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Subject[PATCH v2] 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

Signed-off-by: Martyn Welch <>
Acked-by: Uwe Kleine-König <u.kleine-kö>

v2: Add missing SoB and Uwe's Acked-by.

drivers/tty/serial/imx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 1691ed2..9da109a 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -1164,7 +1164,7 @@ 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;
 \ /
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