[PATCH 1/1] [media] ite-cir: initialize use_demodulator before using it

[PATCH 1/1] [media] ite-cir: initialize use_demodulator before using it

[Nicolas Iooss]

Function ite_set_carrier_params() uses variable use_demodulator after
having initialized it to false in some if branches, but this variable is
never set to true otherwise.

This bug has been found using clang -Wsometimes-uninitialized warning
flag.

Fixes: 620a32bba4a2 ("[media] rc: New rc-based ite-cir driver for
several ITE CIRs")
Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
---
 drivers/media/rc/ite-cir.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/rc/ite-cir.c b/drivers/media/rc/ite-cir.c
index 0f301903aa6f..63165d324fff 100644
--- a/drivers/media/rc/ite-cir.c
+++ b/drivers/media/rc/ite-cir.c
@@ -263,6 +263,8 @@ static void ite_set_carrier_params(struct ite_dev *dev)
 
 			if (allowance > ITE_RXDCR_MAX)
 				allowance = ITE_RXDCR_MAX;
+
+			use_demodulator = true;
 		}
 	}
 
-- 
2.9.3

Re: [PATCH 1/1] [media] ite-cir: initialize use_demodulator before using it

[Nicolas Iooss]

Hello,

I sent the following patch (available on
https://patchwork.kernel.org/patch/9325039/) a few weeks ago and got no
feedback even though the bug it fixes seems to still exist in
linux-next. Did I do something wrong, like sending to the wrong maintainers?

Thanks,
Nicolas

On 10/09/16 18:59, Nicolas Iooss wrote:
> Function ite_set_carrier_params() uses variable use_demodulator after
> having initialized it to false in some if branches, but this variable is
> never set to true otherwise.
> 
> This bug has been found using clang -Wsometimes-uninitialized warning
> flag.
> 
> Fixes: 620a32bba4a2 ("[media] rc: New rc-based ite-cir driver for
> several ITE CIRs")
> Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
> ---
>  drivers/media/rc/ite-cir.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/media/rc/ite-cir.c b/drivers/media/rc/ite-cir.c
> index 0f301903aa6f..63165d324fff 100644
> --- a/drivers/media/rc/ite-cir.c
> +++ b/drivers/media/rc/ite-cir.c
> @@ -263,6 +263,8 @@ static void ite_set_carrier_params(struct ite_dev *dev)
>  
>  			if (allowance > ITE_RXDCR_MAX)
>  				allowance = ITE_RXDCR_MAX;
> +
> +			use_demodulator = true;
>  		}
>  	}
>  
>