[patch] [media] gspca: passing wrong length parameter to reg_w()

[patch] [media] gspca: passing wrong length parameter to reg_w()

[Dan Carpenter]

This looks like a cut an paste error.  This is a two byte array but we
use 8 as a length parameter.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
This is a static checker fix.  I don't own the hardware.

diff --git a/drivers/media/video/gspca/conex.c b/drivers/media/video/gspca/conex.c
index ea17b5d..f39fee0 100644
--- a/drivers/media/video/gspca/conex.c
+++ b/drivers/media/video/gspca/conex.c
@@ -306,7 +306,7 @@ static void cx_sensor(struct gspca_dev*gspca_dev)
 
 	reg_w(gspca_dev, 0x0020, reg20, 8);
 	reg_w(gspca_dev, 0x0028, reg28, 8);
-	reg_w(gspca_dev, 0x0010, reg10, 8);
+	reg_w(gspca_dev, 0x0010, reg10, 2);
 	reg_w_val(gspca_dev, 0x0092, 0x03);
 
 	switch (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
@@ -326,7 +326,7 @@ static void cx_sensor(struct gspca_dev*gspca_dev)
 	}
 	reg_w(gspca_dev, 0x007b, reg7b, 6);
 	reg_w_val(gspca_dev, 0x00f8, 0x00);
-	reg_w(gspca_dev, 0x0010, reg10, 8);
+	reg_w(gspca_dev, 0x0010, reg10, 2);
 	reg_w_val(gspca_dev, 0x0098, 0x41);
 	for (i = 0; i < 11; i++) {
 		if (i = 3 || i = 5 || i = 8)

Re: [patch] [media] gspca: passing wrong length parameter to reg_w()

[Jean-Francois Moine]

On Wed, 2 May 2012 09:15:25 +0300
Dan Carpenter <dan.carpenter@oracle.com> wrote:

> This looks like a cut an paste error.  This is a two byte array but we
> use 8 as a length parameter.
> 
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> ---
> This is a static checker fix.  I don't own the hardware.
> 
> diff --git a/drivers/media/video/gspca/conex.c b/drivers/media/video/gspca/conex.c
> index ea17b5d..f39fee0 100644
> --- a/drivers/media/video/gspca/conex.c
> +++ b/drivers/media/video/gspca/conex.c
> @@ -306,7 +306,7 @@ static void cx_sensor(struct gspca_dev*gspca_dev)
>  
>  	reg_w(gspca_dev, 0x0020, reg20, 8);
>  	reg_w(gspca_dev, 0x0028, reg28, 8);
> -	reg_w(gspca_dev, 0x0010, reg10, 8);
> +	reg_w(gspca_dev, 0x0010, reg10, 2);
>  	reg_w_val(gspca_dev, 0x0092, 0x03);
>  
>  	switch (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
> @@ -326,7 +326,7 @@ static void cx_sensor(struct gspca_dev*gspca_dev)
>  	}
>  	reg_w(gspca_dev, 0x007b, reg7b, 6);
>  	reg_w_val(gspca_dev, 0x00f8, 0x00);
> -	reg_w(gspca_dev, 0x0010, reg10, 8);
> +	reg_w(gspca_dev, 0x0010, reg10, 2);
>  	reg_w_val(gspca_dev, 0x0098, 0x41);
>  	for (i = 0; i < 11; i++) {
>  		if (i = 3 || i = 5 || i = 8)

Hi Dan,

Thanks for the patch. The bug is very very old (6 years, at least -
neither have I such a webcam).

Maybe the fix could have been

	reg_w(gspca_dev, 0x0010, reg10, sizeof reg10);

but it is OK for me.

Acked-by: Jean-Francois Moine <http://moinejf.free.fr>

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Jef		|		http://moinejf.free.fr/
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Re: [patch] [media] gspca: passing wrong length parameter to reg_w()

[Dan Carpenter]

On Wed, May 02, 2012 at 08:47:58AM +0200, Jean-Francois Moine wrote:
> Thanks for the patch. The bug is very very old (6 years, at least -
> neither have I such a webcam).
> 

My guess is that it's harmless to write a few extra garbage bits,
but it's still worth fixing as a cleanup.

> Maybe the fix could have been
> 
> 	reg_w(gspca_dev, 0x0010, reg10, sizeof reg10);
> 
> but it is OK for me.
> 
> Acked-by: Jean-Francois Moine <http://moinejf.free.fr>

Thanks.

regards,
dan carpenter