linux-kernel - [PATCH] extcon: int3496: constify acpi_device

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Message-Id: <dcce788befa9d8e0fa849c21229ea356efdb70b0.1499360077.git.arvind.yadav.cs@gmail.com>
Date:   Thu,  6 Jul 2017 22:25:56 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     myungjoo.ham@...sung.com, cw00.choi@...sung.com
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] extcon: int3496: constify acpi_device_id.

acpi_device_id are not supposed to change at runtime. All functions
working with acpi_device_id provided by <acpi/acpi_bus.h> work with
const acpi_device_id. So mark the non-const structs as const.

File size before:
   text	   data	    bss	    dec	    hex	filename
   1733	    352	      0	   2085	    825 drivers/extcon/extcon-intel-int3496.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
   1797	    272	      0	   2069	    815 drivers/extcon/extcon-intel-int3496.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/extcon/extcon-intel-int3496.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/extcon/extcon-intel-int3496.c b/drivers/extcon/extcon-intel-int3496.c
index 9d17984..49bf9c6 100644
--- a/drivers/extcon/extcon-intel-int3496.c
+++ b/drivers/extcon/extcon-intel-int3496.c
@@ -174,7 +174,7 @@ static int int3496_remove(struct platform_device *pdev)
 	return 0;
 }

-static struct acpi_device_id int3496_acpi_match[] = {
+static const struct acpi_device_id int3496_acpi_match[] = {
 	{ "INT3496" },
 	{ }
 };
-- 
2.7.4