From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752454AbbAROnM (ORCPT ); Sun, 18 Jan 2015 09:43:12 -0500 Received: from mout.web.de ([212.227.17.11]:60855 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750857AbbAROnJ (ORCPT ); Sun, 18 Jan 2015 09:43:09 -0500 Message-ID: <54BBC675.2030205@users.sourceforge.net> Date: Sun, 18 Jan 2015 15:43:01 +0100 From: SF Markus Elfring User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 MIME-Version: 1.0 To: Don Brace , iss_storagedev@hp.com, storagedev@pmcs.com, linux-scsi@vger.kernel.org CC: LKML , kernel-janitors@vger.kernel.org, Julia Lawall Subject: [PATCH 3/3] block: Deletion of checks before the function call "iounmap" References: <5307CAA2.8060406@users.sourceforge.net> <530A086E.8010901@users.sourceforge.net> <530A72AA.3000601@users.sourceforge.net> <530B5FB6.6010207@users.sourceforge.net> <530C5E18.1020800@users.sourceforge.net> <530CD2C4.4050903@users.sourceforge.net> <530CF8FF.8080600@users.sourceforge.net> <530DD06F.4090703@users.sourceforge.net> <5317A59D.4@users.sourceforge.net> <54BBC3AB.6040207@users.sourceforge.net> In-Reply-To: <54BBC3AB.6040207@users.sourceforge.net> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:8KREvnD40NXoMENkJe4jtKo1ZSTce781XH+mwP+X7AzIxkGs7bi AsJC8fnoJM7qDXKO6i+YGFraJCy3Nkz1J2YH8ELgxypKHJtmOaYXt1MhvyQBXGYHhH1ETQ5 Oz7eYaeHk5h+ZuupSYwiNIS7lWam1ZA2fie4JKvudb9iRyfCsRa/fH6YaoKvJb6HJ93wM4e nCryDEA7IMYK10aVkXS7Q== X-UI-Out-Filterresults: notjunk:1; Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Markus Elfring Date: Sun, 18 Jan 2015 13:33:25 +0100 The iounmap() function performs also input parameter validation. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring --- drivers/block/cciss.c | 18 ++++++------------ drivers/block/mg_disk.c | 3 +-- drivers/block/skd_main.c | 6 ++---- 3 files changed, 9 insertions(+), 18 deletions(-) diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index ff20f19..d13ef0f 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -4382,12 +4382,9 @@ err_out_free_res: * Deliberately omit pci_disable_device(): it does something nasty to * Smart Array controllers that pci_enable_device does not undo */ - if (h->transtable) - iounmap(h->transtable); - if (h->cfgtable) - iounmap(h->cfgtable); - if (h->vaddr) - iounmap(h->vaddr); + iounmap(h->transtable); + iounmap(h->cfgtable); + iounmap(h->vaddr); pci_release_regions(h->pdev); return err; } @@ -4939,12 +4936,9 @@ static void cciss_undo_allocations_after_kdump_soft_reset(ctlr_info_t *h) if (h->reply_pool) pci_free_consistent(h->pdev, h->max_commands * sizeof(__u64), h->reply_pool, h->reply_pool_dhandle); - if (h->transtable) - iounmap(h->transtable); - if (h->cfgtable) - iounmap(h->cfgtable); - if (h->vaddr) - iounmap(h->vaddr); + iounmap(h->transtable); + iounmap(h->cfgtable); + iounmap(h->vaddr); unregister_blkdev(h->major, h->devname); cciss_destroy_hba_sysfs_entry(h); pci_release_regions(h->pdev); diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c index 145ce2a..9f738ee 100644 --- a/drivers/block/mg_disk.c +++ b/drivers/block/mg_disk.c @@ -1068,8 +1068,7 @@ static int mg_remove(struct platform_device *plat_dev) gpio_free(host->rst); /* unmap io */ - if (host->dev_base) - iounmap(host->dev_base); + iounmap(host->dev_base); /* free mg_host */ kfree(host); diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c index 1e46eb2..d4c7c4b 100644 --- a/drivers/block/skd_main.c +++ b/drivers/block/skd_main.c @@ -4944,8 +4944,7 @@ err_out_timer: err_out_iounmap: for (i = 0; i < SKD_MAX_BARS; i++) - if (skdev->mem_map[i]) - iounmap(skdev->mem_map[i]); + iounmap(skdev->mem_map[i]); if (skdev->pcie_error_reporting_is_enabled) pci_disable_pcie_error_reporting(pdev); @@ -5108,8 +5107,7 @@ err_out_timer: err_out_iounmap: for (i = 0; i < SKD_MAX_BARS; i++) - if (skdev->mem_map[i]) - iounmap(skdev->mem_map[i]); + iounmap(skdev->mem_map[i]); if (skdev->pcie_error_reporting_is_enabled) pci_disable_pcie_error_reporting(pdev); -- 2.2.2