From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756043Ab1HEKIV (ORCPT ); Fri, 5 Aug 2011 06:08:21 -0400 Received: from eu1sys200aog106.obsmtp.com ([207.126.144.121]:37946 "EHLO eu1sys200aog106.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752609Ab1HEKDw (ORCPT ); Fri, 5 Aug 2011 06:03:52 -0400 From: Viresh Kumar To: , , Cc: , , , , , , , , , , , , , , Subject: [PATCH V3 04/20] dmaengine/amba-pl08x: pass (*ptr) to sizeof() instead of (struct xyz) Date: Fri, 5 Aug 2011 15:32:29 +0530 Message-ID: <064fabdf1ceca5437e6df8c94e3d4cd1538e7c41.1312538034.git.viresh.kumar@st.com> X-Mailer: git-send-email 1.7.2.2 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As mentioned in Documentation/CodingStyle, The preferred form for passing a size of a struct is the following: p = kmalloc(sizeof(*p), ...); The alternative form where struct name is spelled out hurts readability and introduces an opportunity for a bug when the pointer variable type is changed but the corresponding sizeof that is passed to a memory allocator is not. This patch replaces (struct xyz) with *ptr at several occurrences in driver. Signed-off-by: Viresh Kumar --- drivers/dma/amba-pl08x.c | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index 8e2056b..01c2f50 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -1293,7 +1293,7 @@ static int pl08x_prep_channel_resources(struct pl08x_dma_chan *plchan, static struct pl08x_txd *pl08x_get_txd(struct pl08x_dma_chan *plchan, unsigned long flags) { - struct pl08x_txd *txd = kzalloc(sizeof(struct pl08x_txd), GFP_NOWAIT); + struct pl08x_txd *txd = kzalloc(sizeof(*txd), GFP_NOWAIT); if (txd) { dma_async_tx_descriptor_init(&txd->tx, &plchan->chan); @@ -1690,7 +1690,7 @@ static int pl08x_dma_init_virtual_channels(struct pl08x_driver_data *pl08x, * to cope with that situation. */ for (i = 0; i < channels; i++) { - chan = kzalloc(sizeof(struct pl08x_dma_chan), GFP_KERNEL); + chan = kzalloc(sizeof(*chan), GFP_KERNEL); if (!chan) { dev_err(&pl08x->adev->dev, "%s no memory for channel\n", __func__); @@ -1850,7 +1850,7 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id) return ret; /* Create the driver state holder */ - pl08x = kzalloc(sizeof(struct pl08x_driver_data), GFP_KERNEL); + pl08x = kzalloc(sizeof(*pl08x), GFP_KERNEL); if (!pl08x) { ret = -ENOMEM; goto out_no_pl08x; @@ -1929,7 +1929,7 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id) } /* Initialize physical channels */ - pl08x->phy_chans = kmalloc((vd->channels * sizeof(struct pl08x_phy_chan)), + pl08x->phy_chans = kmalloc((vd->channels * sizeof(*pl08x->phy_chans)), GFP_KERNEL); if (!pl08x->phy_chans) { dev_err(&adev->dev, "%s failed to allocate " -- 1.7.2.2