From 1c4d6cd4cb48ae5d097c610a5ca4bd15e9f41bfb Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 17 Jan 2022 23:26:28 -0800 Subject: [PATCH] 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 Tested-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/i2c-hid/i2c-hid-core.c | 5 +++-- 1 file 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 f312d2a..91b2fa0 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++; -- 2.7.4