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Groups > linux.kernel > #1737519

[PATCH] brcm80211: make const array ucode_ofdm_rates static, reduces object code size

From Colin King <colin.king@canonical.com>
Newsgroups linux.kernel
Subject [PATCH] brcm80211: make const array ucode_ofdm_rates static, reduces object code size
Date 2017-09-22 16:10 +0200
Message-ID <uswOu-72F-7@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

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From: Colin Ian King <colin.king@canonical.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@canonical.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

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[PATCH] brcm80211: make const array ucode_ofdm_rates static, reduces object code size Colin King <colin.king@canonical.com> - 2017-09-22 16:10 +0200
  Re: [PATCH] brcm80211: make const array ucode_ofdm_rates static,  reduces object code size Arend van Spriel <arend.vanspriel@broadcom.com> - 2017-09-22 19:00 +0200
    Re: [PATCH] brcm80211: make const array ucode_ofdm_rates static, reduces object code size Kalle Valo <kvalo@codeaurora.org> - 2017-09-25 06:30 +0200
  Re: brcmsmac: make const array ucode_ofdm_rates static,  reduces object code size Kalle Valo <kvalo@codeaurora.org> - 2017-09-25 10:30 +0200

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