linux-kernel - [PATCH 1/3] usb: phy: ab8500-usb: check regulator

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: <1364997747-20830-2-git-send-email-fabio.baltieri@linaro.org>
Date:	Wed,  3 Apr 2013 16:02:25 +0200
From:	Fabio Baltieri <fabio.baltieri@...aro.org>
To:	Felipe Balbi <balbi@...com>
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	Fabio Baltieri <fabio.baltieri@...aro.org>,
	Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH 1/3] usb: phy: ab8500-usb: check regulator_enable return value

Since regulator_enable() is going to be marked as __must_check in the
next merge window, always check regulator_enable() return value and
print a warning if it fails.

Cc: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@...aro.org>
---
 drivers/usb/phy/phy-ab8500-usb.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c
index b8115b0..ac27ed2 100644
--- a/drivers/usb/phy/phy-ab8500-usb.c
+++ b/drivers/usb/phy/phy-ab8500-usb.c
@@ -170,7 +170,9 @@ static void ab8500_usb_regulator_enable(struct ab8500_usb *ab)
 {
 	int ret, volt;
 
-	regulator_enable(ab->v_ape);
+	ret = regulator_enable(ab->v_ape);
+	if (ret)
+		dev_err(ab->dev, "Failed to enable v-ape\n");
 
 	if (!is_ab8500_2p0_or_earlier(ab->ab8500)) {
 		ab->saved_v_ulpi = regulator_get_voltage(ab->v_ulpi);
@@ -188,7 +190,9 @@ static void ab8500_usb_regulator_enable(struct ab8500_usb *ab)
 					ret);
 	}
 
-	regulator_enable(ab->v_ulpi);
+	ret = regulator_enable(ab->v_ulpi);
+	if (ret)
+		dev_err(ab->dev, "Failed to enable vddulpivio18\n");
 
 	if (!is_ab8500_2p0_or_earlier(ab->ab8500)) {
 		volt = regulator_get_voltage(ab->v_ulpi);
@@ -197,7 +201,9 @@ static void ab8500_usb_regulator_enable(struct ab8500_usb *ab)
 					volt);
 	}
 
-	regulator_enable(ab->v_musb);
+	ret = regulator_enable(ab->v_musb);
+	if (ret)
+		dev_err(ab->dev, "Failed to enable musb_1v8\n");
 }
 
 static void ab8500_usb_regulator_disable(struct ab8500_usb *ab)
-- 
1.8.1.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/