1 From 6ecef9d4e6add518889432cc642a50e47ee3536b Mon Sep 17 00:00:00 2001
2 From: P33M <P33M@github.com>
3 Date: Tue, 23 Jul 2013 14:15:32 +0100
4 Subject: [PATCH 084/196] dwc_otg: make channel halts with unknown state less
7 If the IRQ received a channel halt interrupt through the FIQ
8 with no other bits set, the IRQ would not release the host
9 channel and never complete the URB.
11 Add catchall handling to treat as a transaction error and retry.
13 drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c | 12 ++++++++++++
14 1 file changed, 12 insertions(+)
16 diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
17 index dbff763..488defb 100644
18 --- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
19 +++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
20 @@ -2578,12 +2578,24 @@ static void handle_hc_chhltd_intr_dma(dwc_otg_hcd_t * hcd,
22 core_if->core_global_regs->
24 + /* Failthrough: use 3-strikes rule */
26 + dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
27 + update_urb_state_xfer_intr(hc, hc_regs,
28 + qtd->urb, qtd, DWC_OTG_HC_XFER_XACT_ERR);
29 + halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
34 DWC_PRINTF("NYET/NAK/ACK/other in non-error case, 0x%08x\n",
36 + /* Failthrough: use 3-strikes rule */
38 + dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
39 + update_urb_state_xfer_intr(hc, hc_regs,
40 + qtd->urb, qtd, DWC_OTG_HC_XFER_XACT_ERR);
41 + halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);