linux-kernel - [PATCH] ALSA: hda/ca0132: make some const arrays static, makes object smaller

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Date:   Fri, 16 Oct 2020 23:49:13 +0100
From:   Colin King <colin.king@...onical.com>
To:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        Connor McAdams <conmanx360@...il.com>,
        alsa-devel@...a-project.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ALSA: hda/ca0132: make some const arrays static, makes object smaller

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

Don't populate const arrays on the stack but instead make them
static. Makes the object code smaller by 57 bytes.

Before:
   text	   data	    bss	    dec	    hex	filename
 173256	  38016	    192	 211464	  33a08	sound/pci/hda/patch_ca0132.o

After:
   text	   data	    bss	    dec	    hex	filename
 172879	  38336	    192	 211407	  339cf	sound/pci/hda/patch_ca0132.o

(gcc version 10.2.0)

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 sound/pci/hda/patch_ca0132.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c
index 2b38b2a716a1..e0c38f2735c6 100644
--- a/sound/pci/hda/patch_ca0132.c
+++ b/sound/pci/hda/patch_ca0132.c
@@ -7910,8 +7910,12 @@ static void ae7_post_dsp_asi_stream_setup(struct hda_codec *codec)
 
 static void ae7_post_dsp_pll_setup(struct hda_codec *codec)
 {
-	const unsigned int addr[] = { 0x41, 0x45, 0x40, 0x43, 0x51 };
-	const unsigned int data[] = { 0xc8, 0xcc, 0xcb, 0xc7, 0x8d };
+	static const unsigned int addr[] = {
+		0x41, 0x45, 0x40, 0x43, 0x51
+	};
+	static const unsigned int data[] = {
+		0xc8, 0xcc, 0xcb, 0xc7, 0x8d
+	};
 	unsigned int i;
 
 	for (i = 0; i < ARRAY_SIZE(addr); i++) {
@@ -7925,10 +7929,12 @@ static void ae7_post_dsp_pll_setup(struct hda_codec *codec)
 static void ae7_post_dsp_asi_setup_ports(struct hda_codec *codec)
 {
 	struct ca0132_spec *spec = codec->spec;
-	const unsigned int target[] = { 0x0b, 0x04, 0x06, 0x0a, 0x0c, 0x11,
-					0x12, 0x13, 0x14 };
-	const unsigned int data[]   = { 0x12, 0x00, 0x48, 0x05, 0x5f, 0xff,
-					0xff, 0xff, 0x7f };
+	static const unsigned int target[] = {
+		0x0b, 0x04, 0x06, 0x0a, 0x0c, 0x11, 0x12, 0x13, 0x14
+	};
+	static const unsigned int data[] = {
+		0x12, 0x00, 0x48, 0x05, 0x5f, 0xff, 0xff, 0xff, 0x7f
+	};
 	unsigned int i;
 
 	mutex_lock(&spec->chipio_mutex);
-- 
2.27.0