From ca5737396927afd4d57b133fd2874bbcf3421cdb Mon Sep 17 00:00:00 2001
From: Pavel Hofman <pavel.hofman@ivitera.com>
Date: Fri, 10 Dec 2021 09:52:19 +0100
Subject: [PATCH] usb: core: config: using bit mask instead of individual bits
Git-commit: ca5737396927afd4d57b133fd2874bbcf3421cdb
Patch-mainline: v5.16-rc5
References: git-fixes
Using standard USB_EP_MAXP_MULT_MASK instead of individual bits for
extracting multiple-transactions bits from wMaxPacketSize value.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Pavel Hofman <pavel.hofman@ivitera.com>
Link: https://lore.kernel.org/r/20211210085219.16796-2-pavel.hofman@ivitera.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/usb/core/config.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index e3c3a73e1ed8..48bc8a4814ac 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -422,9 +422,9 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno,
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;
--
2.31.1