| Message ID | 1369946086-11411-1-git-send-email-kamal@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/drivers/usb/host/uhci-hub.c b/drivers/usb/host/uhci-hub.c index 15d1322..eda1f2e 100644 --- a/drivers/usb/host/uhci-hub.c +++ b/drivers/usb/host/uhci-hub.c @@ -225,7 +225,8 @@ static int uhci_hub_status_data(struct usb_hcd *hcd, char *buf) /* auto-stop if nothing connected for 1 second */ if (any_ports_active(uhci)) uhci->rh_state = UHCI_RH_RUNNING; - else if (time_after_eq(jiffies, uhci->auto_stop_time)) + else if (time_after_eq(jiffies, uhci->auto_stop_time) && + !uhci->wait_for_hp) suspend_rh(uhci, UHCI_RH_AUTO_STOPPED); break;
This is a note to let you know that I have just added a patch titled USB: UHCI: fix for suspend of virtual HP controller to the linux-3.8.y-queue branch of the 3.8.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.8.y-queue This patch is scheduled to be released in version 3.8.13.2. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.8.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Kamal ------ From 4bcc16de7c21d1704258fc41aa83e1a261e22b52 Mon Sep 17 00:00:00 2001 From: Alan Stern <stern@rowland.harvard.edu> Date: Tue, 14 May 2013 13:55:29 -0400 Subject: USB: UHCI: fix for suspend of virtual HP controller commit 997ff893603c6455da4c5e26ba1d0f81adfecdfc upstream. HP's virtual UHCI host controller takes a long time to suspend (several hundred microseconds), even when no devices are attached. This provokes a warning message from uhci-hcd in the auto-stop case. To prevent this from happening, this patch adds a test to avoid performing an auto-stop when the wait_for_hp quirk flag is set. The controller will still suspend through the normal runtime PM mechanism. And since that pathway includes a 1-ms delay, the slowness of the virtual hardware won't matter. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Reported-and-tested-by: ZhenHua <zhen-hual@hp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- drivers/usb/host/uhci-hub.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) -- 1.8.1.2