From: Pawel Laszczak Date: Thu, 25 Aug 2022 06:21:37 +0000 (+0200) Subject: usb: cdns3: fix issue with rearming ISO OUT endpoint X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f1eb9e5d2f6e02f35cc98f2bcae5427d79db6aa1;p=linux.git usb: cdns3: fix issue with rearming ISO OUT endpoint commit b46a6b09fa056042a302b181a1941f0056944603 upstream. 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: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver") cc: Acked-by: Peter Chen Signed-off-by: Pawel Laszczak Link: https://lore.kernel.org/r/20220825062137.5766-1-pawell@cadence.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/cdns3/cdns3-gadget.c b/drivers/usb/cdns3/cdns3-gadget.c index 3f1ce89110776..621e6965d4ae6 100644 --- a/drivers/usb/cdns3/cdns3-gadget.c +++ b/drivers/usb/cdns3/cdns3-gadget.c @@ -1690,6 +1690,7 @@ 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) &&