diff options
Diffstat (limited to 'target/linux/brcm2708/patches-3.10/0095-dwc_otg-Don-t-issue-traffic-to-LS-devices-in-FS-mode.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-3.10/0095-dwc_otg-Don-t-issue-traffic-to-LS-devices-in-FS-mode.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-3.10/0095-dwc_otg-Don-t-issue-traffic-to-LS-devices-in-FS-mode.patch b/target/linux/brcm2708/patches-3.10/0095-dwc_otg-Don-t-issue-traffic-to-LS-devices-in-FS-mode.patch new file mode 100644 index 0000000000..acfb6a1751 --- /dev/null +++ b/target/linux/brcm2708/patches-3.10/0095-dwc_otg-Don-t-issue-traffic-to-LS-devices-in-FS-mode.patch @@ -0,0 +1,39 @@ +From 0dd387f3d3d1184fe45b57afbe73796e2ebe8d39 Mon Sep 17 00:00:00 2001 +From: P33M <P33M@github.com> +Date: Fri, 27 Sep 2013 14:42:24 +0100 +Subject: [PATCH 095/174] dwc_otg: Don't issue traffic to LS devices in FS mode + +Issuing low-speed packets when the root port is in full-speed mode +causes the root port to stop responding. Explicitly fail when +enqueuing URBs to a LS endpoint on a FS bus. +--- + drivers/usb/host/dwc_otg/dwc_otg_hcd.c | 11 +++++++++++ + 1 file changed, 11 insertions(+) + +--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c ++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c +@@ -501,6 +501,7 @@ int dwc_otg_hcd_urb_enqueue(dwc_otg_hcd_ + dwc_otg_transaction_type_e tr_type; + dwc_otg_qtd_t *qtd; + gintmsk_data_t intr_mask = {.d32 = 0 }; ++ hprt0_data_t hprt0 = { .d32 = 0 }; + + #ifdef DEBUG /* integrity checks (Broadcom) */ + if (NULL == hcd->core_if) { +@@ -515,6 +516,16 @@ int dwc_otg_hcd_urb_enqueue(dwc_otg_hcd_ + return -DWC_E_NO_DEVICE; + } + ++ /* Some core configurations cannot support LS traffic on a FS root port */ ++ if ((hcd->fops->speed(hcd, dwc_otg_urb->priv) == USB_SPEED_LOW) && ++ (hcd->core_if->hwcfg2.b.fs_phy_type == 1) && ++ (hcd->core_if->hwcfg2.b.hs_phy_type == 1)) { ++ hprt0.d32 = DWC_READ_REG32(hcd->core_if->host_if->hprt0); ++ if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_FULL_SPEED) { ++ return -DWC_E_NO_DEVICE; ++ } ++ } ++ + qtd = dwc_otg_hcd_qtd_create(dwc_otg_urb, atomic_alloc); + if (qtd == NULL) { + DWC_ERROR("DWC OTG HCD URB Enqueue failed creating QTD\n"); |