Commit b46a6b09 authored by Pawel Laszczak's avatar Pawel Laszczak Committed by Greg Kroah-Hartman

usb: cdns3: fix issue with rearming ISO OUT endpoint

ISO OUT endpoint is enabled during queuing first usb request
in transfer ring and disabled when TRBERR is reported by controller.
After TRBERR and before next transfer added to TR driver must again
reenable endpoint but does not.
To solve this issue during processing TRBERR event driver must
set the flag EP_UPDATE_EP_TRBADDR in priv_ep->flags field.

Fixes: 7733f6c3 ("usb: cdns3: Add Cadence USB3 DRD Driver")
cc: <stable@vger.kernel.org>
Acked-by: default avatarPeter Chen <peter.chen@kernel.org>
Signed-off-by: default avatarPawel Laszczak <pawell@cadence.com>
Link: https://lore.kernel.org/r/20220825062137.5766-1-pawell@cadence.comSigned-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d5dcc336
......@@ -1691,6 +1691,7 @@ static int cdns3_check_ep_interrupt_proceed(struct cdns3_endpoint *priv_ep)
ep_cfg &= ~EP_CFG_ENABLE;
writel(ep_cfg, &priv_dev->regs->ep_cfg);
priv_ep->flags &= ~EP_QUIRK_ISO_OUT_EN;
priv_ep->flags |= EP_UPDATE_EP_TRBADDR;
}
cdns3_transfer_completed(priv_dev, priv_ep);
} else if (!(priv_ep->flags & EP_STALLED) &&
......
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