diff options
Diffstat (limited to 'drivers/usb/core/usb.c')
| -rw-r--r-- | drivers/usb/core/usb.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 3db721cd557a..54b42ce311c1 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -22,6 +22,7 @@ */ #include <linux/module.h> +#include <linux/moduleparam.h> #include <linux/string.h> #include <linux/bitops.h> #include <linux/slab.h> @@ -50,6 +51,16 @@ static int nousb; /* Disable USB when built into kernel image */ struct workqueue_struct *ksuspend_usb_wq; /* For autosuspend */ +#ifdef CONFIG_USB_SUSPEND +static int usb_autosuspend_delay = 2; /* Default delay value, + * in seconds */ +module_param_named(autosuspend, usb_autosuspend_delay, uint, 0644); +MODULE_PARM_DESC(autosuspend, "default autosuspend delay"); + +#else +#define usb_autosuspend_delay 0 +#endif + /** * usb_ifnum_to_if - get the interface object with a given interface number @@ -306,6 +317,7 @@ usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus, unsigned port1) #ifdef CONFIG_PM mutex_init(&dev->pm_mutex); INIT_DELAYED_WORK(&dev->autosuspend, usb_autosuspend_work); + dev->autosuspend_delay = usb_autosuspend_delay * HZ; #endif return dev; } |