diff options
| author | Sevak Arakelyan <sevaka@synopsys.com> | 2016-11-16 15:33:52 -0800 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2016-11-18 13:54:52 +0200 |
| commit | 9d8da85798cb45c803e449284c4564d572756428 (patch) | |
| tree | e9f1bcac147e0aa738d2db5c418881c95c7af17a /drivers/usb | |
| parent | 36daf3aa399c08e7cdf499f5562888325f19f92f (diff) | |
| download | linux-9d8da85798cb45c803e449284c4564d572756428.tar.bz2 | |
usb: dwc2: Stop Complete Splits after Data PID == 0
Stop sending complete split requests in case of ISOC IN split transfers
after getting data with PID0. Otherwise we will get a NYET for each
additional IN token.
Signed-off-by: Sevak Arakelyan <sevaka@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc2/hcd_intr.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c index 0f2633434b89..b8f4b6aaf1d0 100644 --- a/drivers/usb/dwc2/hcd_intr.c +++ b/drivers/usb/dwc2/hcd_intr.c @@ -915,6 +915,8 @@ static int dwc2_xfercomp_isoc_split_in(struct dwc2_hsotg *hsotg, { struct dwc2_hcd_iso_packet_desc *frame_desc; u32 len; + u32 hctsiz; + u32 pid; if (!qtd->urb) return 0; @@ -932,7 +934,10 @@ static int dwc2_xfercomp_isoc_split_in(struct dwc2_hsotg *hsotg, qtd->isoc_split_offset += len; - if (frame_desc->actual_length >= frame_desc->length) { + hctsiz = dwc2_readl(hsotg->regs + HCTSIZ(chnum)); + pid = (hctsiz & TSIZ_SC_MC_PID_MASK) >> TSIZ_SC_MC_PID_SHIFT; + + if (frame_desc->actual_length >= frame_desc->length || pid == 0) { frame_desc->status = 0; qtd->isoc_frame_index++; qtd->complete_split = 0; |