Return-path: Received: from mx0a-0016f401.pphosted.com ([67.231.148.174]:6733 "EHLO mx0a-0016f401.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751988AbbIRNdD (ORCPT ); Fri, 18 Sep 2015 09:33:03 -0400 Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.15.0.59/8.15.0.59) with SMTP id t8IDOR8b027007 for ; Fri, 18 Sep 2015 06:33:02 -0700 Received: from sc-exch03.marvell.com ([199.233.58.183]) by mx0a-0016f401.pphosted.com with ESMTP id 1wy3qpfe8a-1 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Fri, 18 Sep 2015 06:33:02 -0700 From: Amitkumar Karwar To: CC: Cathy Luo , Nishant Sarmukadam , Amitkumar Karwar Subject: [PATCH 08/16] mwifiex: avoid memsetting PCIe event buffer Date: Fri, 18 Sep 2015 06:32:10 -0700 Message-ID: <1442583138-2979-9-git-send-email-akarwar@marvell.com> (sfid-20150918_153308_984116_7A0543C3) In-Reply-To: <1442583138-2979-1-git-send-email-akarwar@marvell.com> References: <1442583138-2979-1-git-send-email-akarwar@marvell.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: Preallocated PCIe buffer is being reused for all PCIe interface events. Physical address of the buffer is shared with firmware so that it can perform DMA on it. As event length is specified in the header, there should not be a problem if the buffer gets overwritten. We will save some cycles by avoiding memset everytime while submitting the buffer to firmware. Fixes: 2728cecdc7d6bf3d21(mwifiex: corrections in PCIe event skb) Signed-off-by: Amitkumar Karwar --- drivers/net/wireless/mwifiex/pcie.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/net/wireless/mwifiex/pcie.c b/drivers/net/wireless/mwifiex/pcie.c index 408b684..21192b6 100644 --- a/drivers/net/wireless/mwifiex/pcie.c +++ b/drivers/net/wireless/mwifiex/pcie.c @@ -1815,7 +1815,6 @@ static int mwifiex_pcie_event_complete(struct mwifiex_adapter *adapter, if (!card->evt_buf_list[rdptr]) { skb_push(skb, INTF_HEADER_LEN); skb_put(skb, MAX_EVENT_SIZE - skb->len); - memset(skb->data, 0, MAX_EVENT_SIZE); if (mwifiex_map_pci_memory(adapter, skb, MAX_EVENT_SIZE, PCI_DMA_FROMDEVICE)) -- 1.8.1.4