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authorJan Beulich <JBeulich@suse.com>2012-09-18 13:23:02 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-09-18 18:20:48 +0200
commit9fa5780beea1274d498a224822397100022da7d4 (patch)
tree9dbc2d31f3af70502843bbebe8017828abd63136 /drivers/usb/host
parentUSB: serial: core: fix up printk() usage (diff)
downloadlinux-9fa5780beea1274d498a224822397100022da7d4.tar.xz
linux-9fa5780beea1274d498a224822397100022da7d4.zip
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 b05c6865b610..6bf6c42481e8 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 c7880223738a..914ce9370e70 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