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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2022-01-18 10:26:28 +0300 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2022-02-14 12:52:29 +0300 |
| commit | 1c4d6cd4cb48ae5d097c610a5ca4bd15e9f41bfb (patch) | |
| tree | bf04bfa11bc999a98c7bdbd2c909229697f1f824 /drivers/hid | |
| parent | 551117c52237e7d92bc050df961b6a63e86c5bcd (diff) | |
| download | linux-1c4d6cd4cb48ae5d097c610a5ca4bd15e9f41bfb.tar.xz | |
HID: i2c-hid: note that I2C xfer buffers are DMA-safe
All I2C communications in the driver use driver-private buffers that are
DMA-safe, so mark them as such.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/i2c-hid/i2c-hid-core.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c index f312d2afd319..91b2fa0d33c7 100644 --- a/drivers/hid/i2c-hid/i2c-hid-core.c +++ b/drivers/hid/i2c-hid/i2c-hid-core.c @@ -180,7 +180,7 @@ static int i2c_hid_xfer(struct i2c_hid *ihid, __func__, send_len, send_buf); msgs[n].addr = client->addr; - msgs[n].flags = client->flags & I2C_M_TEN; + msgs[n].flags = (client->flags & I2C_M_TEN) | I2C_M_DMA_SAFE; msgs[n].len = send_len; msgs[n].buf = send_buf; n++; @@ -188,7 +188,8 @@ static int i2c_hid_xfer(struct i2c_hid *ihid, if (recv_len) { msgs[n].addr = client->addr; - msgs[n].flags = (client->flags & I2C_M_TEN) | I2C_M_RD; + msgs[n].flags = (client->flags & I2C_M_TEN) | + I2C_M_RD | I2C_M_DMA_SAFE; msgs[n].len = recv_len; msgs[n].buf = recv_buf; n++; |