From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfram Sang Subject: [RFC PATCH v5 6/6] i2c: dev: mark RDWR buffers as DMA_SAFE Date: Wed, 20 Sep 2017 20:59:56 +0200 Message-ID: <20170920185956.13874-7-wsa+renesas@sang-engineering.com> References: <20170920185956.13874-1-wsa+renesas@sang-engineering.com> Return-path: In-Reply-To: <20170920185956.13874-1-wsa+renesas@sang-engineering.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-i2c@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-iio@vger.kernel.org, linux-input@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, Wolfram Sang List-Id: linux-i2c@vger.kernel.org Signed-off-by: Wolfram Sang --- drivers/i2c/i2c-dev.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c index 6f638bbc922db4..bbc7aadb4c899d 100644 --- a/drivers/i2c/i2c-dev.c +++ b/drivers/i2c/i2c-dev.c @@ -280,6 +280,8 @@ static noinline int i2cdev_ioctl_rdwr(struct i2c_client *client, res = PTR_ERR(rdwr_pa[i].buf); break; } + /* memdup_user allocates with GFP_KERNEL, so DMA is ok */ + rdwr_pa[i].flags |= I2C_M_DMA_SAFE; /* * If the message length is received from the slave (similar -- 2.11.0