* [PATCH] drivers/media/dvb-frontends/rtl2830.c: correct double assignment
@ 2012-08-26 16:15 ` Julia Lawall
0 siblings, 0 replies; 4+ messages in thread
From: Julia Lawall @ 2012-08-26 16:15 UTC (permalink / raw)
To: Mauro Carvalho Chehab
Cc: kernel-janitors, linux-media, linux-kernel, crope, awalls
From: Julia Lawall <Julia.Lawall@lip6.fr>
The double assignment is meant to be a bit-or to combine two values.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression i;
@@
*i = ...;
i = ...;
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
---
drivers/media/dvb-frontends/rtl2830.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/dvb-frontends/rtl2830.c b/drivers/media/dvb-frontends/rtl2830.c
index 8fa8b08..b6ab858 100644
--- a/drivers/media/dvb-frontends/rtl2830.c
+++ b/drivers/media/dvb-frontends/rtl2830.c
@@ -254,7 +254,7 @@ static int rtl2830_init(struct dvb_frontend *fe)
goto err;
buf[0] = tmp << 6;
- buf[0] = (if_ctl >> 16) & 0x3f;
+ buf[0] |= (if_ctl >> 16) & 0x3f;
buf[1] = (if_ctl >> 8) & 0xff;
buf[2] = (if_ctl >> 0) & 0xff;
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH] drivers/media/dvb-frontends/rtl2830.c: correct double assignment
@ 2012-08-26 16:15 ` Julia Lawall
0 siblings, 0 replies; 4+ messages in thread
From: Julia Lawall @ 2012-08-26 16:15 UTC (permalink / raw)
To: Mauro Carvalho Chehab
Cc: kernel-janitors, linux-media, linux-kernel, crope, awalls
From: Julia Lawall <Julia.Lawall@lip6.fr>
The double assignment is meant to be a bit-or to combine two values.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression i;
@@
*i = ...;
i = ...;
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
---
drivers/media/dvb-frontends/rtl2830.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/dvb-frontends/rtl2830.c b/drivers/media/dvb-frontends/rtl2830.c
index 8fa8b08..b6ab858 100644
--- a/drivers/media/dvb-frontends/rtl2830.c
+++ b/drivers/media/dvb-frontends/rtl2830.c
@@ -254,7 +254,7 @@ static int rtl2830_init(struct dvb_frontend *fe)
goto err;
buf[0] = tmp << 6;
- buf[0] = (if_ctl >> 16) & 0x3f;
+ buf[0] |= (if_ctl >> 16) & 0x3f;
buf[1] = (if_ctl >> 8) & 0xff;
buf[2] = (if_ctl >> 0) & 0xff;
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] drivers/media/dvb-frontends/rtl2830.c: correct double assignment
2012-08-26 16:15 ` Julia Lawall
@ 2012-08-26 16:21 ` Antti Palosaari
-1 siblings, 0 replies; 4+ messages in thread
From: Antti Palosaari @ 2012-08-26 16:21 UTC (permalink / raw)
To: Julia Lawall
Cc: Mauro Carvalho Chehab, kernel-janitors, linux-media, linux-kernel,
awalls
On 08/26/2012 07:15 PM, Julia Lawall wrote:
> From: Julia Lawall <Julia.Lawall@lip6.fr>
>
> The double assignment is meant to be a bit-or to combine two values.
>
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
>
> // <smpl>
> @@
> expression i;
> @@
>
> *i = ...;
> i = ...;
> // </smpl>
>
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
>
> ---
> drivers/media/dvb-frontends/rtl2830.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/dvb-frontends/rtl2830.c b/drivers/media/dvb-frontends/rtl2830.c
> index 8fa8b08..b6ab858 100644
> --- a/drivers/media/dvb-frontends/rtl2830.c
> +++ b/drivers/media/dvb-frontends/rtl2830.c
> @@ -254,7 +254,7 @@ static int rtl2830_init(struct dvb_frontend *fe)
> goto err;
>
> buf[0] = tmp << 6;
> - buf[0] = (if_ctl >> 16) & 0x3f;
> + buf[0] |= (if_ctl >> 16) & 0x3f;
> buf[1] = (if_ctl >> 8) & 0xff;
> buf[2] = (if_ctl >> 0) & 0xff;
>
>
Thank you!
Acked-by: Antti Palosaari <crope@iki.fi>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Antti
--
http://palosaari.fi/
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] drivers/media/dvb-frontends/rtl2830.c: correct double assignment
@ 2012-08-26 16:21 ` Antti Palosaari
0 siblings, 0 replies; 4+ messages in thread
From: Antti Palosaari @ 2012-08-26 16:21 UTC (permalink / raw)
To: Julia Lawall
Cc: Mauro Carvalho Chehab, kernel-janitors, linux-media, linux-kernel,
awalls
On 08/26/2012 07:15 PM, Julia Lawall wrote:
> From: Julia Lawall <Julia.Lawall@lip6.fr>
>
> The double assignment is meant to be a bit-or to combine two values.
>
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
>
> // <smpl>
> @@
> expression i;
> @@
>
> *i = ...;
> i = ...;
> // </smpl>
>
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
>
> ---
> drivers/media/dvb-frontends/rtl2830.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/dvb-frontends/rtl2830.c b/drivers/media/dvb-frontends/rtl2830.c
> index 8fa8b08..b6ab858 100644
> --- a/drivers/media/dvb-frontends/rtl2830.c
> +++ b/drivers/media/dvb-frontends/rtl2830.c
> @@ -254,7 +254,7 @@ static int rtl2830_init(struct dvb_frontend *fe)
> goto err;
>
> buf[0] = tmp << 6;
> - buf[0] = (if_ctl >> 16) & 0x3f;
> + buf[0] |= (if_ctl >> 16) & 0x3f;
> buf[1] = (if_ctl >> 8) & 0xff;
> buf[2] = (if_ctl >> 0) & 0xff;
>
>
Thank you!
Acked-by: Antti Palosaari <crope@iki.fi>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Antti
--
http://palosaari.fi/
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2012-08-26 16:22 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-08-26 16:15 [PATCH] drivers/media/dvb-frontends/rtl2830.c: correct double assignment Julia Lawall
2012-08-26 16:15 ` Julia Lawall
2012-08-26 16:21 ` Antti Palosaari
2012-08-26 16:21 ` Antti Palosaari
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