From: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
To: Felipe Balbi <balbi@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Thinh Nguyen <Thinh.Nguyen@synopsys.com>,
linux-usb@vger.kernel.org
Cc: John Youn <John.Youn@synopsys.com>
Subject: [PATCH v2 2/4] usb: dwc3: gadget: Store resource index of start cmd
Date: Sun, 29 Mar 2020 16:13:04 -0700 [thread overview]
Message-ID: <7a132f0067d0969be47a082eecadf268b28f86cf.1585523081.git.thinhn@synopsys.com> (raw)
In-Reply-To: <cover.1585523081.git.thinhn@synopsys.com>
As long as the START_TRANSFER command completes, it provides the
resource index of the endpoint. Use this when we need to issue
END_TRANSFER command to an isoc endpoint to retry with a new
XferNotReady event.
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
---
drivers/usb/dwc3/gadget.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index b02832ad9e72..7989fe663300 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -387,9 +387,12 @@ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned cmd,
trace_dwc3_gadget_ep_cmd(dep, cmd, params, cmd_status);
- if (ret == 0 && DWC3_DEPCMD_CMD(cmd) == DWC3_DEPCMD_STARTTRANSFER) {
- dep->flags |= DWC3_EP_TRANSFER_STARTED;
- dwc3_gadget_ep_get_transfer_index(dep);
+ if (DWC3_DEPCMD_CMD(cmd) == DWC3_DEPCMD_STARTTRANSFER) {
+ if (ret == 0)
+ dep->flags |= DWC3_EP_TRANSFER_STARTED;
+
+ if (ret != -ETIMEDOUT)
+ dwc3_gadget_ep_get_transfer_index(dep);
}
if (saved_config) {
--
2.11.0
next prev parent reply other threads:[~2020-03-29 23:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-29 23:12 [PATCH v2 0/4] usb: dwc3: gadget: Improve isoc starting mechanism Thinh Nguyen
2020-03-29 23:12 ` [PATCH v2 1/4] usb: dwc3: gadget: Properly handle failed kick_transfer Thinh Nguyen
2020-03-29 23:13 ` Thinh Nguyen [this message]
2020-03-29 23:13 ` [PATCH v2 3/4] usb: dwc3: gadget: Issue END_TRANSFER to retry isoc transfer Thinh Nguyen
2020-03-29 23:13 ` [PATCH v2 4/4] usb: dwc3: gadget: WARN on no-resource status Thinh Nguyen
2020-03-30 8:15 ` [PATCH v2 0/4] usb: dwc3: gadget: Improve isoc starting mechanism Felipe Balbi
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