linux-kernel - [PATCH] mmc: dw_mmc: hi3798cv200: make array degrees static const, makes object smaller

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Message-Id: <20190906091719.24886-1-colin.king@canonical.com>
Date:   Fri,  6 Sep 2019 10:17:19 +0100
From:   Colin King <colin.king@...onical.com>
To:     Jaehoon Chung <jh80.chung@...sung.com>,
        Ulf Hansson <ulf.hansson@...aro.org>, linux-mmc@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] mmc: dw_mmc: hi3798cv200: make array degrees static const, makes object smaller

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

Don't populate the array degrees on the stack but instead make it
static const. Makes the object code smaller by 46 bytes.

Before:
   text	   data	    bss	    dec	    hex	filename
   5356	   1560	      0	   6916	   1b04	dw_mmc-hi3798cv200.o

After:
   text	   data	    bss	    dec	    hex	filename
   5214	   1656	      0	   6870	   1ad6	dw_mmc-hi3798cv200.o

(gcc version 9.2.1, amd64)

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/mmc/host/dw_mmc-hi3798cv200.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/dw_mmc-hi3798cv200.c b/drivers/mmc/host/dw_mmc-hi3798cv200.c
index bc51cef47c47..83e1bad0a008 100644
--- a/drivers/mmc/host/dw_mmc-hi3798cv200.c
+++ b/drivers/mmc/host/dw_mmc-hi3798cv200.c
@@ -66,7 +66,7 @@ static void dw_mci_hi3798cv200_set_ios(struct dw_mci *host, struct mmc_ios *ios)
 static int dw_mci_hi3798cv200_execute_tuning(struct dw_mci_slot *slot,
 					     u32 opcode)
 {
-	int degrees[] = { 0, 45, 90, 135, 180, 225, 270, 315 };
+	static const int degrees[] = { 0, 45, 90, 135, 180, 225, 270, 315 };
 	struct dw_mci *host = slot->host;
 	struct hi3798cv200_priv *priv = host->priv;
 	int raise_point = -1, fall_point = -1;
-- 
2.20.1