mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-25 16:31:13 +00:00
bb39b8d99a
Update our copies of the brcm2708 patches to the latest rpi-3.10-y rebased against linux-3.10.y stable (3.10.32). This should hopefully make it easier for us in the future to leverage the raspberry/rpi-* branches. Signed-off-by: Florian Fainelli <florian@openwrt.org> SVN-Revision: 39770
84 lines
2.8 KiB
Diff
84 lines
2.8 KiB
Diff
From 3c3c5a15a17649092ecf4c128478b267676c3353 Mon Sep 17 00:00:00 2001
|
|
From: P33M <P33M@github.com>
|
|
Date: Mon, 22 Jul 2013 14:08:26 +0100
|
|
Subject: [PATCH 083/174] dwc_otg: prevent BUG() in TT allocation if hub
|
|
address is > 16
|
|
|
|
A fixed-size array is used to track TT allocation. This was
|
|
previously set to 16 which caused a crash because
|
|
dwc_otg_hcd_allocate_port would read past the end of the array.
|
|
|
|
This was hit if a hub was plugged in which enumerated as addr > 16,
|
|
due to previous device resets or unplugs.
|
|
|
|
Also add #ifdef FIQ_DEBUG around hcd->hub_port_alloc[], which grows
|
|
to a large size if 128 hub addresses are supported. This field is
|
|
for debug only for tracking which frame an allocate happened in.
|
|
---
|
|
drivers/usb/host/dwc_otg/dwc_otg_hcd.c | 7 ++++++-
|
|
drivers/usb/host/dwc_otg/dwc_otg_hcd.h | 6 ++++--
|
|
drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c | 3 ++-
|
|
3 files changed, 12 insertions(+), 4 deletions(-)
|
|
|
|
--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
|
|
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
|
|
@@ -983,7 +983,9 @@ int dwc_otg_hcd_init(dwc_otg_hcd_t * hcd
|
|
hcd->periodic_qh_count = 0;
|
|
|
|
DWC_MEMSET(hcd->hub_port, 0, sizeof(hcd->hub_port));
|
|
+#ifdef FIQ_DEBUG
|
|
DWC_MEMSET(hcd->hub_port_alloc, -1, sizeof(hcd->hub_port_alloc));
|
|
+#endif
|
|
|
|
out:
|
|
return retval;
|
|
@@ -1317,7 +1319,9 @@ int dwc_otg_hcd_allocate_port(dwc_otg_hc
|
|
qh->skip_count = 0;
|
|
hcd->hub_port[hub_addr] |= 1 << port_addr;
|
|
fiq_print(FIQDBG_PORTHUB, "H%dP%d:A %d", hub_addr, port_addr, DWC_CIRCLEQ_FIRST(&qh->qtd_list)->urb->pipe_info.ep_num);
|
|
+#ifdef FIQ_DEBUG
|
|
hcd->hub_port_alloc[hub_addr * 16 + port_addr] = dwc_otg_hcd_get_frame_number(hcd);
|
|
+#endif
|
|
return 0;
|
|
}
|
|
}
|
|
@@ -1331,8 +1335,9 @@ void dwc_otg_hcd_release_port(dwc_otg_hc
|
|
hcd->fops->hub_info(hcd, DWC_CIRCLEQ_FIRST(&qh->qtd_list)->urb->priv, &hub_addr, &port_addr);
|
|
|
|
hcd->hub_port[hub_addr] &= ~(1 << port_addr);
|
|
+#ifdef FIQ_DEBUG
|
|
hcd->hub_port_alloc[hub_addr * 16 + port_addr] = -1;
|
|
-
|
|
+#endif
|
|
fiq_print(FIQDBG_PORTHUB, "H%dP%d:RO%d", hub_addr, port_addr, DWC_CIRCLEQ_FIRST(&qh->qtd_list)->urb->pipe_info.ep_num);
|
|
|
|
}
|
|
--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.h
|
|
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.h
|
|
@@ -577,8 +577,10 @@ struct dwc_otg_hcd {
|
|
uint32_t *frame_list;
|
|
|
|
/** Hub - Port assignment */
|
|
- int hub_port[16];
|
|
- int hub_port_alloc[256];
|
|
+ int hub_port[128];
|
|
+#ifdef FIQ_DEBUG
|
|
+ int hub_port_alloc[2048];
|
|
+#endif
|
|
|
|
/** Frame List DMA address */
|
|
dma_addr_t frame_list_dma;
|
|
--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
|
|
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
|
|
@@ -1419,8 +1419,9 @@ cleanup:
|
|
}
|
|
|
|
hcd->hub_port[hc->hub_addr] &= ~(1 << hc->port_addr);
|
|
+#ifdef FIQ_DEBUG
|
|
hcd->hub_port_alloc[hc->hub_addr * 16 + hc->port_addr] = -1;
|
|
-
|
|
+#endif
|
|
fiq_print(FIQDBG_PORTHUB, "H%dP%d:RR%d", hc->hub_addr, hc->port_addr, endp);
|
|
}
|
|
|