From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wu Hao Subject: [PATCH v2 02/18] fpga: dfl: fme: remove copy_to_user() in ioctl for PR Date: Mon, 29 Apr 2019 16:55:35 +0800 Message-ID: <1556528151-17221-3-git-send-email-hao.wu@intel.com> References: <1556528151-17221-1-git-send-email-hao.wu@intel.com> Return-path: In-Reply-To: <1556528151-17221-1-git-send-email-hao.wu@intel.com> Sender: linux-kernel-owner@vger.kernel.org To: atull@kernel.org, mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, Wu Hao , Xu Yilun List-Id: linux-api@vger.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 --- v2: clean up code split from patch 2 in v1 patchset. --- 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