[PATCH 7/8] Input: st1232 - note that the receive buffer is DMA-safe
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: 2019-10-22 19:56:41
Also in:
lkml
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Dmitry Torokhov, Linus Torvalds
The receiving buffer is allocated separately from the main driver data structure, and is naturally DMA-safe, so mark it as such when building I2C transfer message. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> --- drivers/input/touchscreen/st1232.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c
index 0aee330731c9..a4a3b82ee69d 100644
--- a/drivers/input/touchscreen/st1232.c
+++ b/drivers/input/touchscreen/st1232.c@@ -66,7 +66,7 @@ static int st1232_ts_read_data(struct st1232_ts_data *ts) }, { .addr = client->addr, - .flags = I2C_M_RD, + .flags = I2C_M_RD | I2C_M_DMA_SAFE, .len = ts->read_buf_len, .buf = ts->read_buf, }
--
2.23.0.866.gb869b98d4c-goog