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SubjectRe: [PATCH] HID: Reorder fields in 'struct hid_field'
On Sun, Jun 18, 2023 at 10:08:07AM +0200, Christophe JAILLET wrote:
> diff --git a/include/linux/hid.h b/include/linux/hid.h
> index 39e21e3815ad..5be5e671c263 100644
> --- a/include/linux/hid.h
> +++ b/include/linux/hid.h
> @@ -480,9 +480,9 @@ struct hid_field {
> __s32 physical_maximum;
> __s32 unit_exponent;
> unsigned unit;
> - bool ignored; /* this field is ignored in this event */
> struct hid_report *report; /* associated report */
> unsigned index; /* index into report->field[] */
> + bool ignored; /* this field is ignored in this event */
> /* hidinput data */
> struct hid_input *hidinput; /* associated input structure */
> __u16 dpad; /* dpad input code */

You could move the dpad next to the ignored to save another 4 bytes.
I think it is still grouped logically that way but I don't really know
what dpad is so I might be wrong.

struct hid_report *report; /* associated report */
unsigned index; /* index into report->field[] */
bool ignored; /* this field is ignored in this event */
/* hidinput data */
__u16 dpad; /* dpad input code */
struct hid_input *hidinput; /* associated input structure */

regards,
dan carpenter

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