From patchwork Sun Sep 20 11:26:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julia Lawall X-Patchwork-Id: 11787615 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 00A746CA for ; Sun, 20 Sep 2020 12:16:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E701920EDD for ; Sun, 20 Sep 2020 12:16:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726376AbgITMQh (ORCPT ); Sun, 20 Sep 2020 08:16:37 -0400 Received: from mail2-relais-roc.national.inria.fr ([192.134.164.83]:34007 "EHLO mail2-relais-roc.national.inria.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726380AbgITMQg (ORCPT ); Sun, 20 Sep 2020 08:16:36 -0400 X-IronPort-AV: E=Sophos;i="5.77,282,1596492000"; d="scan'208";a="468612197" Received: from palace.lip6.fr ([132.227.105.202]) by mail2-relais-roc.national.inria.fr with ESMTP/TLS/AES256-SHA256; 20 Sep 2020 14:08:58 +0200 From: Julia Lawall To: Mark Brown Cc: kernel-janitors@vger.kernel.org, linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 11/14] spi/topcliff-pch: drop double zeroing Date: Sun, 20 Sep 2020 13:26:23 +0200 Message-Id: <1600601186-7420-12-git-send-email-Julia.Lawall@inria.fr> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1600601186-7420-1-git-send-email-Julia.Lawall@inria.fr> References: <1600601186-7420-1-git-send-email-Julia.Lawall@inria.fr> Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org sg_init_table zeroes its first argument, so the allocation of that argument doesn't have to. the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ expression x,n,flags; @@ x = - kcalloc + kmalloc_array (n,sizeof(*x),flags) ... sg_init_table(x,n) // Signed-off-by: Julia Lawall --- drivers/spi/spi-topcliff-pch.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff -u -p a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c --- a/drivers/spi/spi-topcliff-pch.c +++ b/drivers/spi/spi-topcliff-pch.c @@ -1002,7 +1002,7 @@ static void pch_spi_handle_dma(struct pc spin_unlock_irqrestore(&data->lock, flags); /* RX */ - dma->sg_rx_p = kcalloc(num, sizeof(*dma->sg_rx_p), GFP_ATOMIC); + dma->sg_rx_p = kmalloc_array(num, sizeof(*dma->sg_rx_p), GFP_ATOMIC); if (!dma->sg_rx_p) return; @@ -1065,7 +1065,7 @@ static void pch_spi_handle_dma(struct pc head = 0; } - dma->sg_tx_p = kcalloc(num, sizeof(*dma->sg_tx_p), GFP_ATOMIC); + dma->sg_tx_p = kmalloc_array(num, sizeof(*dma->sg_tx_p), GFP_ATOMIC); if (!dma->sg_tx_p) return;