linux-kernel - [PATCH] brcm80211: make const array ucode_ofdm

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Message-Id: <20170922140316.12768-1-colin.king@canonical.com>
Date:   Fri, 22 Sep 2017 15:03:16 +0100
From:   Colin King <colin.king@...onical.com>
To:     Arend van Spriel <arend.vanspriel@...adcom.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Chi-Hsien Lin <chi-hsien.lin@...ress.com>,
        Wright Feng <wright.feng@...ress.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        linux-wireless@...r.kernel.org,
        brcm80211-dev-list.pdl@...adcom.com,
        brcm80211-dev-list@...ress.com, netdev@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] brcm80211: make const array ucode_ofdm_rates static, reduces object code size

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

Don't populate const array ucode_ofdm_rates on the stack, instead make it
static. Makes the object code smaller by 100 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
  39482	    564	      0	  40046	   9c6e	phy_cmn.o

After
   text	   data	    bss	    dec	    hex	filename
  39326	    620	      0	  39946	   9c0a	phy_cmn.o

(gcc 6.3.0, x86-64)

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c
index 1c4e9dd57960..3a13d176b221 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c
@@ -1916,7 +1916,7 @@ void wlc_phy_txpower_update_shm(struct brcms_phy *pi)
 				     pi->hwpwr_txcur);
 
 		for (j = TXP_FIRST_OFDM; j <= TXP_LAST_OFDM; j++) {
-			const u8 ucode_ofdm_rates[] = {
+			static const u8 ucode_ofdm_rates[] = {
 				0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c
 			};
 			offset = wlapi_bmac_rate_shm_offset(
-- 
2.14.1