linux-kernel - [PATCH][V2] staging: fbtft: make const array gamma_par

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Message-Id: <20170711174927.21072-1-colin.king@canonical.com>
Date:   Tue, 11 Jul 2017 18:49:27 +0100
From:   Colin King <colin.king@...onical.com>
To:     Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH][V2] staging: fbtft: make const array gamma_par_mask static

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

Don't populate array gamma_par_mask on the stack but instead make it
static.  Makes the object code smaller by 148 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
   2993	   1104	      0	   4097	   1001	drivers/staging/fbtft/fb_st7789v.o

After:
   text	   data	    bss	    dec	    hex	filename
   2757	   1192	      0	   3949	    f6d	drivers/staging/fbtft/fb_st7789v.o

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/staging/fbtft/fb_st7789v.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/fbtft/fb_st7789v.c b/drivers/staging/fbtft/fb_st7789v.c
index 8935a97ec048..a5d7c87557f8 100644
--- a/drivers/staging/fbtft/fb_st7789v.c
+++ b/drivers/staging/fbtft/fb_st7789v.c
@@ -189,7 +189,7 @@ static int set_gamma(struct fbtft_par *par, u32 *curves)
 	 * The masks are the same for both positive and negative voltage
 	 * gamma curves.
 	 */
-	const u8 gamma_par_mask[] = {
+	static const u8 gamma_par_mask[] = {
 		0xFF, /* V63[3:0], V0[3:0]*/
 		0x3F, /* V1[5:0] */
 		0x3F, /* V2[5:0] */
-- 
2.11.0