linux-kernel - [PATCH] nfc: s3fwrn5: make array match static const, reduces object code size

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 19 Sep 2017 15:25:15 +0100
From:   Colin King <colin.king@...onical.com>
To:     Robert Baldyga <r.baldyga@...sung.com>,
        Krzysztof Opasiak <k.opasiak@...sung.com>,
        Samuel Ortiz <sameo@...ux.intel.com>, linux-nfc@...ts.01.org,
        linux-wireless@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] nfc: s3fwrn5: make array match static const, reduces object code size

From: Colin Ian King <colin.king@...onical.com>

Don't populate the read-only array match on the stack, instead make
it static const.  Makes the object code smaller by over 310 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
   8304	   1084	    128	   9516	   252c	drivers/nfc/s3fwrn5/firmware.o

After:
   text	   data	    bss	    dec	    hex	filename
   7894	   1180	    128	   9202	   23f2	drivers/nfc/s3fwrn5/firmware.o

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/nfc/s3fwrn5/firmware.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nfc/s3fwrn5/firmware.c b/drivers/nfc/s3fwrn5/firmware.c
index 38548bd970cd..b7828fb252f2 100644
--- a/drivers/nfc/s3fwrn5/firmware.c
+++ b/drivers/nfc/s3fwrn5/firmware.c
@@ -336,7 +336,7 @@ static int s3fwrn5_fw_get_base_addr(
 	struct s3fwrn5_fw_cmd_get_bootinfo_rsp *bootinfo, u32 *base_addr)
 {
 	int i;
-	struct {
+	static const struct {
 		u8 version[4];
 		u32 base_addr;
 	} match[] = {
-- 
2.14.1