linux-kernel - Re: [PATCH] staging: pi433: Fixes issue with bit shift in rf69_get

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Date:   Wed, 6 Dec 2017 10:02:28 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Marcus Wolf <linux@...f-entwicklungen.de>
Cc:     dan.carpenter@...cle.com, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: pi433: Fixes issue with bit shift in
 rf69_get_modulation

On Wed, Nov 08, 2017 at 07:13:56PM +0200, Marcus Wolf wrote:
> Fixes issue with bit shift in rf69_get_modulation

What "issue"?

> 
> Signed-off-by: Marcus Wolf <linux@...f-entwicklungen.de>
> ---
>  drivers/staging/pi433/rf69.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/pi433/rf69.c b/drivers/staging/pi433/rf69.c
> index 290b419..c945b4b 100644
> --- a/drivers/staging/pi433/rf69.c
> +++ b/drivers/staging/pi433/rf69.c
> @@ -102,7 +102,7 @@ enum modulation rf69_get_modulation(struct spi_device *spi)
>  
>  	currentValue = READ_REG(REG_DATAMODUL);
>  
> -	switch (currentValue & MASK_DATAMODUL_MODULATION_TYPE >> 3) { // TODO improvement: change 3 to define
> +	switch (currentValue & MASK_DATAMODUL_MODULATION_TYPE) {

Doesn't this change the logic here?

thanks,

greg k-h