This is a note to let you know that I've just added the patch titled usb: mtu3: fix the wrong HS mult value to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: usb-mtu3-fix-the-wrong-hs-mult-value.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 44e4439d8f9f8d0e9da767d1f31e7c211081feca Mon Sep 17 00:00:00 2001 From: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx> Date: Fri, 13 Aug 2021 14:30:49 +0800 Subject: usb: mtu3: fix the wrong HS mult value From: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx> commit 44e4439d8f9f8d0e9da767d1f31e7c211081feca upstream. 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> Link: https://lore.kernel.org/r/1628836253-7432-3-git-send-email-chunfeng.yun@xxxxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/usb/mtu3/mtu3_gadget.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) --- 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 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 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: Patches currently in stable-queue which might be from chunfeng.yun@xxxxxxxxxxxx are queue-5.10/usb-mtu3-fix-the-wrong-hs-mult-value.patch queue-5.10/usb-gadget-tegra-xudc-fix-the-wrong-mult-value-for-hs-isoc-or-intr.patch queue-5.10/usb-mtu3-use-mult-for-hs-isoc-or-intr.patch queue-5.10/usb-mtu3-restore-hs-function-when-set-ss-ssp.patch