On 9/25/20 9:11 AM, Coiby Xu wrote:

On Thu, Sep 24, 2020 at 10:54:50AM +0000, David Laight wrote:

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From: Coiby Xu

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Sent: 24 September 2020 11:21 Use __8 to replace int and remove the unnecessary __bitwise type attribute.

Found by sparse,

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diff --git a/include/uapi/sound/asound.h b/include/uapi/sound/asound.h index 535a7229e1d9..8e71a95644ab 100644 --- a/include/uapi/sound/asound.h +++ b/include/uapi/sound/asound.h @@ -950,7 +950,7 @@ struct snd_ctl_card_info {      unsigned char components[128];    /* card components / fine identification, delimited with one space (AC97 etc..) */  };

-typedef int __bitwise snd_ctl_elem_type_t; +typedef __u8 snd_ctl_elem_type_t;  #define    SNDRV_CTL_ELEM_TYPE_NONE    ((__force snd_ctl_elem_type_t) 0) /* invalid */  #define    SNDRV_CTL_ELEM_TYPE_BOOLEAN    ((__force snd_ctl_elem_type_t) 1) /* boolean type */  #define    SNDRV_CTL_ELEM_TYPE_INTEGER    ((__force snd_ctl_elem_type_t) 2) /* integer type */

WTF is all that about anyway?? What is wrong with: #define    SNDRV_CTL_ELEM_TYPE_NONE    0u /* invalid */

I'm sorry I don't quite understand you. Are you suggesting SNDRV_CTL_ELEM_TYPE_NONE isn't needed in the first place?

I think David is asking why it's defined the way it is, and I'd guess it's to have the compiler issue an error if you attempt to assign one of these values to a variable or field of the wrong type.

No, you should not attempt to change this.

-Alex

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David

Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)

-- Best regards, Coiby _______________________________________________ greybus-dev mailing list greybus-dev@lists.linaro.org https://lists.linaro.org/mailman/listinfo/greybus-dev