linux-kernel - [PATCH] regulator: core: Still free GPIOs using gpio

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 for Android: free password hash cracker in your pocket

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

Message-Id: <1404215726-2480-1-git-send-email-broonie@kernel.org>
Date:	Tue,  1 Jul 2014 12:55:26 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Liam Girdwood <lgirdwood@...il.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Russell King <rmk+kernel@....linux.org.uk>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linaro-kernel@...ts.linaro.org,
	Alexandre Courbot <gnurou@...il.com>,
	Mark Brown <broonie@...aro.org>
Subject: [PATCH] regulator: core: Still free GPIOs using gpio_free()

From: Mark Brown <broonie@...aro.org>

Even though we mostly use GPIO descriptors internally we still use
gpio_request_one() to request so we need to pair that with gpio_free() to
release the GPIO.

Reported-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Mark Brown <broonie@...aro.org>
---
 drivers/regulator/core.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index c563d93125cd..80381409f856 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1710,7 +1710,12 @@ static void regulator_ena_gpio_free(struct regulator_dev *rdev)
 		if (pin->gpiod == rdev->ena_pin->gpiod) {
 			if (pin->request_count <= 1) {
 				pin->request_count = 0;
-				gpiod_put(pin->gpiod);
+				/*
+				 * Since we requested with gpio_request_one()
+				 * we still need to free with gpio_free()
+				 * for now.
+				 */
+				gpio_free(desc_to_gpio(pin->gpiod));
 				list_del(&pin->list);
 				kfree(pin);
 			} else {
-- 
2.0.0

--
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/