[PATCH 5.14 11/23] usb: gadget: tegra-xudc: fix the wrong mult value for HS isoc or intr

[Greg Kroah-Hartman]

From: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>

commit eeb0cfb6b2b6b731902e68af641e30bd31be3c7b upstream.

usb_endpoint_maxp() only returns the bit[10:0] of wMaxPacketSize
of endpoint descriptor, not includes bit[12:11] anymore, so use
usb_endpoint_maxp_mult() instead.
Meanwhile no need AND 0x7ff when get maxp, remove it.

Fixes: 49db427232fe ("usb: gadget: Add UDC driver for tegra XUSB device mode controller")
Cc: stable@xxxxxxxxxxxxxxx
Acked-by: Felipe Balbi <balbi@xxxxxxxxxx>
Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/1628836253-7432-5-git-send-email-chunfeng.yun@xxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/usb/gadget/udc/tegra-xudc.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/usb/gadget/udc/tegra-xudc.c
+++ b/drivers/usb/gadget/udc/tegra-xudc.c
@@ -1610,7 +1610,7 @@ static void tegra_xudc_ep_context_setup(
 	u16 maxpacket, maxburst = 0, esit = 0;
 	u32 val;
 
-	maxpacket = usb_endpoint_maxp(desc) & 0x7ff;
+	maxpacket = usb_endpoint_maxp(desc);
 	if (xudc->gadget.speed == USB_SPEED_SUPER) {
 		if (!usb_endpoint_xfer_control(desc))
 			maxburst = comp_desc->bMaxBurst;
@@ -1621,7 +1621,7 @@ static void tegra_xudc_ep_context_setup(
 		   (usb_endpoint_xfer_int(desc) ||
 		    usb_endpoint_xfer_isoc(desc))) {
 		if (xudc->gadget.speed == USB_SPEED_HIGH) {
-			maxburst = (usb_endpoint_maxp(desc) >> 11) & 0x3;
+			maxburst = usb_endpoint_maxp_mult(desc) - 1;
 			if (maxburst == 0x3) {
 				dev_warn(xudc->dev,
 					 "invalid endpoint maxburst\n");