr->name, AMB_SYSFS_NAME_LEN,
"temp%d_min", d);
iattr->s_attr.dev_attr.attr.name = iattr->name;
- iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO;
+ iattr->s_attr.dev_attr.attr.mode = 0644;
iattr->s_attr.dev_attr.show = show_amb_min;
iattr->s_attr.dev_attr.store = store_amb_min;
iattr->s_attr.index = k;
@@ -341,7 +322,7 @@ static int i5k_amb_hwmon_init(struct platform_device *pdev)
snprintf(iattr->name, AMB_SYSFS_NAME_LEN,
"temp%d_mid", d);
iattr->s_attr.dev_attr.attr.name = iattr->name;
- iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO;
+ iattr->s_attr.dev_attr.attr.mode = 0644;
iattr->s_attr.dev_attr.show = show_amb_mid;
iattr->s_attr.dev_attr.store = store_amb_mid;
iattr->s_attr.index = k;
@@ -357,7 +338,7 @@ static int i5k_amb_hwmon_init(struct platform_device *pdev)
snprintf(iattr->name, AMB_SYSFS_NAME_LEN,
"temp%d_max", d);
iattr->s_attr.dev_attr.attr.name = iattr->name;
- iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO;
+ iattr->s_attr.dev_attr.attr.mode = 0644;
iattr->s_attr.dev_attr.show = show_amb_max;
iattr->s_attr.dev_attr.store = store_amb_max;
iattr->s_attr.index = k;
@@ -373,7 +354,7 @@ static int i5k_amb_hwmon_init(struct platform_device *pdev)
snprintf(iattr->name, AMB_SYSFS_NAME_LEN,
"temp%d_alarm", d);
iattr->s_attr.dev_attr.attr.name = iattr->name;
- iattr->s_attr.dev_attr.attr.mode = S_IRUGO;
+ iattr->s_attr.dev_attr.attr.mode = 0444;
iattr->s_attr.dev_attr.show = show_amb_alarm;
iattr->s_attr.index = k;
sysfs_attr_init(&iattr->s_attr.dev_attr.attr);
@@ -385,7 +366,7 @@ static int i5k_amb_hwmon_init(struct platform_device *pdev)
}
}
- res = device_create_file(&pdev->dev, &dev_attr_name);
+ res = device_create_file(&pdev->dev, &dev_attr_name.attr);
if (res)
goto exit_remove;
@@ -398,7 +379,7 @@ static int i5k_amb_hwmon_init(struct platform_device *pdev)
return res;
exit_remove:
- device_remove_file(&pdev->dev, &dev_attr_name);
+ device_remove_file(&pdev->dev, &dev_attr_name.attr);
for (i = 0; i < data->num_attrs; i++)
device_remove_file(&pdev->dev, &data->attrs[i].s_attr.dev_attr);
kfree(data->attrs);
@@ -408,7 +389,7 @@ exit_remove:
static int i5k_amb_add(void)
{
- int res = -ENODEV;
+ int res;
/* only ever going to be one of these */
amb_pdev = platform_device_alloc(DRVNAME, 0);
@@ -439,11 +420,13 @@ static int i5k_find_amb_registers(struct i5k_amb_data *data,
if (!pcidev)
return -ENODEV;
- if (pci_read_config_dword(pcidev, I5K_REG_AMB_BASE_ADDR, &val32))
+ pci_read_config_dword(pcidev, I5K_REG_AMB_BASE_ADDR, &val32);
+ if (val32 == (u32)~0)
goto out;
data->amb_base = val32;
- if (pci_read_config_dword(pcidev, I5K_REG_AMB_LEN_ADDR, &val32))
+ pci_read_config_dword(pcidev, I5K_REG_AMB_LEN_ADDR, &val32);
+ if (val32 == (u32)~0)
goto out;
data->amb_len = val32;
@@ -470,11 +453,13 @@ static int i5k_channel_probe(u16 *amb_present, unsigned long dev_id)
if (!pcidev)
return -ENODEV;
- if (pci_read_config_word(pcidev, I5K_REG_CHAN0_PRESENCE_ADDR, &val16))
+ pci_read_config_word(pcidev, I5K_REG_CHAN0_PRESENCE_ADDR, &val16);
+ if (val16 == (u16)~0)
goto out;
amb_present[0] = val16;
- if (pci_read_config_word(pcidev, I5K_REG_CHAN1_PRESENCE_ADDR, &val16))
+ pci_read_config_word(pcidev, I5K_REG_CHAN1_PRESENCE_ADDR, &val16);
+ if (val16 == (u16)~0)
goto out;
amb_present[1] = val16;
@@ -495,7 +480,7 @@ static struct {
};
#ifdef MODULE
-static struct pci_device_id i5k_amb_ids[] = {
+static const struct pci_device_id i5k_amb_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5000_ERR) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5400_ERR) },
{ 0, }
@@ -540,7 +525,7 @@ static int i5k_amb_probe(struct platform_device *pdev)
goto err;
}
- data->amb_mmio = ioremap_nocache(data->amb_base, data->amb_len);
+ data->amb_mmio = ioremap(data->amb_base, data->amb_len);
if (!data->amb_mmio) {
res = -EBUSY;
goto err_map_failed;
@@ -563,25 +548,23 @@ err:
return res;
}
-static int i5k_amb_remove(struct platform_device *pdev)
+static void i5k_amb_remove(struct platform_device *pdev)
{
int i;
struct i5k_amb_data *data = platform_get_drvdata(pdev);
hwmon_device_unregister(data->hwmon_dev);
- device_remove_file(&pdev->dev, &dev_attr_name);
+ device_remove_file(&pdev->dev, &dev_attr_name.attr);
for (i = 0; i < data->num_attrs; i++)
device_remove_file(&pdev->dev, &data->attrs[i].s_attr.dev_attr);
kfree(data->attrs);
iounmap(data->amb_mmio);
release_mem_region(data->amb_base, data->amb_len);
kfree(data);
- return 0;
}
static struct platform_driver i5k_amb_driver = {
.driver = {
- .owner = THIS_MODULE,
.name = DRVNAME,
},
.probe = i5k_amb_probe,
@@ -609,7 +592,7 @@ static void __exit i5k_amb_exit(void)
platform_driver_unregister(&i5k_amb_driver);
}
-MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>");
+MODULE_AUTHOR("Darrick J. Wong <darrick.wong@oracle.com>");
MODULE_DESCRIPTION("Intel 5000 chipset FB-DIMM AMB temperature sensor");
MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2025-12-25 06:57:26 +0000