sysfs.c (92320cec611d4ed44a9bd635727d61f6caa669a7) sysfs.c (eaafbc3a8adab16babe2c20e54ad3ba40d1fbbc9)
1/*
2 * drivers/usb/core/sysfs.c
3 *
4 * (C) Copyright 2002 David Brownell
5 * (C) Copyright 2002,2004 Greg Kroah-Hartman
6 * (C) Copyright 2002,2004 IBM Corp.
7 *
8 * All of the sysfs file attributes for usb devices and interfaces.

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160
161#ifdef CONFIG_USB_SUSPEND
162
163static ssize_t
164show_autosuspend(struct device *dev, struct device_attribute *attr, char *buf)
165{
166 struct usb_device *udev = to_usb_device(dev);
167
1/*
2 * drivers/usb/core/sysfs.c
3 *
4 * (C) Copyright 2002 David Brownell
5 * (C) Copyright 2002,2004 Greg Kroah-Hartman
6 * (C) Copyright 2002,2004 IBM Corp.
7 *
8 * All of the sysfs file attributes for usb devices and interfaces.

--- 151 unchanged lines hidden (view full) ---

160
161#ifdef CONFIG_USB_SUSPEND
162
163static ssize_t
164show_autosuspend(struct device *dev, struct device_attribute *attr, char *buf)
165{
166 struct usb_device *udev = to_usb_device(dev);
167
168 return sprintf(buf, "%u\n", udev->autosuspend_delay / HZ);
168 return sprintf(buf, "%d\n", udev->autosuspend_delay / HZ);
169}
170
171static ssize_t
172set_autosuspend(struct device *dev, struct device_attribute *attr,
173 const char *buf, size_t count)
174{
175 struct usb_device *udev = to_usb_device(dev);
169}
170
171static ssize_t
172set_autosuspend(struct device *dev, struct device_attribute *attr,
173 const char *buf, size_t count)
174{
175 struct usb_device *udev = to_usb_device(dev);
176 unsigned value, old;
176 int value;
177
177
178 if (sscanf(buf, "%u", &value) != 1 || value >= INT_MAX/HZ)
178 if (sscanf(buf, "%d", &value) != 1 || value >= INT_MAX/HZ ||
179 value <= - INT_MAX/HZ)
179 return -EINVAL;
180 value *= HZ;
181
180 return -EINVAL;
181 value *= HZ;
182
182 old = udev->autosuspend_delay;
183 udev->autosuspend_delay = value;
183 udev->autosuspend_delay = value;
184 if (value > 0 && old == 0)
184 if (value >= 0)
185 usb_try_autosuspend_device(udev);
185 usb_try_autosuspend_device(udev);
186
186 else {
187 usb_lock_device(udev);
188 usb_external_resume_device(udev);
189 usb_unlock_device(udev);
190 }
187 return count;
188}
189
190static DEVICE_ATTR(autosuspend, S_IRUGO | S_IWUSR,
191 show_autosuspend, set_autosuspend);
192
193static char power_group[] = "power";
194

--- 263 unchanged lines hidden --- 		191 return count;
192}
193
194static DEVICE_ATTR(autosuspend, S_IRUGO | S_IWUSR,
195 show_autosuspend, set_autosuspend);
196
197static char power_group[] = "power";
198

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