From: Sanket Parmar sparmar@cadence.com
stable inclusion from stable-5.10.53 commit 4e275a4aca687794d61b4eb004d007163258ead3 bugzilla: 175574 https://gitee.com/openeuler/kernel/issues/I4DTUX
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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commit d6eef886903c4bb5af41b9a31d4ba11dc7a6f8e8 upstream.
ZLP gets stuck if TDL_CHK bit is set and TDL_FROM_TRB is used as TDL source for IN endpoints. To fix it, TDL_CHK is only enabled for OUT endpoints.
Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver") Reported-by: Aswath Govindraju a-govindraju@ti.com Signed-off-by: Sanket Parmar sparmar@cadence.com Link: https://lore.kernel.org/r/1621263912-13175-1-git-send-email-sparmar@cadence.... Signed-off-by: Peter Chen peter.chen@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/usb/cdns3/gadget.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/cdns3/gadget.c b/drivers/usb/cdns3/gadget.c index c24c0e3440e3..9d38f864cb68 100644 --- a/drivers/usb/cdns3/gadget.c +++ b/drivers/usb/cdns3/gadget.c @@ -2006,7 +2006,7 @@ static void cdns3_configure_dmult(struct cdns3_device *priv_dev, else mask = BIT(priv_ep->num);
- if (priv_ep->type != USB_ENDPOINT_XFER_ISOC) { + if (priv_ep->type != USB_ENDPOINT_XFER_ISOC && !priv_ep->dir) { cdns3_set_register_bit(®s->tdl_from_trb, mask); cdns3_set_register_bit(®s->tdl_beh, mask); cdns3_set_register_bit(®s->tdl_beh2, mask); @@ -2045,15 +2045,13 @@ int cdns3_ep_config(struct cdns3_endpoint *priv_ep, bool enable) case USB_ENDPOINT_XFER_INT: ep_cfg = EP_CFG_EPTYPE(USB_ENDPOINT_XFER_INT);
- if ((priv_dev->dev_ver == DEV_VER_V2 && !priv_ep->dir) || - priv_dev->dev_ver > DEV_VER_V2) + if (priv_dev->dev_ver >= DEV_VER_V2 && !priv_ep->dir) ep_cfg |= EP_CFG_TDL_CHK; break; case USB_ENDPOINT_XFER_BULK: ep_cfg = EP_CFG_EPTYPE(USB_ENDPOINT_XFER_BULK);
- if ((priv_dev->dev_ver == DEV_VER_V2 && !priv_ep->dir) || - priv_dev->dev_ver > DEV_VER_V2) + if (priv_dev->dev_ver >= DEV_VER_V2 && !priv_ep->dir) ep_cfg |= EP_CFG_TDL_CHK; break; default: