msm: ipa4: Disable prefetch for IPA 4.0
Disable smart prefetch for IPA 4.0 and beyond as
this is implemented in HW.
Change-Id: Id449d9088875027c6197046b6e1e1c3f76fc5de7
CRs-fixed: 2167320
Signed-off-by: Michael Adisumarta <madisuma@codeaurora.org>
diff --git a/drivers/platform/msm/ipa/ipa_clients/ipa_usb.c b/drivers/platform/msm/ipa/ipa_clients/ipa_usb.c
index d274490..612a439 100644
--- a/drivers/platform/msm/ipa/ipa_clients/ipa_usb.c
+++ b/drivers/platform/msm/ipa/ipa_clients/ipa_usb.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2015-2017 The Linux Foundation. All rights reserved.
+/* Copyright (c) 2015-2018 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
@@ -1332,6 +1332,10 @@
chan_params.chan_scratch.xdci.outstanding_threshold =
((params->teth_prot == IPA_USB_MBIM) ? 1 : 2) *
chan_params.chan_params.re_size;
+
+ if (ipa3_ctx->ipa_hw_type >= IPA_HW_v4_0)
+ chan_params.chan_scratch.xdci.outstanding_threshold = 0;
+
/* max_outstanding_tre is set in ipa3_request_gsi_channel() */
result = ipa3_request_gsi_channel(&chan_params, out_params);
if (result) {