linux-kernel - [PATCH 6/6] soc: rockchip: power-domain: check the existing of regmap

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: <1455507237-13161-1-git-send-email-shawn.lin@rock-chips.com>
Date:	Mon, 15 Feb 2016 11:33:57 +0800
From:	Shawn Lin <shawn.lin@...k-chips.com>
To:	Heiko Stuebner <heiko@...ech.de>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...eaurora.org>
Cc:	linux-clk@...r.kernel.org, linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org, Shawn Lin <shawn.lin@...k-chips.com>
Subject: [PATCH 6/6] soc: rockchip: power-domain: check the existing of regmap

Check return value of syscon_node_to_regmap for
rockchip_pm_domain_probe. If err value is returned, probe
procedure should abort.

Signed-off-by: Shawn Lin <shawn.lin@...k-chips.com>
---

 drivers/soc/rockchip/pm_domains.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/soc/rockchip/pm_domains.c b/drivers/soc/rockchip/pm_domains.c
index 534c589..3c4a44d 100644
--- a/drivers/soc/rockchip/pm_domains.c
+++ b/drivers/soc/rockchip/pm_domains.c
@@ -402,6 +402,10 @@ static int rockchip_pm_domain_probe(struct platform_device *pdev)
 	}
 
 	pmu->regmap = syscon_node_to_regmap(parent->of_node);
+	if (IS_ERR(pmu->regmap)) {
+		dev_err(dev, "no regmap available\n");
+		return -ENODEV;
+	}
 
 	/*
 	 * Configure power up and down transition delays for CORE
-- 
2.3.7