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usb: dwc2: host: fix the data toggle error in full speed descriptor dma

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There will be data toggle error happen for full speed buld-out transfer.
The data toggle bit is saved in qh for non-control transfers, it is wrong
to  check the qtd for that case.

Also fix one static analysis tool issue after fix the data toggle error.

John Youn:
* Added WARN() to warn on improper usage of the
  dwc2_hcd_save_data_toggle() function.

Signed-off-by: Dyson Lee <dyson.lee@intel.com>
Signed-off-by: Tang, Jianqiang <jianqiang.tang@intel.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
This commit is contained in:
Tang, Jianqiang
2016-02-16 15:02:07 -08:00
committed by Felipe Balbi
parent 3142a16b98
commit 62943b7dfa
2 changed files with 9 additions and 1 deletions
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2
drivers/usb/dwc2/hcd_ddma.c
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@@ -1257,7 +1257,7 @@ stop_scan:
*/
if (halt_status == DWC2_HC_XFER_STALL)
qh->data_toggle = DWC2_HC_PID_DATA0;
else if (qtd)
else
dwc2_hcd_save_data_toggle(hsotg, chan, chnum, qtd);
}