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| Started by | Wolfram Sang <wsa+renesas@sang-engineering.com> |
|---|---|
| First post | 2017-08-17 16:20 +0200 |
| Last post | 2017-08-17 16:20 +0200 |
| Articles | 1 — 1 participant |
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[RFC PATCH v4 6/6] i2c: dev: mark RDWR buffers as DMA_SAFE Wolfram Sang <wsa+renesas@sang-engineering.com> - 2017-08-17 16:20 +0200
| From | Wolfram Sang <wsa+renesas@sang-engineering.com> |
|---|---|
| Date | 2017-08-17 16:20 +0200 |
| Subject | [RFC PATCH v4 6/6] i2c: dev: mark RDWR buffers as DMA_SAFE |
| Message-ID | <uftOq-5ZJ-27@gated-at.bofh.it> |
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> --- 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
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