Commit a82c7abd authored by Minas Harutyunyan's avatar Minas Harutyunyan Committed by Felipe Balbi

usb: dwc2: hcd: Fix host channel halt flow

According databook in Buffer and External DMA mode
non-split periodic channels can't be halted.
Acked-by: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarMinas Harutyunyan <hminas@synopsys.com>
Signed-off-by: default avatarGrigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent 9d729a7a
...@@ -977,6 +977,24 @@ void dwc2_hc_halt(struct dwc2_hsotg *hsotg, struct dwc2_host_chan *chan, ...@@ -977,6 +977,24 @@ void dwc2_hc_halt(struct dwc2_hsotg *hsotg, struct dwc2_host_chan *chan,
if (dbg_hc(chan)) if (dbg_hc(chan))
dev_vdbg(hsotg->dev, "%s()\n", __func__); dev_vdbg(hsotg->dev, "%s()\n", __func__);
/*
* In buffer DMA or external DMA mode channel can't be halted
* for non-split periodic channels. At the end of the next
* uframe/frame (in the worst case), the core generates a channel
* halted and disables the channel automatically.
*/
if ((hsotg->params.g_dma && !hsotg->params.g_dma_desc) ||
hsotg->hw_params.arch == GHWCFG2_EXT_DMA_ARCH) {
if (!chan->do_split &&
(chan->ep_type == USB_ENDPOINT_XFER_ISOC ||
chan->ep_type == USB_ENDPOINT_XFER_INT)) {
dev_err(hsotg->dev, "%s() Channel can't be halted\n",
__func__);
return;
}
}
if (halt_status == DWC2_HC_XFER_NO_HALT_STATUS) if (halt_status == DWC2_HC_XFER_NO_HALT_STATUS)
dev_err(hsotg->dev, "!!! halt_status = %d !!!\n", halt_status); dev_err(hsotg->dev, "!!! halt_status = %d !!!\n", halt_status);
......
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