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authorJan Beulich <JBeulich@suse.com>2012-09-18 12:23:02 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-09-18 17:20:48 +0100
commit9fa5780beea1274d498a224822397100022da7d4 (patch)
tree9dbc2d31f3af70502843bbebe8017828abd63136 /drivers/usb/host
parentee42f6c9fc62d1d4d45b0d75e5f947e6645d8c30 (diff)
downloadop-kernel-dev-9fa5780beea1274d498a224822397100022da7d4.zip
op-kernel-dev-9fa5780beea1274d498a224822397100022da7d4.tar.gz
USB EHCI/Xen: propagate controller reset information to hypervisor
Just like for the in-tree early console debug port driver, the hypervisor - when using a debug port based console - also needs to be told about controller resets, so it can suppress using and then re-initialize the debug port accordingly. Other than the in-tree driver, the hypervisor driver actually cares about doing this only for the device where the debug is port actually in use, i.e. it needs to be told the coordinates of the device being reset (quite obviously, leveraging the addition done for that would likely benefit the in-tree driver too). Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host')
-rw-r--r--drivers/usb/host/ehci-hcd.c4
-rw-r--r--drivers/usb/host/ehci-hub.c4
2 files changed, 4 insertions, 4 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index b05c686..6bf6c42 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -228,7 +228,7 @@ static int ehci_reset (struct ehci_hcd *ehci)
/* If the EHCI debug controller is active, special care must be
* taken before and after a host controller reset */
- if (ehci->debug && !dbgp_reset_prep())
+ if (ehci->debug && !dbgp_reset_prep(ehci_to_hcd(ehci)))
ehci->debug = NULL;
command |= CMD_RESET;
@@ -251,7 +251,7 @@ static int ehci_reset (struct ehci_hcd *ehci)
tdi_reset (ehci);
if (ehci->debug)
- dbgp_external_startup();
+ dbgp_external_startup(ehci_to_hcd(ehci));
ehci->port_c_suspend = ehci->suspended_ports =
ehci->resuming_ports = 0;
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index c788022..914ce93 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -353,10 +353,10 @@ static int ehci_bus_resume (struct usb_hcd *hcd)
goto shutdown;
if (unlikely(ehci->debug)) {
- if (!dbgp_reset_prep())
+ if (!dbgp_reset_prep(hcd))
ehci->debug = NULL;
else
- dbgp_external_startup();
+ dbgp_external_startup(hcd);
}
/* Ideally and we've got a real resume here, and no port's power
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