linux-kernel - [PATCH] regulator: rt5190a: check if init_data is NULL, bypass rt5190a_of_parse

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Message-Id: <1654148646-12182-1-git-send-email-u0084500@gmail.com>
Date:   Thu,  2 Jun 2022 13:44:06 +0800
From:   cy_huang <u0084500@...il.com>
To:     broonie@...nel.org
Cc:     lgirdwood@...il.com, cy_huang@...htek.com,
        linux-kernel@...r.kernel.org
Subject: [PATCH] regulator: rt5190a: check if init_data is NULL, bypass rt5190a_of_parse_cb

From: ChiYuan Huang <cy_huang@...htek.com>

If the node for the match name cannot be found, 'of_regulator_match' will
returns init_data as NULL for this regulator.

Add the check for the init_data. If it's NULL, make 'rt5190a_of_parse_cb'
function directly return.

Signed-off-by: ChiYuan Huang <cy_huang@...htek.com>
---
 drivers/regulator/rt5190a-regulator.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/regulator/rt5190a-regulator.c b/drivers/regulator/rt5190a-regulator.c
index 155d4af..4a3397b 100644
--- a/drivers/regulator/rt5190a-regulator.c
+++ b/drivers/regulator/rt5190a-regulator.c
@@ -224,6 +224,9 @@ static int rt5190a_of_parse_cb(struct rt5190a_priv *priv, int rid,
 	bool latchup_enable;
 	unsigned int mask = RT5190A_RID_BITMASK(rid), val;
 
+	if (!init_data)
+		return 0;
+
 	switch (rid) {
 	case RT5190A_IDX_BUCK1:
 	case RT5190A_IDX_BUCK4:
-- 
2.7.4