mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 18:47:06 +00:00
40 lines
1.5 KiB
Diff
40 lines
1.5 KiB
Diff
|
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");
|