From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: Received: from mga11.intel.com ([192.55.52.93]:22916 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726563AbfF0FBx (ORCPT ); Thu, 27 Jun 2019 01:01:53 -0400 From: Wu Hao Subject: [PATCH v4 02/15] fpga: dfl: fme: remove copy_to_user() in ioctl for PR Date: Thu, 27 Jun 2019 12:44:42 +0800 Message-Id: <1561610695-5414-3-git-send-email-hao.wu@intel.com> In-Reply-To: <1561610695-5414-1-git-send-email-hao.wu@intel.com> References: <1561610695-5414-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org List-Id: linux-fpga@vger.kernel.org To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, yilun.xu@intel.com, hao.wu@intel.com, gregkh@linuxfoundation.org, atull@kernel.org This patch removes copy_to_user() code in partial reconfiguration ioctl, as it's useless as user never needs to read the data structure after ioctl. Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Moritz Fischer Acked-by: Alan Tull --- v2: clean up code split from patch 2 in v1 patchset. v3: no change. v4: no change. --- drivers/fpga/dfl-fme-pr.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/fpga/dfl-fme-pr.c b/drivers/fpga/dfl-fme-pr.c index d9ca955..6ec0f09 100644 --- a/drivers/fpga/dfl-fme-pr.c +++ b/drivers/fpga/dfl-fme-pr.c @@ -159,9 +159,6 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg) mutex_unlock(&pdata->lock); free_exit: vfree(buf); - if (copy_to_user((void __user *)arg, &port_pr, minsz)) - return -EFAULT; - return ret; } -- 1.8.3.1