48 lines
1.6 KiB
Diff
48 lines
1.6 KiB
Diff
From 6ecef9d4e6add518889432cc642a50e47ee3536b Mon Sep 17 00:00:00 2001
|
|
From: P33M <P33M@github.com>
|
|
Date: Tue, 23 Jul 2013 14:15:32 +0100
|
|
Subject: [PATCH 084/196] dwc_otg: make channel halts with unknown state less
|
|
damaging
|
|
|
|
If the IRQ received a channel halt interrupt through the FIQ
|
|
with no other bits set, the IRQ would not release the host
|
|
channel and never complete the URB.
|
|
|
|
Add catchall handling to treat as a transaction error and retry.
|
|
---
|
|
drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c | 12 ++++++++++++
|
|
1 file changed, 12 insertions(+)
|
|
|
|
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
|
|
index dbff763..488defb 100644
|
|
--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
|
|
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
|
|
@@ -2578,12 +2578,24 @@ static void handle_hc_chhltd_intr_dma(dwc_otg_hcd_t * hcd,
|
|
DWC_READ_REG32(&hcd->
|
|
core_if->core_global_regs->
|
|
gintsts));
|
|
+ /* Failthrough: use 3-strikes rule */
|
|
+ qtd->error_count++;
|
|
+ dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
|
|
+ update_urb_state_xfer_intr(hc, hc_regs,
|
|
+ qtd->urb, qtd, DWC_OTG_HC_XFER_XACT_ERR);
|
|
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
|
|
}
|
|
|
|
}
|
|
} else {
|
|
DWC_PRINTF("NYET/NAK/ACK/other in non-error case, 0x%08x\n",
|
|
hcint.d32);
|
|
+ /* Failthrough: use 3-strikes rule */
|
|
+ qtd->error_count++;
|
|
+ dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
|
|
+ update_urb_state_xfer_intr(hc, hc_regs,
|
|
+ qtd->urb, qtd, DWC_OTG_HC_XFER_XACT_ERR);
|
|
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
|
|
}
|
|
}
|
|
|
|
--
|
|
1.9.1
|
|
|