linux-kernel - [PATCH 2/4 v2] ASoC: wm8750: Use snd_soc_update

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 04 Oct 2011 11:17:24 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...com>, alsa-devel@...a-project.org,
	Richard Purdie <rpurdie@...ys.net>
Subject: [PATCH 2/4 v2] ASoC: wm8750: Use snd_soc_update_bits for
 read-modify-write

Use snd_soc_update_bits for read-modify-write register access instead of
open-coding it using snd_soc_read and snd_soc_write

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
v2: also remove unused variable 'reg'.
 sound/soc/codecs/wm8750.c |   26 +++++++++-----------------
 1 files changed, 9 insertions(+), 17 deletions(-)

diff --git a/sound/soc/codecs/wm8750.c b/sound/soc/codecs/wm8750.c
index 15f0372..862c520 100644
--- a/sound/soc/codecs/wm8750.c
+++ b/sound/soc/codecs/wm8750.c
@@ -694,7 +694,7 @@ static int wm8750_resume(struct snd_soc_codec *codec)
 static int wm8750_probe(struct snd_soc_codec *codec)
 {
 	struct wm8750_priv *wm8750 = snd_soc_codec_get_drvdata(codec);
-	int reg, ret;
+	int ret;
 
 	ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8750->control_type);
 	if (ret < 0) {
@@ -712,22 +712,14 @@ static int wm8750_probe(struct snd_soc_codec *codec)
 	wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 
 	/* set the update bits */
-	reg = snd_soc_read(codec, WM8750_LDAC);
-	snd_soc_write(codec, WM8750_LDAC, reg | 0x0100);
-	reg = snd_soc_read(codec, WM8750_RDAC);
-	snd_soc_write(codec, WM8750_RDAC, reg | 0x0100);
-	reg = snd_soc_read(codec, WM8750_LOUT1V);
-	snd_soc_write(codec, WM8750_LOUT1V, reg | 0x0100);
-	reg = snd_soc_read(codec, WM8750_ROUT1V);
-	snd_soc_write(codec, WM8750_ROUT1V, reg | 0x0100);
-	reg = snd_soc_read(codec, WM8750_LOUT2V);
-	snd_soc_write(codec, WM8750_LOUT2V, reg | 0x0100);
-	reg = snd_soc_read(codec, WM8750_ROUT2V);
-	snd_soc_write(codec, WM8750_ROUT2V, reg | 0x0100);
-	reg = snd_soc_read(codec, WM8750_LINVOL);
-	snd_soc_write(codec, WM8750_LINVOL, reg | 0x0100);
-	reg = snd_soc_read(codec, WM8750_RINVOL);
-	snd_soc_write(codec, WM8750_RINVOL, reg | 0x0100);
+	snd_soc_update_bits(codec, WM8750_LDAC, 0x0100, 0x0100);
+	snd_soc_update_bits(codec, WM8750_RDAC, 0x0100, 0x0100);
+	snd_soc_update_bits(codec, WM8750_LOUT1V, 0x0100, 0x0100);
+	snd_soc_update_bits(codec, WM8750_ROUT1V, 0x0100, 0x0100);
+	snd_soc_update_bits(codec, WM8750_LOUT2V, 0x0100, 0x0100);
+	snd_soc_update_bits(codec, WM8750_ROUT2V, 0x0100, 0x0100);
+	snd_soc_update_bits(codec, WM8750_LINVOL, 0x0100, 0x0100);
+	snd_soc_update_bits(codec, WM8750_RINVOL, 0x0100, 0x0100);
 
 	snd_soc_add_controls(codec, wm8750_snd_controls,
 				ARRAY_SIZE(wm8750_snd_controls));
-- 
1.7.4.1



--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/