*/
-#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
/* usb specific object needed to register this driver with the usb subsystem */
static struct usb_driver cytherm_driver = {
- .owner = THIS_MODULE,
.name = "cytherm",
.probe = cytherm_probe,
.disconnect = cytherm_disconnect,
#define BRIGHTNESS 0x2c /* RAM location for brightness value */
#define BRIGHTNESS_SEM 0x2b /* RAM location for brightness semaphore */
-static ssize_t show_brightness(struct device *dev, char *buf)
+static ssize_t show_brightness(struct device *dev, struct device_attribute *attr, char *buf)
{
struct usb_interface *intf = to_usb_interface(dev);
struct usb_cytherm *cytherm = usb_get_intfdata(intf);
return sprintf(buf, "%i", cytherm->brightness);
}
-static ssize_t set_brightness(struct device *dev, const char *buf,
+static ssize_t set_brightness(struct device *dev, struct device_attribute *attr, const char *buf,
size_t count)
{
struct usb_interface *intf = to_usb_interface(dev);
#define TEMP 0x33 /* RAM location for temperature */
#define SIGN 0x34 /* RAM location for temperature sign */
-static ssize_t show_temp(struct device *dev, char *buf)
+static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf)
{
struct usb_interface *intf = to_usb_interface(dev);
}
-static ssize_t set_temp(struct device *dev, const char *buf, size_t count)
+static ssize_t set_temp(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
return count;
}
#define BUTTON 0x7a
-static ssize_t show_button(struct device *dev, char *buf)
+static ssize_t show_button(struct device *dev, struct device_attribute *attr, char *buf)
{
struct usb_interface *intf = to_usb_interface(dev);
}
-static ssize_t set_button(struct device *dev, const char *buf, size_t count)
+static ssize_t set_button(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
return count;
}
static DEVICE_ATTR(button, S_IRUGO, show_button, set_button);
-static ssize_t show_port0(struct device *dev, char *buf)
+static ssize_t show_port0(struct device *dev, struct device_attribute *attr, char *buf)
{
struct usb_interface *intf = to_usb_interface(dev);
struct usb_cytherm *cytherm = usb_get_intfdata(intf);
}
-static ssize_t set_port0(struct device *dev, const char *buf, size_t count)
+static ssize_t set_port0(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct usb_interface *intf = to_usb_interface(dev);
struct usb_cytherm *cytherm = usb_get_intfdata(intf);
static DEVICE_ATTR(port0, S_IRUGO | S_IWUSR | S_IWGRP, show_port0, set_port0);
-static ssize_t show_port1(struct device *dev, char *buf)
+static ssize_t show_port1(struct device *dev, struct device_attribute *attr, char *buf)
{
struct usb_interface *intf = to_usb_interface(dev);
struct usb_cytherm *cytherm = usb_get_intfdata(intf);
}
-static ssize_t set_port1(struct device *dev, const char *buf, size_t count)
+static ssize_t set_port1(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct usb_interface *intf = to_usb_interface(dev);
struct usb_cytherm *cytherm = usb_get_intfdata(intf);
struct usb_cytherm *dev = NULL;
int retval = -ENOMEM;
- dev = kmalloc (sizeof(struct usb_cytherm), GFP_KERNEL);
+ dev = kzalloc (sizeof(struct usb_cytherm), GFP_KERNEL);
if (dev == NULL) {
dev_err (&interface->dev, "Out of memory\n");
- goto error;
+ goto error_mem;
}
- memset (dev, 0x00, sizeof (*dev));
dev->udev = usb_get_dev(udev);
dev->brightness = 0xFF;
- device_create_file(&interface->dev, &dev_attr_brightness);
- device_create_file(&interface->dev, &dev_attr_temp);
- device_create_file(&interface->dev, &dev_attr_button);
- device_create_file(&interface->dev, &dev_attr_port0);
- device_create_file(&interface->dev, &dev_attr_port1);
+ retval = device_create_file(&interface->dev, &dev_attr_brightness);
+ if (retval)
+ goto error;
+ retval = device_create_file(&interface->dev, &dev_attr_temp);
+ if (retval)
+ goto error;
+ retval = device_create_file(&interface->dev, &dev_attr_button);
+ if (retval)
+ goto error;
+ retval = device_create_file(&interface->dev, &dev_attr_port0);
+ if (retval)
+ goto error;
+ retval = device_create_file(&interface->dev, &dev_attr_port1);
+ if (retval)
+ goto error;
- dev_info (&interface->dev,
+ dev_info (&interface->dev,
"Cypress thermometer device now attached\n");
return 0;
-
- error:
+error:
+ device_remove_file(&interface->dev, &dev_attr_brightness);
+ device_remove_file(&interface->dev, &dev_attr_temp);
+ device_remove_file(&interface->dev, &dev_attr_button);
+ device_remove_file(&interface->dev, &dev_attr_port0);
+ device_remove_file(&interface->dev, &dev_attr_port1);
+ usb_set_intfdata (interface, NULL);
+ usb_put_dev(dev->udev);
kfree(dev);
+error_mem:
return retval;
}