diff options
Diffstat (limited to 'drivers/usb/core/sysfs.c')
-rw-r--r-- | drivers/usb/core/sysfs.c | 25 |
1 files changed, 4 insertions, 21 deletions
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index ae76397..1547700 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -327,7 +327,6 @@ static DEVICE_ATTR(autosuspend, S_IRUGO | S_IWUSR, static const char on_string[] = "on"; static const char auto_string[] = "auto"; -static const char suspend_string[] = "suspend"; static ssize_t show_level(struct device *dev, struct device_attribute *attr, char *buf) @@ -335,13 +334,8 @@ show_level(struct device *dev, struct device_attribute *attr, char *buf) struct usb_device *udev = to_usb_device(dev); const char *p = auto_string; - if (udev->state == USB_STATE_SUSPENDED) { - if (udev->autoresume_disabled) - p = suspend_string; - } else { - if (udev->autosuspend_disabled) - p = on_string; - } + if (udev->state != USB_STATE_SUSPENDED && udev->autosuspend_disabled) + p = on_string; return sprintf(buf, "%s\n", p); } @@ -353,7 +347,7 @@ set_level(struct device *dev, struct device_attribute *attr, int len = count; char *cp; int rc = 0; - int old_autosuspend_disabled, old_autoresume_disabled; + int old_autosuspend_disabled; cp = memchr(buf, '\n', count); if (cp) @@ -361,7 +355,6 @@ set_level(struct device *dev, struct device_attribute *attr, usb_lock_device(udev); old_autosuspend_disabled = udev->autosuspend_disabled; - old_autoresume_disabled = udev->autoresume_disabled; /* Setting the flags without calling usb_pm_lock is a subject to * races, but who cares... @@ -369,28 +362,18 @@ set_level(struct device *dev, struct device_attribute *attr, if (len == sizeof on_string - 1 && strncmp(buf, on_string, len) == 0) { udev->autosuspend_disabled = 1; - udev->autoresume_disabled = 0; rc = usb_external_resume_device(udev, PMSG_USER_RESUME); } else if (len == sizeof auto_string - 1 && strncmp(buf, auto_string, len) == 0) { udev->autosuspend_disabled = 0; - udev->autoresume_disabled = 0; rc = usb_external_resume_device(udev, PMSG_USER_RESUME); - } else if (len == sizeof suspend_string - 1 && - strncmp(buf, suspend_string, len) == 0) { - udev->autosuspend_disabled = 0; - udev->autoresume_disabled = 1; - rc = usb_external_suspend_device(udev, PMSG_USER_SUSPEND); - } else rc = -EINVAL; - if (rc) { + if (rc) udev->autosuspend_disabled = old_autosuspend_disabled; - udev->autoresume_disabled = old_autoresume_disabled; - } usb_unlock_device(udev); return (rc < 0 ? rc : count); } |