RE: [PATCH 2/6] staging: media: intel-ipu3: preferred __aligned(size) over __attribute__aligned(size)

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From: Mitali Borkar
> Sent: 12 April 2021 00:09
> 
> This patch fixes the warning identified by checkpatch.pl by replacing
> __attribute__aligned(size) with __aligned(size)
> 
> Signed-off-by: Mitali Borkar <mitaliborkar810@xxxxxxxxx>
> ---
>  .../staging/media/ipu3/include/intel-ipu3.h   | 74 +++++++++----------
>  1 file changed, 37 insertions(+), 37 deletions(-)
> 
> diff --git a/drivers/staging/media/ipu3/include/intel-ipu3.h
> b/drivers/staging/media/ipu3/include/intel-ipu3.h
> index 589d5ccee3a7..d95ca9ebfafb 100644
> --- a/drivers/staging/media/ipu3/include/intel-ipu3.h
> +++ b/drivers/staging/media/ipu3/include/intel-ipu3.h
> @@ -84,7 +84,7 @@ struct ipu3_uapi_grid_config {
>   */
>  struct ipu3_uapi_awb_raw_buffer {
>  	__u8 meta_data[IPU3_UAPI_AWB_MAX_BUFFER_SIZE]
> -		__attribute__((aligned(32)));
> +		__aligned(32);
>  } __packed;

WTF?

It either has 1-byte alignment because it is just __u8,
32-byte because of the aligned(32),
or 1 byte because of the outer packed.

What alignment does this (and all the other) structures
actually need?

Specifying 'packed' isn't free.

	David

-
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