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| author | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2017-11-04 21:20:03 +0100 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2017-12-03 21:19:32 +0100 |
| commit | 978336d48d887d6deb7793e0d20a4673f357fb8e (patch) | |
| tree | 21708922404ccee4c71642e78d0ed30d8060ebf3 /drivers/i2c/i2c-dev.c | |
| parent | i2c: add helpers to ease DMA handling (diff) | |
| download | linux-978336d48d887d6deb7793e0d20a4673f357fb8e.tar.xz linux-978336d48d887d6deb7793e0d20a4673f357fb8e.zip | |
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>
Diffstat (limited to 'drivers/i2c/i2c-dev.c')
| -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 2cab27a68479..036a03f0d0a6 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 |