lisa/android_kernel_xiaomi_sm8350
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

usb: core: config: using bit mask instead of individual bits

Browse Source 
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@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>
This commit is contained in:
Pavel Hofman 2021-12-10 09:52:19 +01:00 committed by Greg Kroah-Hartman
parent d1eee0a393
commit 8d45969ca3
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/usb/core/config.c
View File

@ -425,9 +425,9 @@ 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 */