diff mbox

media: omap3isp: fix uninitialized variable use

Message ID 20170823135827.l7fgozsbhw5opyy3@valkosipuli.retiisi.org.uk (mailing list archive)
State New, archived
Headers show

Commit Message

Sakari Ailus Aug. 23, 2017, 1:58 p.m. UTC 
Hi Arnd,

On Wed, Aug 23, 2017 at 03:30:19PM +0200, Arnd Bergmann wrote:
> A debug printk statement was copied incorrectly into the new
> csi1 parser code and causes a warning there:
> 
> drivers/media/platform/omap3isp/isp.c: In function 'isp_probe':
> include/linux/dynamic_debug.h:134:3: error: 'i' may be used uninitialized in this function [-Werror=maybe-uninitialized]
> 
> Since there is only one lane, the index is never set. This
> changes the debug print to always print a zero instead,
> keeping the original format of the message.
> 
> Fixes: 9211434bad30 ("media: omap3isp: Parse CSI1 configuration from the device tree")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>  drivers/media/platform/omap3isp/isp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
> index 83aea08b832d..30c825bf80d9 100644
> --- a/drivers/media/platform/omap3isp/isp.c
> +++ b/drivers/media/platform/omap3isp/isp.c
> @@ -2092,7 +2092,7 @@ static int isp_fwnode_parse(struct device *dev, struct fwnode_handle *fwnode,
>  			buscfg->bus.ccp2.lanecfg.data[0].pol =
>  				vep.bus.mipi_csi1.lane_polarity[1];
>  
> -			dev_dbg(dev, "data lane %u polarity %u, pos %u\n", i,
> +			dev_dbg(dev, "data lane 0 polarity %u, pos %u\n",
>  				buscfg->bus.ccp2.lanecfg.data[0].pol,
>  				buscfg->bus.ccp2.lanecfg.data[0].pos);
>  

Thanks! I removed "0 "; CCP2 always has a single lane. The patch is now:

Comments

Sebastian Reichel Aug. 23, 2017, 3:35 p.m. UTC | #1 
Hi,

On Wed, Aug 23, 2017 at 04:58:27PM +0300, Sakari Ailus wrote:
> On Wed, Aug 23, 2017 at 03:30:19PM +0200, Arnd Bergmann wrote:
> > A debug printk statement was copied incorrectly into the new
> > csi1 parser code and causes a warning there:
> > 
> > drivers/media/platform/omap3isp/isp.c: In function 'isp_probe':
> > include/linux/dynamic_debug.h:134:3: error: 'i' may be used uninitialized in this function [-Werror=maybe-uninitialized]
> > 
> > Since there is only one lane, the index is never set. This
> > changes the debug print to always print a zero instead,
> > keeping the original format of the message.
> > 
> > Fixes: 9211434bad30 ("media: omap3isp: Parse CSI1 configuration from the device tree")
> > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> > ---
> >  drivers/media/platform/omap3isp/isp.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
> > index 83aea08b832d..30c825bf80d9 100644
> > --- a/drivers/media/platform/omap3isp/isp.c
> > +++ b/drivers/media/platform/omap3isp/isp.c
> > @@ -2092,7 +2092,7 @@ static int isp_fwnode_parse(struct device *dev, struct fwnode_handle *fwnode,
> >  			buscfg->bus.ccp2.lanecfg.data[0].pol =
> >  				vep.bus.mipi_csi1.lane_polarity[1];
> >  
> > -			dev_dbg(dev, "data lane %u polarity %u, pos %u\n", i,
> > +			dev_dbg(dev, "data lane 0 polarity %u, pos %u\n",
> >  				buscfg->bus.ccp2.lanecfg.data[0].pol,
> >  				buscfg->bus.ccp2.lanecfg.data[0].pos);
> >  
> 
> Thanks! I removed "0 "; CCP2 always has a single lane. The patch is now:
> 
> diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
> index 83aea08b832d..1a428fe9f070 100644
> --- a/drivers/media/platform/omap3isp/isp.c
> +++ b/drivers/media/platform/omap3isp/isp.c
> @@ -2092,7 +2092,7 @@ static int isp_fwnode_parse(struct device *dev, struct fwnode_handle *fwnode,
>  			buscfg->bus.ccp2.lanecfg.data[0].pol =
>  				vep.bus.mipi_csi1.lane_polarity[1];
>  
> -			dev_dbg(dev, "data lane %u polarity %u, pos %u\n", i,
> +			dev_dbg(dev, "data lane polarity %u, pos %u\n",
>  				buscfg->bus.ccp2.lanecfg.data[0].pol,
>  				buscfg->bus.ccp2.lanecfg.data[0].pos);

Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>

-- Sebastian
diff mbox

Patch

diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index 83aea08b832d..1a428fe9f070 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -2092,7 +2092,7 @@  static int isp_fwnode_parse(struct device *dev, struct fwnode_handle *fwnode,
 			buscfg->bus.ccp2.lanecfg.data[0].pol =
 				vep.bus.mipi_csi1.lane_polarity[1];
 
-			dev_dbg(dev, "data lane %u polarity %u, pos %u\n", i,
+			dev_dbg(dev, "data lane polarity %u, pos %u\n",
 				buscfg->bus.ccp2.lanecfg.data[0].pol,
 				buscfg->bus.ccp2.lanecfg.data[0].pos);