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[PATCH] Input: elants_i2c - Use DMA safe i2c when possible




This irq handler is always reading bytes from the device into a
kmalloced buffer, so it's safe to mark this transaction as DMA safe.
This avoids bouncing the buffer when an i2c controller decides to use
DMA for a transaction.

Cc: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Signed-off-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
---
 drivers/input/touchscreen/elants_i2c.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c
index d21ca39b0fdb..be44abb8de33 100644
--- a/drivers/input/touchscreen/elants_i2c.c
+++ b/drivers/input/touchscreen/elants_i2c.c
@@ -863,7 +863,7 @@ static irqreturn_t elants_i2c_irq(int irq, void *_dev)
 	int i;
 	int len;
 
-	len = i2c_master_recv(client, ts->buf, sizeof(ts->buf));
+	len = i2c_master_recv_dmasafe(client, ts->buf, sizeof(ts->buf));
 	if (len < 0) {
 		dev_err(&client->dev, "%s: failed to read data: %d\n",
 			__func__, len);
-- 
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