[PATCH 3.13 059/103] usb: ehci: using wIndex + 1 for hub port

Kamal Mostafa kamal at canonical.com
Tue Sep 30 21:31:04 UTC 2014


3.13.11.8 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Peter Chen <peter.chen at freescale.com>

commit 5cbcc35e5bf0eae3c7494ce3efefffc9977827ae upstream.

The roothub's index per controller is from 0, but the hub port index per hub
is from 1, this patch fixes "can't find device at roohub" problem for connecting
test fixture at roohub when do USB-IF Embedded Host High-Speed Electrical Test.

This patch is for v3.12+.

Signed-off-by: Peter Chen <peter.chen at freescale.com>
Acked-by: Alan Stern <stern at rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/usb/host/ehci-hub.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 1bb85be..7ba8615 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -1241,7 +1241,7 @@ static int ehci_hub_control (
 			if (selector == EHSET_TEST_SINGLE_STEP_SET_FEATURE) {
 				spin_unlock_irqrestore(&ehci->lock, flags);
 				retval = ehset_single_step_set_feature(hcd,
-									wIndex);
+								wIndex + 1);
 				spin_lock_irqsave(&ehci->lock, flags);
 				break;
 			}
-- 
1.9.1





More information about the kernel-team mailing list