diff options
| author | Sanket Parmar <sparmar@cadence.com> | 2021-05-17 18:05:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-25 15:35:13 +0300 |
| commit | f53729b828db74e61e5df5b4874e319f875c5fa3 (patch) | |
| tree | 3b504189877797a545484b33af42a2c324f99520 | |
| parent | 52b01a808696836d5d3382cd4ec6816e65f2ecc5 (diff) | |
| download | linux-f53729b828db74e61e5df5b4874e319f875c5fa3.tar.xz | |
usb: cdns3: Enable TDL_CHK only for OUT ep
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.com
Signed-off-by: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/cdns3/gadget.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/usb/cdns3/gadget.c b/drivers/usb/cdns3/gadget.c index f32f00c49571..c3bf54cc530f 100644 --- a/drivers/usb/cdns3/gadget.c +++ b/drivers/usb/cdns3/gadget.c @@ -1531,7 +1531,7 @@ 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); @@ -1569,15 +1569,13 @@ void cdns3_ep_config(struct cdns3_endpoint *priv_ep) 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: |