linux-kernel - [PATCH v2 4/4] usb: mtu3: set interval of FS intr and isoc endpoint

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Date:   Sat, 18 Dec 2021 17:57:49 +0800
From:   Chunfeng Yun <chunfeng.yun@...iatek.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>,
        <linux-usb@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Eddie Hung <eddie.hung@...iatek.com>, <stable@...r.kernel.org>
Subject: [PATCH v2 4/4] usb: mtu3: set interval of FS intr and isoc endpoint

Add support to set interval also for FS intr and isoc endpoint.

Fixes: 4d79e042ed8b ("usb: mtu3: add support for usb3.1 IP")
Cc: stable@...r.kernel.org
Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
---
v2: new patch
---
 drivers/usb/mtu3/mtu3_gadget.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/usb/mtu3/mtu3_gadget.c b/drivers/usb/mtu3/mtu3_gadget.c
index b6c8a4a99c4d..9977600616d7 100644
--- a/drivers/usb/mtu3/mtu3_gadget.c
+++ b/drivers/usb/mtu3/mtu3_gadget.c
@@ -92,6 +92,13 @@ static int mtu3_ep_enable(struct mtu3_ep *mep)
 			interval = clamp_val(interval, 1, 16);
 			mult = usb_endpoint_maxp_mult(desc) - 1;
 		}
+		break;
+	case USB_SPEED_FULL:
+		if (usb_endpoint_xfer_isoc(desc))
+			interval = clamp_val(desc->bInterval, 1, 16);
+		else if (usb_endpoint_xfer_int(desc))
+			interval = clamp_val(desc->bInterval, 1, 255);
+
 		break;
 	default:
 		break; /*others are ignored */
-- 
2.18.0