diff options
| author | Oliver Neukum <oliver@neukum.org> | 2009-10-19 13:19:41 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-11 11:55:17 -0800 |
| commit | 0c487206fe925ef370e1fc092003efb74ad57410 (patch) | |
| tree | d01c998a7f54fed5d3cfb8ab4cdb1e9284cd1583 /drivers/usb/core/hub.c | |
| parent | 54ab2b02ef6a454b4cca969f546d0dd43fec7308 (diff) | |
USB: improved error handling in usb_port_suspend()
usb: better error handling in usb_port_suspend
- disable remote wakeup only if it was enabled
- refuse to autosuspend if remote wakeup fails to be enabled
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/hub.c')
| -rw-r--r-- | drivers/usb/core/hub.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 0f857e64505..2ac11501522 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2123,9 +2123,13 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) USB_DEVICE_REMOTE_WAKEUP, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); - if (status) + if (status) { dev_dbg(&udev->dev, "won't remote wakeup, status %d\n", status); + /* bail if autosuspend is requested */ + if (msg.event & PM_EVENT_AUTO) + return status; + } } /* see 7.1.7.6 */ @@ -2134,7 +2138,8 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) dev_dbg(hub->intfdev, "can't suspend port %d, status %d\n", port1, status); /* paranoia: "should not happen" */ - (void) usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + if (udev->do_remote_wakeup) + (void) usb_control_msg(udev, usb_sndctrlpipe(udev, 0), USB_REQ_CLEAR_FEATURE, USB_RECIP_DEVICE, USB_DEVICE_REMOTE_WAKEUP, 0, NULL, 0, |