From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Carpenter Subject: [patch -next] net: dwc-xlgmac: fix an error code in xlgmac_alloc_pages() Date: Tue, 21 Mar 2017 23:42:27 +0300 Message-ID: <20170321204227.GB22118@mwanda> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org, kernel-janitors@vger.kernel.org To: Jie Deng Return-path: Content-Disposition: inline Sender: kernel-janitors-owner@vger.kernel.org List-Id: netdev.vger.kernel.org The dma_mapping_error() returns true if there is an error but we want to return -ENOMEM and not 1. Fixes: 65e0ace2c5cd ("net: dwc-xlgmac: Initial driver for DesignWare Enterprise Ethernet") Signed-off-by: Dan Carpenter diff --git a/drivers/net/ethernet/synopsys/dwc-xlgmac-desc.c b/drivers/net/ethernet/synopsys/dwc-xlgmac-desc.c index 55c796ed7d26..39b5cb967bba 100644 --- a/drivers/net/ethernet/synopsys/dwc-xlgmac-desc.c +++ b/drivers/net/ethernet/synopsys/dwc-xlgmac-desc.c @@ -335,7 +335,6 @@ static int xlgmac_alloc_pages(struct xlgmac_pdata *pdata, { struct page *pages = NULL; dma_addr_t pages_dma; - int ret; /* Try to obtain pages, decreasing order if necessary */ gfp |= __GFP_COLD | __GFP_COMP | __GFP_NOWARN; @@ -352,10 +351,9 @@ static int xlgmac_alloc_pages(struct xlgmac_pdata *pdata, /* Map the pages */ pages_dma = dma_map_page(pdata->dev, pages, 0, PAGE_SIZE << order, DMA_FROM_DEVICE); - ret = dma_mapping_error(pdata->dev, pages_dma); - if (ret) { + if (dma_mapping_error(pdata->dev, pages_dma)) { put_page(pages); - return ret; + return -ENOMEM; } pa->pages = pages;