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| author | Alan Stern <stern@rowland.harvard.edu> | 2007-05-04 19:52:20 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-07-13 03:29:47 +0400 |
| commit | 0458d5b4c9cc4ca0f62625d0144ddc4b4bc97a3c (patch) | |
| tree | 8b1fcb4f063ef4aa6f2e3cd41a60d986a1e432d4 /drivers/usb/core/generic.c | |
| parent | ce7cd137fced114d49178b73d468b82096a107fb (diff) | |
| download | linux-0458d5b4c9cc4ca0f62625d0144ddc4b4bc97a3c.tar.xz | |
USB: add USB-Persist facility
This patch (as886) adds the controversial USB-persist facility,
allowing USB devices to persist across a power loss during system
suspend.
The facility is controlled by a new Kconfig option (with appropriate
warnings about the potential dangers); when the option is off the
behavior will remain the same as it is now. But when the option is
on, people will be able to use suspend-to-disk and keep their USB
filesystems intact -- something particularly valuable for small
machines where the root filesystem is on a USB device!
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/generic.c')
| -rw-r--r-- | drivers/usb/core/generic.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c index 7cbf992adccd..d363b0ea7345 100644 --- a/drivers/usb/core/generic.c +++ b/drivers/usb/core/generic.c @@ -217,7 +217,10 @@ static int generic_resume(struct usb_device *udev) { int rc; - rc = usb_port_resume(udev); + if (udev->reset_resume) + rc = usb_reset_suspended_device(udev); + else + rc = usb_port_resume(udev); /* Root hubs don't have upstream ports to resume or reset, * so the line above won't do much for them. We have to |