Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S967910Ab3DRKNS (ORCPT ); Thu, 18 Apr 2013 06:13:18 -0400 Received: from mail-wi0-f169.google.com ([209.85.212.169]:42495 "EHLO mail-wi0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S967857Ab3DRKNJ (ORCPT ); Thu, 18 Apr 2013 06:13:09 -0400 From: Lee Jones To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: arnd@arndb.de, linus.walleij@stericsson.com, Lee Jones , Vinod Koul , Dan Williams , Per Forlin , Rabin Vincent Subject: [PATCH 20/32] dmaengine: ste_dma40: Move rev error-check up to revision acquisition Date: Thu, 18 Apr 2013 11:12:02 +0100 Message-Id: <1366279934-30761-21-git-send-email-lee.jones@linaro.org> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1366279934-30761-1-git-send-email-lee.jones@linaro.org> References: <1366279934-30761-1-git-send-email-lee.jones@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1820 Lines: 50 At the moment we fetch the hardware revision, then do some stuff, then check whether the revision is correct and return in error if it's not. Well we may as well check it as soon as we know what it is, so let's move the check right up underneath where we acquire the version. Cc: Vinod Koul Cc: Dan Williams Cc: Per Forlin Cc: Rabin Vincent Signed-off-by: Lee Jones --- drivers/dma/ste_dma40.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 28fe153..282dd59 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -3185,6 +3185,10 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev) * DB8540v1 has revision 4 */ rev = AMBA_REV_BITS(pid); + if (rev < 2) { + d40_err(&pdev->dev, "hardware revision: %d is not supported", rev); + goto failure; + } plat_data = pdev->dev.platform_data; @@ -3199,12 +3203,6 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev) dev_info(&pdev->dev, "hardware revision: %d @ 0x%x with %d physical channels\n", rev, res->start, num_phy_chans); - if (rev < 2) { - d40_err(&pdev->dev, "hardware revision: %d is not supported", - rev); - goto failure; - } - base = kzalloc(ALIGN(sizeof(struct d40_base), 4) + (num_phy_chans + num_log_chans + ARRAY_SIZE(dma40_memcpy_channels)) * sizeof(struct d40_chan), GFP_KERNEL); -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/