[alsa-devel] [PATCH] ASoC: fsl: Correct FSL_SAI_CR2_MSEL_MASK definition

[Nicolin Chen]

Hello Iwai-san,

On Wed, Jun 03, 2015 at 02:51:01PM +0200, Takashi Iwai wrote:
> The bit mask FSL_SAI_CR2_MSEL_MASK is defined as (0xff << 26) and this
> obviously overflows the 32bit integer.  Also this clears other bits
> than the needed ones (FSL_SAI_CR2_MSEL_XXX) wrongly.
> 
> This patch fixes the definition only to mask bits 26 and 27.

An identical fix was included in the Commit c3ecef21c3f26bf47
(ASoC: fsl_sai: add sai master mode support) by Zidan Wang.
And it's already in the linux-next tree.

Thank you
Nicolin

> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=84351
> Reported-by: David Binderman <dcb314 at hotmail.com>
> Signed-off-by: Takashi Iwai <tiwai at suse.de>
> ---
>  sound/soc/fsl/fsl_sai.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/sound/soc/fsl/fsl_sai.h b/sound/soc/fsl/fsl_sai.h
> index 34667209b607..0e33a17ddd01 100644
> --- a/sound/soc/fsl/fsl_sai.h
> +++ b/sound/soc/fsl/fsl_sai.h
> @@ -72,7 +72,7 @@
>  
>  /* SAI Transmit and Recieve Configuration 2 Register */
>  #define FSL_SAI_CR2_SYNC	BIT(30)
> -#define FSL_SAI_CR2_MSEL_MASK	(0xff << 26)
> +#define FSL_SAI_CR2_MSEL_MASK	(0x03 << 26)
>  #define FSL_SAI_CR2_MSEL_BUS	0
>  #define FSL_SAI_CR2_MSEL_MCLK1	BIT(26)
>  #define FSL_SAI_CR2_MSEL_MCLK2	BIT(27)
> -- 
> 2.4.2
>