diff options
| author | Ingo Molnar <mingo@kernel.org> | 2023-02-23 09:16:39 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-02-23 09:16:39 +0100 |
| commit | 585a78c1f77be305b1f6adad392f16047fb66ffd (patch) | |
| tree | 765143b487d582832c7695c9fbcae141c35baa4c /drivers/usb/cdns3/cdns3-gadget.c | |
| parent | 37064583f63eca93c98a9cdf2360485ea05f617a (diff) | |
| parent | 69308402ca6f5b80a5a090ade0b13bd146891420 (diff) | |
Merge branch 'linus' into objtool/core, to pick up Xen dependencies
Pick up dependencies - freshly merged upstream via xen-next - before applying
dependent objtool changes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/usb/cdns3/cdns3-gadget.c')
| -rw-r--r-- | drivers/usb/cdns3/cdns3-gadget.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/usb/cdns3/cdns3-gadget.c b/drivers/usb/cdns3/cdns3-gadget.c index 5adcb349718c..ccfaebca6faa 100644 --- a/drivers/usb/cdns3/cdns3-gadget.c +++ b/drivers/usb/cdns3/cdns3-gadget.c @@ -2614,6 +2614,7 @@ int cdns3_gadget_ep_dequeue(struct usb_ep *ep, u8 req_on_hw_ring = 0; unsigned long flags; int ret = 0; + int val; if (!ep || !request || !ep->desc) return -EINVAL; @@ -2649,6 +2650,13 @@ found: /* Update ring only if removed request is on pending_req_list list */ if (req_on_hw_ring && link_trb) { + /* Stop DMA */ + writel(EP_CMD_DFLUSH, &priv_dev->regs->ep_cmd); + + /* wait for DFLUSH cleared */ + readl_poll_timeout_atomic(&priv_dev->regs->ep_cmd, val, + !(val & EP_CMD_DFLUSH), 1, 1000); + link_trb->buffer = cpu_to_le32(TRB_BUFFER(priv_ep->trb_pool_dma + ((priv_req->end_trb + 1) * TRB_SIZE))); link_trb->control = cpu_to_le32((le32_to_cpu(link_trb->control) & TRB_CYCLE) | @@ -2660,6 +2668,10 @@ found: cdns3_gadget_giveback(priv_ep, priv_req, -ECONNRESET); + req = cdns3_next_request(&priv_ep->pending_req_list); + if (req) + cdns3_rearm_transfer(priv_ep, 1); + not_found: spin_unlock_irqrestore(&priv_dev->lock, flags); return ret; |