usb: dwc3: gadget: Improve isoc starting mechanism
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- v2 Latest4 patches 1 replyIn review
- v13 patches 10 repliesSuperseded
Changes in v2 from the cover letter
- Include patch "usb: dwc3: gadget: WARN on no-resource status" to this series
Patches in v2 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/4 | usb: dwc3: gadget: Properly handle failed kick_transferdrivers/ | +16 | 0 replies | |
| 2/4 | usb: dwc3: gadget: Store resource index of start cmddrivers/ | +6 | 0 replies | |
| 3/4 | usb: dwc3: gadget: Issue END_TRANSFER to retry isoc transferdrivers/ | +35 | 0 replies | |
| 4/4 | usb: dwc3: gadget: WARN on no-resource statusdrivers/ | +2 | 0 replies |
Reviews trailers per patch
No Reviewed-by, Acked-by or Tested-by trailers for v2 yet.
Cover letter [PATCH v2 0/4] usb: dwc3: gadget: Improve isoc starting mechanism
Currently we use the "retry" method to issue START_TRANSFER command multiple times, each with a next interval. There's been report that 5 number of retries may not be enough. See https://lkml.org/lkml/2019/11/11/535
We could increase the number of retries. However, that also may not be enough depending on different system latency. It is not often that the latency is higher than 5 isoc intervals. If it goes beyond 5 intervals, let's restart the whole process again.
Changes in v2:
- Include patch "usb: dwc3: gadget: WARN on no-resource status" to this series
Thinh Nguyen (4):
usb: dwc3: gadget: Properly handle failed kick_transfer
usb: dwc3: gadget: Store resource index of start cmd
usb: dwc3: gadget: Issue END_TRANSFER to retry isoc transfer
usb: dwc3: gadget: WARN on no-resource status
drivers/usb/dwc3/gadget.c | 71 +++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 59 insertions(+), 12 deletions(-)
Signature · 1 line
2.11.0