Patch "usb/gadget: Fix "high bandwidth" check in usb_gadget_ep_match_desc()" has been added to the 4.9-stable tree
Subsystems (2)
This is a note to let you know that I've just added the patch titled
usb/gadget: Fix "high bandwidth" check in usb_gadget_ep_match_desc()
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-gadget-fix-high-bandwidth-check-in-usb_gadget_ep_match_desc.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
11fb37998759c48e4e4c200c974593cbeab25d3eMon Sep 17 00:00:00 2001
From: Benjamin Herrenschmidt <[email protected]>
Date: Fri, 12 Jan 2018 17:50:02 +1100
Subject: usb/gadget: Fix "high bandwidth" check in usb_gadget_ep_match_desc()
From: Benjamin Herrenschmidt <[email protected]>
commit 11fb37998759c48e4e4c200c974593cbeab25d3e upstream.
The current code tries to test for bits that are masked out by usb_endpoint_maxp(). Instead, use the proper accessor to access the new high bandwidth bits.
--- drivers/usb/gadget/udc/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/usb/gadget/udc/core.c +1 -1
@@ -913,7 +913,7 @@ int usb_gadget_ep_match_desc(struct usb_return 0 ;/* "high bandwidth" works only at high speed */ -if (!gadget_is_dualspeed (gadget) &&usb_endpoint_maxp (desc) & (3 <<11 )) +if (!gadget_is_dualspeed (gadget) &&usb_endpoint_maxp_mult (desc) >1 )return 0 ;switch (type) {
Patches currently in stable-queue which might be from [email protected] are
queue-4.9/usb-gadget-fix-high-bandwidth-check-in-usb_gadget_ep_match_desc.patch