diff options
Diffstat (limited to 'drivers/usb/core/Kconfig')
| -rw-r--r-- | drivers/usb/core/Kconfig | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/usb/core/Kconfig b/drivers/usb/core/Kconfig index 5113ef4cb7f6..97b09f282705 100644 --- a/drivers/usb/core/Kconfig +++ b/drivers/usb/core/Kconfig @@ -91,12 +91,15 @@ config USB_PERSIST depends on USB && PM && EXPERIMENTAL default n help - If you say Y here, USB device data structures will remain + + If you say Y here and enable the "power/persist" attribute + for a USB device, the device's data structures will remain persistent across system suspend, even if the USB bus loses - power. (This includes software-suspend, also known as swsusp, - or suspend-to-disk.) The devices will reappear as if by magic - when the system wakes up, with no need to unmount USB filesystems, - rmmod host-controller drivers, or do anything else. + power. (This includes hibernation, also known as swsusp or + suspend-to-disk.) The devices will reappear as if by magic + when the system wakes up, with no need to unmount USB + filesystems, rmmod host-controller drivers, or do anything + else. WARNING: This option can be dangerous! |