diff options
Diffstat (limited to 'target/linux/brcm2708/patches-3.10/0084-dwc_otg-make-channel-halts-with-unknown-state-less-d.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-3.10/0084-dwc_otg-make-channel-halts-with-unknown-state-less-d.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-3.10/0084-dwc_otg-make-channel-halts-with-unknown-state-less-d.patch b/target/linux/brcm2708/patches-3.10/0084-dwc_otg-make-channel-halts-with-unknown-state-less-d.patch new file mode 100644 index 0000000000..02efbe6f44 --- /dev/null +++ b/target/linux/brcm2708/patches-3.10/0084-dwc_otg-make-channel-halts-with-unknown-state-less-d.patch @@ -0,0 +1,42 @@ +From e2c9f557c5bff8c839704d0627d5dd108a0e14f2 Mon Sep 17 00:00:00 2001 +From: P33M <P33M@github.com> +Date: Tue, 23 Jul 2013 14:15:32 +0100 +Subject: [PATCH 084/174] 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(+) + +--- 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(dw + 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); + } + } + |