[PATCH] input: byd: make array seq static, reduces object code size

Subsystems: input (keyboard, mouse, joystick, touchscreen) drivers, the rest

STALE3294d

2 messages, 2 authors, 2017-08-31 · open the first message on its own page

[PATCH] input: byd: make array seq static, reduces object code size

From: Colin King <hidden>
Date: 2017-08-31 12:47:33

From: Colin Ian King <redacted>

Don't populate the array seq on the stack, instead make it static.
Makes the object code smaller by over 1100 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
   6152	   1216	     64	   7432	   1d08	drivers/input/mouse/byd.o

After:
   text	   data	    bss	    dec	    hex	filename
   4974	   1280	     64	   6318	   18ae	drivers/input/mouse/byd.o

Signed-off-by: Colin Ian King <redacted>
---
 drivers/input/mouse/byd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/input/mouse/byd.c b/drivers/input/mouse/byd.c
index b27aa637f877..b64b81599f7e 100644
--- a/drivers/input/mouse/byd.c
+++ b/drivers/input/mouse/byd.c
@@ -344,7 +344,7 @@ static int byd_reset_touchpad(struct psmouse *psmouse)
 	u8 param[4];
 	size_t i;
 
-	const struct {
+	static const struct {
 		u16 command;
 		u8 arg;
 	} seq[] = {
-- 
2.14.1

Re: [PATCH] input: byd: make array seq static, reduces object code size

From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: 2017-08-31 16:31:13

On Thu, Aug 31, 2017 at 01:47:30PM +0100, Colin King wrote:
From: Colin Ian King <redacted>

Don't populate the array seq on the stack, instead make it static.
Makes the object code smaller by over 1100 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
   6152	   1216	     64	   7432	   1d08	drivers/input/mouse/byd.o

After:
   text	   data	    bss	    dec	    hex	filename
   4974	   1280	     64	   6318	   18ae	drivers/input/mouse/byd.o

Signed-off-by: Colin Ian King <redacted>
Applied, thank you.
quoted hunk
---
 drivers/input/mouse/byd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/input/mouse/byd.c b/drivers/input/mouse/byd.c
index b27aa637f877..b64b81599f7e 100644
--- a/drivers/input/mouse/byd.c
+++ b/drivers/input/mouse/byd.c
@@ -344,7 +344,7 @@ static int byd_reset_touchpad(struct psmouse *psmouse)
 	u8 param[4];
 	size_t i;
 
-	const struct {
+	static const struct {
 		u16 command;
 		u8 arg;
 	} seq[] = {
-- 
2.14.1
-- 
Dmitry
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