From: <gregkh@linuxfoundation.org>
To: benh@kernel.crashing.org, gregkh@linuxfoundation.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "usb/gadget: Fix "high bandwidth" check in usb_gadget_ep_match_desc()" has been added to the 4.15-stable tree
Date: Fri, 02 Feb 2018 11:44:14 +0100 [thread overview]
Message-ID: <15175682544297@kroah.com> (raw)
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 4.15-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-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From 11fb37998759c48e4e4c200c974593cbeab25d3e Mon Sep 17 00:00:00 2001
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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 <benh@kernel.crashing.org>
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.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/udc/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/gadget/udc/core.c
+++ b/drivers/usb/gadget/udc/core.c
@@ -912,7 +912,7 @@ 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 benh@kernel.crashing.org are
queue-4.15/usb-gadget-fix-high-bandwidth-check-in-usb_gadget_ep_match_desc.patch
reply other threads:[~2018-02-02 10:44 UTC|newest]
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