linux-kernel - [PATCH] pch_gpio: Fix output value of pch_gpio_direction

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-next>] [day] [month] [year] [list]

Message-Id: <1301487386-29101-1-git-send-email-tomoya-linux@dsn.okisemi.com>
Date:	Wed, 30 Mar 2011 21:16:26 +0900
From:	Tomoya MORINAGA <tomoya-linux@....okisemi.com>
To:	linux-kernel@...r.kernel.org
Cc:	qi.wang@...el.com, yong.y.wang@...el.com, joel.clark@...el.com,
	kok.howg.ewe@...el.com, Peter Tyser <ptyser@...-inc.com>,
	toshiharu-linux@....okisemi.com,
	Tomoya MORINAGA <tomoya-linux@....okisemi.com>
Subject: [PATCH] pch_gpio: Fix output value of pch_gpio_direction_output()

The pch_gpio_direction_output() function was missing a write to set the
desired output value.  The function would properly set the GPIO
direction, but not the output value.  The value would have to manually
be set with a follow up call to pch_gpio_set().

Add the missing write so that pch_gpio_direction_output() sets both the
GPIO direction and value.

Reported-by: Peter Tyser <ptyser@...-inc.com>
Signed-off-by: Tomoya MORINAGA <tomoya-linux@....okisemi.com>
---
 drivers/gpio/pch_gpio.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/gpio/pch_gpio.c b/drivers/gpio/pch_gpio.c
index 0eba0a7..b4e9915 100644
--- a/drivers/gpio/pch_gpio.c
+++ b/drivers/gpio/pch_gpio.c
@@ -105,6 +105,7 @@ static int pch_gpio_direction_output(struct gpio_chip *gpio, unsigned nr,
 		reg_val |= (1 << nr);
 	else
 		reg_val &= ~(1 << nr);
+	iowrite32(reg_val, &chip->reg->po);
 
 	mutex_unlock(&chip->lock);
 
-- 
1.7.4

--
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/