The sequence to put port in test mode is not complete.
According EHCI specification all enabled ports must be
put in suspend.
Signed-off-by: Boris Todorov <boris.st.todorov@xxxxxxxxx>
---
drivers/usb/host/ehci-hub.c | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index ea6184b..4b513e4 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -52,6 +52,7 @@ static void ehci_handover_companion_ports(struct ehci_hcd *ehci)
int port;
__le32 buf;
struct usb_hcd *hcd = ehci_to_hcd(ehci);
+ u32 __iomem *port_sreg;
if (!ehci->owned_ports)
return;
@@ -1120,6 +1121,18 @@ static int ehci_hub_control (
if (!selector || selector > 5)
goto error;
ehci_quiesce(ehci);
+ /* put all enabled ports in suspend */
+ while(ports--) {
+ port_sreg = &ehci->regs->port_status[ports];
+
+ /* first check if port is enabled
+ * else results are undefined (according spec)
+ */
+ if(ehci_readl(ehci, port_sreg) & PORT_PE)
+ ehci_writel(ehci,
+ ehci_readl(ehci, port_sreg)|PORT_SUSPEND,
+ port_sreg);
+ }
ehci_halt(ehci);
temp |= selector << 16;
ehci_writel(ehci, temp, status_reg);
--
1.7.0.4
--
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