1 files changed, 48 insertions, 0 deletions

diff --git a/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.17/0029-EHCI-fix-criterion-for-resuming-the-root-hub.patch b/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.17/0029-EHCI-fix-criterion-for-resuming-the-root-hub.patch
new file mode 100644
index 00000000..ca463cc4
--- /dev/null
+++ b/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.17/0029-EHCI-fix-criterion-for-resuming-the-root-hub.patch
@@ -0,0 +1,48 @@
+From 611589daeef0bd0f6b36f1fbb17f34b6abf05568 Mon Sep 17 00:00:00 2001
+From: Alan Stern <stern@rowland.harvard.edu>
+Date: Tue, 17 Apr 2012 15:24:15 -0400
+Subject: [PATCH 029/165] EHCI: fix criterion for resuming the root hub
+
+commit dc75ce9d929aabeb0843a6b1a4ab320e58ba1597 upstream.
+
+This patch (as1542) changes the criterion ehci-hcd uses to tell when
+it needs to resume the controller's root hub.  A resume is needed when
+a port status change is detected, obviously, but only if the root hub
+is currently suspended.
+
+Right now the driver tests whether the root hub is running, and that
+is not the correct test.  In particular, if the controller has died
+then the root hub should not be restarted.  In addition, some buggy
+hardware occasionally requires the root hub to be running and
+sending out SOF packets even while it is nominally supposed to be
+suspended.
+
+In the end, the test needs to be changed.  Rather than checking whether
+the root hub is currently running, the driver will now check whether
+the root hub is currently suspended.  This will yield the correct
+behavior in all cases.
+
+Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
+CC: Peter Chen <B29397@freescale.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
+---
+ drivers/usb/host/ehci-hcd.c |    2 +-
+ 1 files changed, 1 insertions(+), 1 deletions(-)
+
+diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
+index 3ff9f82..ffbbf54 100644
+--- a/drivers/usb/host/ehci-hcd.c
++++ b/drivers/usb/host/ehci-hcd.c
+@@ -867,7 +867,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
+                pcd_status = status;
+ 
+                /* resume root hub? */
+-               if (!(cmd & CMD_RUN))
++               if (ehci->rh_state == EHCI_RH_SUSPENDED)
+                        usb_hcd_resume_root_hub(hcd);
+ 
+                /* get per-port change detect bits */
+-- 
+1.7.7.6
+