linux-kernel - [PATCH] ASoC: cs42l56: fix DT probe

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Message-Id: <20230126135552.3625887-1-arnd@kernel.org>
Date:   Thu, 26 Jan 2023 14:55:29 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     James Schulman <james.schulman@...rus.com>,
        David Rhodes <david.rhodes@...rus.com>,
        Lucas Tanure <tanureal@...nsource.cirrus.com>,
        Richard Fitzgerald <rf@...nsource.cirrus.com>
Cc:     linux-gpio@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        Wolfram Sang <wsa@...nel.org>, alsa-devel@...a-project.org,
        patches@...nsource.cirrus.com, linux-kernel@...r.kernel.org
Subject: [PATCH] ASoC: cs42l56: fix DT probe

From: Arnd Bergmann <arnd@...db.de>

While looking through legacy platform data users, I noticed that
this one could never be used with DT based probing as the
platform_data structure gets overwritten directly after it
is initialized.

There have never been any boards defining the platform_data in
the mainline kernel either, so this driver so far only worked
with patched kernels.

For the benefit of possible downstream users, fix the DT probe
by no longer overwriting the data.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 sound/soc/codecs/cs42l56.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/sound/soc/codecs/cs42l56.c b/sound/soc/codecs/cs42l56.c
index 26066682c983..3b0e715549c9 100644
--- a/sound/soc/codecs/cs42l56.c
+++ b/sound/soc/codecs/cs42l56.c
@@ -1191,18 +1191,12 @@ static int cs42l56_i2c_probe(struct i2c_client *i2c_client)
 	if (pdata) {
 		cs42l56->pdata = *pdata;
 	} else {
-		pdata = devm_kzalloc(&i2c_client->dev, sizeof(*pdata),
-				     GFP_KERNEL);
-		if (!pdata)
-			return -ENOMEM;
-
 		if (i2c_client->dev.of_node) {
 			ret = cs42l56_handle_of_data(i2c_client,
 						     &cs42l56->pdata);
 			if (ret != 0)
 				return ret;
 		}
-		cs42l56->pdata = *pdata;
 	}
 
 	if (cs42l56->pdata.gpio_nreset) {
-- 
2.39.0