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authorJason Wessel <jason.wessel@windriver.com>2009-08-20 15:39:58 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2009-09-23 06:46:39 -0700
commitad45f1dc836cb175e9aeea927837dd48039d652c (patch)
tree99f026ad4d2c4faf540e2be2f5240249d3d972fb /drivers/usb
parent9780bc41dca728f9b082a42d9e1f1716d5057081 (diff)
downloadlinux-ad45f1dc836cb175e9aeea927837dd48039d652c.tar.bz2
USB: ehci-dbgp,ehci: Allow dbpg to work with suspend/resume
In order for the dbgp driver to survive suspend/resume, on every ehci resume operation the debug controller must get re-initialized. Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: dbrownell@users.sourceforge.net Cc: Ingo Molnar <mingo@elte.hu> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/host/ehci-hub.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 6b5e4d18d4bf..1b6f1c0e5cee 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -235,6 +235,13 @@ static int ehci_bus_resume (struct usb_hcd *hcd)
return -ESHUTDOWN;
}
+ if (unlikely(ehci->debug)) {
+ if (ehci->debug && !dbgp_reset_prep())
+ ehci->debug = NULL;
+ else
+ dbgp_external_startup();
+ }
+
/* Ideally and we've got a real resume here, and no port's power
* was lost. (For PCI, that means Vaux was maintained.) But we
* could instead be restoring a swsusp snapshot -- so that BIOS was