From 771725efe5e2e5396dd9d1220437e5f9d6b9ca9d Mon Sep 17 00:00:00 2001
From: Steffen Aschbacher <steffen.aschbacher@stihl.de>
Date: Mon, 13 Feb 2023 09:38:05 +0200
Subject: [PATCH] ASoC: tlv320adcx140: fix 'ti,gpio-config' DT property init
Git-commit: 771725efe5e2e5396dd9d1220437e5f9d6b9ca9d
Patch-mainline: v6.3-rc1
References: git-fixes

When the 'ti,gpio-config' property is not defined, the
device_property_count_u32() will return an error, rather than zero.

The current check, only handles a return value of zero, which assumes that
the property is defined and has nothing defined.

This change extends the check to also check for an error case (most likely
to be hit by the case that the 'ti,gpio-config' is not defined).

In case that the 'ti,gpio-config' and the returned 'gpio_count' is not
correct, there is a 'if (gpio_count != ADCX140_NUM_GPIO_CFGS)' check, a few
lines lower that will return -EINVAL.
This means that someone tried to define 'ti,gpio-config', but with the
wrong number of GPIOs.

Fixes: d5214321498a ("ASoC: tlv320adcx140: Add support for configuring GPIO pin")
Signed-off-by: Steffen Aschbacher <steffen.aschbacher@stihl.de>
Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>
Link: https://lore.kernel.org/r/20230213073805.14640-1-alex@shruggie.ro
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 sound/soc/codecs/tlv320adcx140.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/tlv320adcx140.c b/sound/soc/codecs/tlv320adcx140.c
index 91a22d927915..530f321d08e9 100644
--- a/sound/soc/codecs/tlv320adcx140.c
+++ b/sound/soc/codecs/tlv320adcx140.c
@@ -925,7 +925,7 @@ static int adcx140_configure_gpio(struct adcx140_priv *adcx140)
 
 	gpio_count = device_property_count_u32(adcx140->dev,
 			"ti,gpio-config");
-	if (gpio_count == 0)
+	if (gpio_count <= 0)
 		return 0;
 
 	if (gpio_count != ADCX140_NUM_GPIO_CFGS)
-- 
2.35.3