usb_endpoint_maxp() returns actual max packet size, @mult will
always be zero, fix it by using usb_endpoint_maxp_mult() instead
to get mult.
Fixes: 4d79e042ed8b ("usb: mtu3: add support for usb3.1 IP")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
---
v3: fix invalid email format for stable
v2: split two patch [v2 2/7],[v2 3/7] suggested by Felipe
---
drivers/usb/mtu3/mtu3_gadget.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/mtu3/mtu3_gadget.c b/drivers/usb/mtu3/mtu3_gadget.c
index 635ad277cb13..a399fd84c71f 100644
--- a/drivers/usb/mtu3/mtu3_gadget.c
+++ b/drivers/usb/mtu3/mtu3_gadget.c
@@ -64,14 +64,12 @@ static int mtu3_ep_enable(struct mtu3_ep *mep)
u32 interval = 0;
u32 mult = 0;
u32 burst = 0;
- int max_packet;
int ret;
desc = mep->desc;
comp_desc = mep->comp_desc;
mep->type = usb_endpoint_type(desc);
- max_packet = usb_endpoint_maxp(desc);
- mep->maxp = max_packet & GENMASK(10, 0);
+ mep->maxp = usb_endpoint_maxp(desc);
switch (mtu->g.speed) {
case USB_SPEED_SUPER:
@@ -92,7 +90,7 @@ static int mtu3_ep_enable(struct mtu3_ep *mep)
usb_endpoint_xfer_int(desc)) {
interval = desc->bInterval;
interval = clamp_val(interval, 1, 16) - 1;
- mult = (max_packet & GENMASK(12, 11)) >> 11;
+ mult = usb_endpoint_maxp_mult(desc) - 1;
}
break;
default:
--
2.18.0
