linux-kernel - [PATCH AUTOSEL 4.19 118/206] thermal: rcar_thermal: Handle probe error gracefully

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200918020802.2065198-118-sashal@kernel.org>
Date:   Thu, 17 Sep 2020 22:06:34 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Niklas Söderlund 
        <niklas.soderlund+renesas@...natech.se>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Sasha Levin <sashal@...nel.org>, linux-pm@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 118/206] thermal: rcar_thermal: Handle probe error gracefully

From: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>

[ Upstream commit 39056e8a989ef52486e063e34b4822b341e47b0e ]

If the common register memory resource is not available the driver needs
to fail gracefully to disable PM. Instead of returning the error
directly store it in ret and use the already existing error path.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
Link: https://lore.kernel.org/r/20200310114709.1483860-1-niklas.soderlund+renesas@ragnatech.se
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/thermal/rcar_thermal.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index 4dc30e7890f6c..140386d7c75a3 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -505,8 +505,10 @@ static int rcar_thermal_probe(struct platform_device *pdev)
 			res = platform_get_resource(pdev, IORESOURCE_MEM,
 						    mres++);
 			common->base = devm_ioremap_resource(dev, res);
-			if (IS_ERR(common->base))
-				return PTR_ERR(common->base);
+			if (IS_ERR(common->base)) {
+				ret = PTR_ERR(common->base);
+				goto error_unregister;
+			}
 
 			idle = 0; /* polling delay is not needed */
 		}
-- 
2.25.1