From: Martyn Welch <martyn.welch@collabora.co.uk>
Date: Thu, 28 Sep 2017 10:07:40 +0000 (+0100)
Subject: serial: imx: Use RX_BUF_SIZE to set size of RX buffer
X-Git-Tag: v5.15~10045^2~95
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f654b23c173eb7081e1f5bd33710a53c11ea4b49;p=platform%2Fkernel%2Flinux-starfive.git

serial: imx: Use RX_BUF_SIZE to set size of RX buffer

The imx serial driver uses PAGE_SIZE when allocating rx_buf, but then
uses RX_BUF_SIZE (which is currently defined as PAGE_SIZE) to describe
the length of the buffer when initialising the scatter gather list.

In order to ensure that this stays consistent, use RX_BUF_SIZE in both
locations.

Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk>
Acked-by: Uwe Kleine-König <u.kleine-könig@pengtronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index a42f386..9800fda 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -1166,7 +1166,7 @@ static int imx_uart_dma_init(struct imx_port *sport)
 		goto err;
 	}
 
-	sport->rx_buf = kzalloc(PAGE_SIZE, GFP_KERNEL);
+	sport->rx_buf = kzalloc(RX_BUF_SIZE, GFP_KERNEL);
 	if (!sport->rx_buf) {
 		ret = -ENOMEM;
 		goto err;