linux-kernel - [PATCH] PNP: add put_device() in pnpbios

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Message-Id: <20251218081955.548521-1-lihaoxiang@isrc.iscas.ac.cn>
Date: Thu, 18 Dec 2025 16:19:55 +0800
From: Haoxiang Li <lihaoxiang@...c.iscas.ac.cn>
To: rafael@...nel.org,
	lihaoxiang@...c.iscas.ac.cn
Cc: linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: [PATCH] PNP: add put_device() in pnpbios_init()

If pnp_register_protocol() fails, call put_device()
to drop the device reference.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@...r.kernel.org
Signed-off-by: Haoxiang Li <lihaoxiang@...c.iscas.ac.cn>
---
 drivers/pnp/pnpbios/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pnp/pnpbios/core.c b/drivers/pnp/pnpbios/core.c
index f7e86ae9f72f..997e0153d6e3 100644
--- a/drivers/pnp/pnpbios/core.c
+++ b/drivers/pnp/pnpbios/core.c
@@ -538,6 +538,7 @@ static int __init pnpbios_init(void)
 	/* register with the pnp layer */
 	ret = pnp_register_protocol(&pnpbios_protocol);
 	if (ret) {
+		put_device(&pnpbios_protocol.dev)
 		printk(KERN_ERR
 		       "PnPBIOS: Unable to register driver.  Aborting.\n");
 		return ret;
-- 
2.25.1