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| author | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2017-11-04 21:20:03 +0100 |
|---|---|---|
| committer | Ryo Kataoka <ryo.kataoka.wt@renesas.com> | 2019-03-22 20:50:23 +0900 |
| commit | 0bd03a21d13866cc348c096e5495642ed32b86c3 (patch) | |
| tree | 195fa48478f2590eb42eb5fe2475399218cc83ed | |
| parent | 0e2bb2442140e9638d2062dd46c57a9fbc63357b (diff) | |
| download | renesas-bsp-0bd03a21d13866cc348c096e5495642ed32b86c3.tar.gz | |
i2c: dev: mark RDWR buffers as DMA_SAFE
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
(cherry picked from commit 978336d48d887d6deb7793e0d20a4673f357fb8e)
Signed-off-by: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com>
| -rw-r--r-- | drivers/i2c/i2c-dev.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c index 2cab27a6847980..036a03f0d0a686 100644 --- a/drivers/i2c/i2c-dev.c +++ b/drivers/i2c/i2c-dev.c @@ -264,6 +264,8 @@ static noinline int i2cdev_ioctl_rdwr(struct i2c_client *client, res = PTR_ERR(msgs[i].buf); break; } + /* memdup_user allocates with GFP_KERNEL, so DMA is ok */ + msgs[i].flags |= I2C_M_DMA_SAFE; /* * If the message length is received from the slave (similar |