linux-kernel - [PATCH v3] regmap-irq: Add missing kfree()

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Message-Id: <20250205004343.14413-1-jiashengjiangcool@gmail.com>
Date: Wed,  5 Feb 2025 00:43:43 +0000
From: Jiasheng Jiang <jiashengjiangcool@...il.com>
To: mazziesaccount@...il.com
Cc: broonie@...nel.org,
	dakr@...nel.org,
	gregkh@...uxfoundation.org,
	jiashengjiangcool@...il.com,
	linux-kernel@...r.kernel.org,
	rafael@...nel.org,
	stable@...r.kernel.org
Subject: [PATCH v3] regmap-irq: Add missing kfree()

Add kfree() for "d->main_status_buf" to the error-handling path to prevent
a memory leak.

Fixes: a2d21848d921 ("regmap: regmap-irq: Add main status register support")
Cc: <stable@...r.kernel.org>  # v5.1+
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@...il.com>
---
Changelog:

v2 -> v3:

1. Add kfree() to regmap_del_irq_chip().

v1 -> v2:

1. Add a cc: stable line.
---
 drivers/base/regmap/regmap-irq.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index 0bcd81389a29..978613407ea3 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -906,6 +906,7 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 	kfree(d->wake_buf);
 	kfree(d->mask_buf_def);
 	kfree(d->mask_buf);
+	kfree(d->main_status_buf);
 	kfree(d->status_buf);
 	kfree(d->status_reg_buf);
 	if (d->config_buf) {
@@ -981,6 +982,7 @@ void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *d)
 	kfree(d->wake_buf);
 	kfree(d->mask_buf_def);
 	kfree(d->mask_buf);
+	kfree(d->main_status_buf);
 	kfree(d->status_reg_buf);
 	kfree(d->status_buf);
 	if (d->config_buf) {
-- 
2.25.1