linux-kernel - [PATCH] video: fbdev: radeon: make const array post

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Message-Id: <20170919213201.31845-1-colin.king@canonical.com>
Date:   Tue, 19 Sep 2017 22:32:01 +0100
From:   Colin King <colin.king@...onical.com>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        linux-fbdev@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] video: fbdev: radeon: make const array post_divs static, reduces object code size

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

Don't populate the read-only const array post_divs on the stack,
nstead make it static. Makes the object code smaller by 90 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
  40231	   8584	    896	  49711	   c22f	radeon_base.o

After:
   text	   data	    bss	    dec	    hex	filename
  39914	   8744	    960	  49618	   c1d2	radeon_base.o

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

diff --git a/drivers/video/fbdev/aty/radeon_base.c b/drivers/video/fbdev/aty/radeon_base.c
index 1e2ec360f8c1..8ad1643e7d1c 100644
--- a/drivers/video/fbdev/aty/radeon_base.c
+++ b/drivers/video/fbdev/aty/radeon_base.c
@@ -1534,7 +1534,7 @@ void radeon_write_mode (struct radeonfb_info *rinfo, struct radeon_regs *mode,
 static void radeon_calc_pll_regs(struct radeonfb_info *rinfo, struct radeon_regs *regs,
 				 unsigned long freq)
 {
-	const struct {
+	static const struct {
 		int divider;
 		int bitvalue;
 	} *post_div,
-- 
2.14.1