diff options
Diffstat (limited to 'drivers/usb/core/sysfs.c')
| -rw-r--r-- | drivers/usb/core/sysfs.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index 5f3908f6e2d..b1725abf6c7 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -191,6 +191,36 @@ show_quirks(struct device *dev, struct device_attribute *attr, char *buf) static DEVICE_ATTR(quirks, S_IRUGO, show_quirks, NULL); static ssize_t +show_avoid_reset_quirk(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct usb_device *udev; + + udev = to_usb_device(dev); + return sprintf(buf, "%d\n", !!(udev->quirks & USB_QUIRK_RESET_MORPHS)); +} + +static ssize_t +set_avoid_reset_quirk(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct usb_device *udev = to_usb_device(dev); + int config; + + if (sscanf(buf, "%d", &config) != 1 || config < 0 || config > 1) + return -EINVAL; + usb_lock_device(udev); + if (config) + udev->quirks |= USB_QUIRK_RESET_MORPHS; + else + udev->quirks &= ~USB_QUIRK_RESET_MORPHS; + usb_unlock_device(udev); + return count; +} + +static DEVICE_ATTR(avoid_reset_quirk, S_IRUGO | S_IWUSR, + show_avoid_reset_quirk, set_avoid_reset_quirk); + +static ssize_t show_urbnum(struct device *dev, struct device_attribute *attr, char *buf) { struct usb_device *udev; @@ -558,6 +588,7 @@ static struct attribute *dev_attrs[] = { &dev_attr_version.attr, &dev_attr_maxchild.attr, &dev_attr_quirks.attr, + &dev_attr_avoid_reset_quirk.attr, &dev_attr_authorized.attr, &dev_attr_remove.attr, NULL, |