From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: Tue, 22 Oct 2019 16:34:59 +0000 (-0700)
Subject: Input: st1232 - note that the receive buffer is DMA-safe
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=833c2c083856ef3077b51c908ec401fa0a130d57;p=linux.git

Input: st1232 - note that the receive buffer is DMA-safe

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.

Tested-by: Matthias Fend <Matthias.Fend@wolfvision.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---

diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c
index 0aee330731c91..a4a3b82ee69de 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,
 		}