linux-kernel - Re: [PATCH] HID: logitech-hidpp: HID: make const array consumer_rdesc

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Date:   Wed, 22 May 2019 13:19:30 +0200 (CEST)
From:   Jiri Kosina <jikos@...nel.org>
To:     Colin King <colin.king@...onical.com>
cc:     Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        linux-input@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] HID: logitech-hidpp: HID: make const array consumer_rdesc_start
 static

On Fri, 10 May 2019, Colin King wrote:

> From: Colin Ian King <colin.king@...onical.com>
> 
> Don't populate the array consumer_rdesc_start on the stack but instead
> make it static. Makes the object code smaller by 88 bytes.
> 
> Before:
>    text	   data	    bss	    dec	    hex	filename
>   59155	   9840	    448	  69443	  10f43	drivers/hid/hid-logitech-hidpp.o
> 
> After:
>    text	   data	    bss	    dec	    hex	filename
>   59003	   9904	    448	  69355	  10eeb	drivers/hid/hid-logitech-hidpp.o
> 
> (gcc version 8.3.0, amd64)
> 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  drivers/hid/hid-logitech-hidpp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
> index 72fc9c0566db..df960491e473 100644
> --- a/drivers/hid/hid-logitech-hidpp.c
> +++ b/drivers/hid/hid-logitech-hidpp.c
> @@ -2862,7 +2862,7 @@ static u8 *hidpp10_consumer_keys_report_fixup(struct hidpp_device *hidpp,
>  					      u8 *_rdesc, unsigned int *rsize)
>  {
>  	/* Note 0 terminated so we can use strnstr to search for this. */
> -	const char consumer_rdesc_start[] = {
> +	static const char consumer_rdesc_start[] = {
>  		0x05, 0x0C,	/* USAGE_PAGE (Consumer Devices)       */
>  		0x09, 0x01,	/* USAGE (Consumer Control)            */
>  		0xA1, 0x01,	/* COLLECTION (Application)            */

Applied, thanks Colin.

-- 
Jiri Kosina
SUSE Labs