This is a note to let you know that I've just added the patch titled
usb: core: config: using bit mask instead of individual bits
to the 5.15-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-core-config-using-bit-mask-instead-of-individual-bits.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ca5737396927afd4d57b133fd2874bbcf3421cdb Mon Sep 17 00:00:00 2001
From: Pavel Hofman <pavel.hofman@xxxxxxxxxxx>
Date: Fri, 10 Dec 2021 09:52:19 +0100
Subject: usb: core: config: using bit mask instead of individual bits
From: Pavel Hofman <pavel.hofman@xxxxxxxxxxx>
commit ca5737396927afd4d57b133fd2874bbcf3421cdb upstream.
Using standard USB_EP_MAXP_MULT_MASK instead of individual bits for
extracting multiple-transactions bits from wMaxPacketSize value.
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Pavel Hofman <pavel.hofman@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20211210085219.16796-2-pavel.hofman@xxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/core/config.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -422,9 +422,9 @@ static int usb_parse_endpoint(struct dev
maxpacket_maxes = full_speed_maxpacket_maxes;
break;
case USB_SPEED_HIGH:
- /* Bits 12..11 are allowed only for HS periodic endpoints */
+ /* Multiple-transactions bits are allowed only for HS periodic endpoints */
if (usb_endpoint_xfer_int(d) || usb_endpoint_xfer_isoc(d)) {
- i = maxp & (BIT(12) | BIT(11));
+ i = maxp & USB_EP_MAXP_MULT_MASK;
maxp &= ~i;
}
fallthrough;
Patches currently in stable-queue which might be from pavel.hofman@xxxxxxxxxxx are
queue-5.15/usb-core-config-fix-validation-of-wmaxpacketvalue-entries.patch
queue-5.15/usb-core-config-using-bit-mask-instead-of-individual-bits.patch
