3.0-stable patches

added patches:
	usb-ehci-fix-bug-in-scheduling-periodic-split-transfers.patch

diff --git a/queue-3.0/series b/queue-3.0/series
index 330aa2843f2808296de1ebfb60f8f59fbf84e73e..a659cce20c4728b79a7148f9f181c054c52a74a2 100644 (file)
--- a/queue-3.0/series
+++ b/queue-3.0/series
@@ -9,3 +9,4 @@ usb-ftdi_sio-add-pid-vid-entries-for-elv-ws-300-pc-ii.patch
 usb-option-add-support-for-telit-le920.patch
 usb-option-add-changhong-ch690.patch
 usb-qcserial-add-telit-gobi-qdl-device.patch
+usb-ehci-fix-bug-in-scheduling-periodic-split-transfers.patch

diff --git a/queue-3.0/usb-ehci-fix-bug-in-scheduling-periodic-split-transfers.patch b/queue-3.0/usb-ehci-fix-bug-in-scheduling-periodic-split-transfers.patch
new file mode 100644 (file)
index 0000000..b749f48
--- /dev/null
+++ b/queue-3.0/usb-ehci-fix-bug-in-scheduling-periodic-split-transfers.patch
@@ -0,0 +1,38 @@
+From 3e619d04159be54b3daa0b7036b0ce9e067f4b5d Mon Sep 17 00:00:00 2001
+From: Alan Stern <stern@rowland.harvard.edu>
+Date: Wed, 30 Jan 2013 16:36:40 -0500
+Subject: USB: EHCI: fix bug in scheduling periodic split transfers
+
+From: Alan Stern <stern@rowland.harvard.edu>
+
+commit 3e619d04159be54b3daa0b7036b0ce9e067f4b5d upstream.
+
+This patch (as1654) fixes a very old bug in ehci-hcd, connected with
+scheduling of periodic split transfers.  The calculations for
+full/low-speed bus usage are all carried out after the correction for
+bit-stuffing has been applied, but the values in the max_tt_usecs
+array assume it hasn't been.  The array should allow for allocation of
+up to 90% of the bus capacity, which is 900 us, not 780 us.
+
+The symptom caused by this bug is that any isochronous transfer to a
+full-speed device with a maxpacket size larger than about 980 bytes is
+always rejected with a -ENOSPC error.
+
+Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/usb/host/ehci-sched.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/usb/host/ehci-sched.c
++++ b/drivers/usb/host/ehci-sched.c
+@@ -236,7 +236,7 @@ static inline unsigned char tt_start_ufr
+ }
+ 
+ static const unsigned char
+-max_tt_usecs[] = { 125, 125, 125, 125, 125, 125, 30, 0 };
++max_tt_usecs[] = { 125, 125, 125, 125, 125, 125, 125, 25 };
+ 
+ /* carryover low/fullspeed bandwidth that crosses uframe boundries */
+ static inline void carryover_tt_bandwidth(unsigned short tt_usecs[8])