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Commit 31d3c855 authored by Nadine Toledano's avatar Nadine Toledano
Browse files

msm: ipa: do not send zero length packet to IPA 



Fail the operation of ipa_tx_dp() in case skb size is zero.
This is done as IPA will not generate a status packet for zero
length packet and to avoid a possible memory leak.

Change-Id: I8abab2e32e5937a86802d2d5c73c4e7243775ea5
Acked-by: default avatarAdy Abraham <adya@qti.qualcomm.com>
Signed-off-by: default avatarNadine Toledano <nadinet@codeaurora.org>
parent dc75cd31

drivers/platform/msm/ipa/ipa_dp.c

+6 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.

/* Copyright (c) 2012-2015, 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
@@ -1269,6 +1269,11 @@ int ipa_tx_dp(enum ipa_client_type dst, struct sk_buff *skb, 


	memset(desc, 0, 2 * sizeof(struct ipa_desc));



	if (skb->len == 0) {

		IPAERR("packet size is 0\n");

		return -EINVAL;

	}



	/*

	 * USB_CONS: PKT_INIT ep_idx = dst pipe

	 * Q6_CONS: PKT_INIT ep_idx = sender pipe