diff mbox series

HID: logitech-hidpp: HID: make const array consumer_rdesc_start static

Message ID 20190510131722.5023-1-colin.king@canonical.com (mailing list archive)
State Mainlined
Commit a96a8a576bf5cc45534d0079d7006fc3fe25282b
Delegated to: Jiri Kosina
Headers show
Series HID: logitech-hidpp: HID: make const array consumer_rdesc_start static | expand

Commit Message

Colin King May 10, 2019, 1:17 p.m. UTC
From: Colin Ian King <colin.king@canonical.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@canonical.com>
---
 drivers/hid/hid-logitech-hidpp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Jiri Kosina May 22, 2019, 11:19 a.m. UTC | #1
On Fri, 10 May 2019, Colin King wrote:

> From: Colin Ian King <colin.king@canonical.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@canonical.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.
diff mbox series

Patch

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)            */