* [PATCH] Use RX_BUF_SIZE to set size of RX buffer
@ 2017-09-28 9:52 Martyn Welch
2017-09-28 10:00 ` Uwe Kleine-König
0 siblings, 1 reply; 3+ messages in thread
From: Martyn Welch @ 2017-09-28 9:52 UTC (permalink / raw)
To: Greg Kroah-Hartman; +Cc: Jiri Slaby, linux-serial, linux-kernel, Martyn Welch
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.
---
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 fe368a4..bc2f2a2f 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -1165,7 +1165,7 @@ 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;
--
1.8.3.1
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] Use RX_BUF_SIZE to set size of RX buffer
2017-09-28 9:52 [PATCH] Use RX_BUF_SIZE to set size of RX buffer Martyn Welch
@ 2017-09-28 10:00 ` Uwe Kleine-König
2017-09-28 10:04 ` Martyn Welch
0 siblings, 1 reply; 3+ messages in thread
From: Uwe Kleine-König @ 2017-09-28 10:00 UTC (permalink / raw)
To: Martyn Welch; +Cc: Greg Kroah-Hartman, Jiri Slaby, linux-serial, linux-kernel
On Thu, Sep 28, 2017 at 10:52:15AM +0100, Martyn Welch wrote:
> 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.
Missing SoB Line
> ---
> 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 fe368a4..bc2f2a2f 100644
> --- a/drivers/tty/serial/imx.c
> +++ b/drivers/tty/serial/imx.c
> @@ -1165,7 +1165,7 @@ 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;
Acked-by: Uwe Kleine-König <u.kleine-könig@pengtronix.de>
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] Use RX_BUF_SIZE to set size of RX buffer
2017-09-28 10:00 ` Uwe Kleine-König
@ 2017-09-28 10:04 ` Martyn Welch
0 siblings, 0 replies; 3+ messages in thread
From: Martyn Welch @ 2017-09-28 10:04 UTC (permalink / raw)
To: Uwe Kleine-König
Cc: Greg Kroah-Hartman, Jiri Slaby, linux-serial, linux-kernel
On Thu, Sep 28, 2017 at 12:00:19PM +0200, Uwe Kleine-König wrote:
> On Thu, Sep 28, 2017 at 10:52:15AM +0100, Martyn Welch wrote:
> > 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.
>
> Missing SoB Line
Doh! v2 on way...
>
> > ---
> > 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 fe368a4..bc2f2a2f 100644
> > --- a/drivers/tty/serial/imx.c
> > +++ b/drivers/tty/serial/imx.c
> > @@ -1165,7 +1165,7 @@ 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;
> Acked-by: Uwe Kleine-König <u.kleine-könig@pengtronix.de>
>
>
> --
> Pengutronix e.K. | Uwe Kleine-König |
> Industrial Linux Solutions | http://www.pengutronix.de/ |
^ permalink raw reply [flat|nested] 3+ messages in thread
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2017-09-28 9:52 [PATCH] Use RX_BUF_SIZE to set size of RX buffer Martyn Welch
2017-09-28 10:00 ` Uwe Kleine-König
2017-09-28 10:04 ` Martyn Welch
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