linux-kernel - [PATCH 7/8] Input: st1232 - note that the receive buffer is DMA-safe

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Message-Id: <20191022195622.66976-8-dmitry.torokhov@gmail.com>
Date:   Tue, 22 Oct 2019 12:56:21 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Martin Kepplinger <martink@...teo.de>
Cc:     Dixit Parmar <dixitparmar19@...il.com>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        Matthias Fend <matthias.fend@...fvision.net>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 7/8] 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.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.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