From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1032154AbdDTSH1 (ORCPT ); Thu, 20 Apr 2017 14:07:27 -0400 Received: from mga06.intel.com ([134.134.136.31]:53681 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S968162AbdDTSHW (ORCPT ); Thu, 20 Apr 2017 14:07:22 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.37,225,1488873600"; d="scan'208";a="90299358" Date: Fri, 21 Apr 2017 02:06:29 +0800 From: kbuild test robot To: Gilad Ben-Yossef Cc: kbuild-all@01.org, Herbert Xu , "David S. Miller" , Rob Herring , Mark Rutland , Greg Kroah-Hartman , devel@driverdev.osuosl.org, Binoy Jayan , devicetree@vger.kernel.org, gilad.benyossef@arm.com, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, Stuart Yoder , Ofir Drang Subject: [PATCH] staging: ccree: fix ifnullfree.cocci warnings Message-ID: <20170420180629.GA1954@lkp-ne04.lkp.intel.com> References: <201704210146.3krxPlST%fengguang.wu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1492693983-8175-3-git-send-email-gilad@benyossef.com> User-Agent: Mutt/1.5.23 (2014-03-12) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: fengguang.wu@intel.com X-SA-Exim-Scanned: No (on bee); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org drivers/staging/ccree/ssi_hash.c:317:2-7: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values. drivers/staging/ccree/ssi_hash.c:320:2-7: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values. drivers/staging/ccree/ssi_hash.c:323:2-7: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values. drivers/staging/ccree/ssi_hash.c:373:2-7: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values. drivers/staging/ccree/ssi_hash.c:375:2-7: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values. drivers/staging/ccree/ssi_hash.c:377:2-7: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values. drivers/staging/ccree/ssi_hash.c:379:3-8: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values. drivers/staging/ccree/ssi_hash.c:381:2-7: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values. drivers/staging/ccree/ssi_hash.c:383:2-7: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values. NULL check before some freeing functions is not needed. Based on checkpatch warning "kfree(NULL) is safe this check is probably not required" and kfreeaddr.cocci by Julia Lawall. Generated by: scripts/coccinelle/free/ifnullfree.cocci CC: Gilad Ben-Yossef Signed-off-by: Fengguang Wu --- ssi_hash.c | 27 +++++++++------------------ 1 file changed, 9 insertions(+), 18 deletions(-) --- a/drivers/staging/ccree/ssi_hash.c +++ b/drivers/staging/ccree/ssi_hash.c @@ -313,14 +313,11 @@ fail4: state->digest_buff_dma_addr = 0; } fail3: - if (state->opad_digest_buff != NULL) - kfree(state->opad_digest_buff); + kfree(state->opad_digest_buff); fail2: - if (state->digest_bytes_len != NULL) - kfree(state->digest_bytes_len); + kfree(state->digest_bytes_len); fail1: - if (state->digest_buff != NULL) - kfree(state->digest_buff); + kfree(state->digest_buff); fail_digest_result_buff: if (state->digest_result_buff != NULL) { kfree(state->digest_result_buff); @@ -369,18 +366,12 @@ static void ssi_hash_unmap_request(struc state->opad_digest_dma_addr = 0; } - if (state->opad_digest_buff != NULL) - kfree(state->opad_digest_buff); - if (state->digest_bytes_len != NULL) - kfree(state->digest_bytes_len); - if (state->digest_buff != NULL) - kfree(state->digest_buff); - if (state->digest_result_buff != NULL) - kfree(state->digest_result_buff); - if (state->buff1 != NULL) - kfree(state->buff1); - if (state->buff0 != NULL) - kfree(state->buff0); + kfree(state->opad_digest_buff); + kfree(state->digest_bytes_len); + kfree(state->digest_buff); + kfree(state->digest_result_buff); + kfree(state->buff1); + kfree(state->buff0); } static void ssi_hash_unmap_result(struct device *dev,