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path: root/target/linux/brcm2708/patches-3.10/0095-dwc_otg-Don-t-issue-traffic-to-LS-devices-in-FS-mode.patch
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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.patch39
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");