Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757005Ab2BBUsv (ORCPT ); Thu, 2 Feb 2012 15:48:51 -0500 Received: from mail.tpi.com ([70.99.223.143]:3093 "EHLO mail.tpi.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756653Ab2BBUst (ORCPT ); Thu, 2 Feb 2012 15:48:49 -0500 From: Tim Gardner To: Larry.Finger@lwfinger.net Cc: Tim Gardner , Chaoming Li , "John W. Linville" , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] rtlwifi: Fix PCI probe error path orphaned memory Date: Thu, 2 Feb 2012 13:48:06 -0700 Message-Id: <1328215686-126550-1-git-send-email-tim.gardner@canonical.com> X-Mailer: git-send-email 1.7.8.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2982 Lines: 101 Memory allocated by ieee80211_alloc_hw() will get orphaned if any subsequent initializations fail. Also don't pci_set_drvdata(pdev, NULL) until just before disabling the PCI device. Functions called by rtl_deinit_core(hw) may eventually need the context (when its actually implemented). Cc: Larry Finger Cc: Chaoming Li Cc: John W. Linville Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Tim Gardner --- drivers/net/wireless/rtlwifi/pci.c | 19 ++++++++++++------- 1 files changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c index 5cb2199..6b18063 100644 --- a/drivers/net/wireless/rtlwifi/pci.c +++ b/drivers/net/wireless/rtlwifi/pci.c @@ -1760,8 +1760,8 @@ int __devinit rtl_pci_probe(struct pci_dev *pdev, if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) { RT_ASSERT(false, "Unable to obtain 32bit DMA for consistent allocations\n"); - pci_disable_device(pdev); - return -ENOMEM; + err = -ENOMEM; + goto fail1; } } @@ -1803,7 +1803,7 @@ int __devinit rtl_pci_probe(struct pci_dev *pdev, err = pci_request_regions(pdev, KBUILD_MODNAME); if (err) { RT_ASSERT(false, "Can't obtain PCI resources\n"); - goto fail2; + goto fail1; } pmem_start = pci_resource_start(pdev, rtlpriv->cfg->bar_id); @@ -1816,6 +1816,7 @@ int __devinit rtl_pci_probe(struct pci_dev *pdev, rtlpriv->cfg->bar_id, pmem_len); if (rtlpriv->io.pci_mem_start == 0) { RT_ASSERT(false, "Can't map PCI mem\n"); + err = -ENOMEM; goto fail2; } @@ -1832,8 +1833,10 @@ int __devinit rtl_pci_probe(struct pci_dev *pdev, pci_write_config_byte(pdev, 0x04, 0x07); /* find adapter */ - if (!_rtl_pci_find_adapter(pdev, hw)) + if (!_rtl_pci_find_adapter(pdev, hw)) { + err = -ENODEV; goto fail3; + } /* Init IO handler */ _rtl_pci_io_handler_init(&pdev->dev, hw); @@ -1843,6 +1846,7 @@ int __devinit rtl_pci_probe(struct pci_dev *pdev, if (rtlpriv->cfg->ops->init_sw_vars(hw)) { RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Can't init_sw_vars\n"); + err = -ENODEV; goto fail3; } @@ -1887,7 +1891,6 @@ int __devinit rtl_pci_probe(struct pci_dev *pdev, return 0; fail3: - pci_set_drvdata(pdev, NULL); rtl_deinit_core(hw); _rtl_pci_io_handler_release(hw); @@ -1899,10 +1902,12 @@ fail2: complete(&rtlpriv->firmware_loading_complete); fail1: - + if (hw) + ieee80211_free_hw(hw); + pci_set_drvdata(pdev, NULL); pci_disable_device(pdev); - return -ENODEV; + return err; } EXPORT_SYMBOL(rtl_pci_probe); -- 1.7.8.3 -- 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/