USB: Dump usb info during memory access violation
USB is accessing an invalid memory which results in EBI error.
To find the endpoint information and the address being accessed,
dump all the usb request info required for debugging memory access
violation issue from APP's proc using the trace framework.
CRs-Fixed: 430455
Change-Id: Ie99c31f43dfa9858a9ec2756903574888629e341
Signed-off-by: Chiranjeevi Velempati <cvelempa@codeaurora.org>
Signed-off-by: Rajkumar Raghupathy <raghup@codeaurora.org>
diff --git a/arch/arm/mach-msm/ebi_erp.c b/arch/arm/mach-msm/ebi_erp.c
index eb38101..6b300d8 100644
--- a/arch/arm/mach-msm/ebi_erp.c
+++ b/arch/arm/mach-msm/ebi_erp.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2012, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -18,6 +18,9 @@
#include <linux/errno.h>
#include <linux/proc_fs.h>
#include <linux/cpu.h>
+#include <mach/usb_trace.h>
+
+DEFINE_TRACE(usb_daytona_invalid_access);
#define MODULE_NAME "msm_ebi_erp"
@@ -113,6 +116,11 @@
err_cntl |= CNTL_CLEAR_ERR;
writel_relaxed(err_cntl, base + SLV_ERR_CNTL);
mb(); /* Ensure interrupt is cleared before returning */
+
+ if ((err_apacket0 & AMID_MASK) == 0x00000102)
+ trace_usb_daytona_invalid_access(err_addr, err_apacket0,
+ err_apacket1);
+
return IRQ_HANDLED;
}