linux-kernel - [PATCH 1/2] gpio_keys: add gpio_to

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: <46EFF22A.9010509@artecdesign.ee>
Date:	Tue, 18 Sep 2007 18:43:38 +0300
From:	Anti Sullin <anti.sullin@...ecdesign.ee>
To:	LKML <linux-kernel@...r.kernel.org>
CC:	dtor@...l.ru, akpm@...ux-foundation.org, david-b@...bell.net
Subject: [PATCH 1/2] gpio_keys: add gpio_to_irq return code check

As David Brownell pointed out when reviewing my suspend patch to 
gpio_keys, the original gpio_keys driver does not check gpio_to_irq 
return code.

This patch adds the gpio_to_irq return code check to gpio_keys and 
moves the IRQ edge type setting to request_irq flags to avoid changing 
the irq type before we have confirmed we can use it.

Signed-off-by: Anti Sullin <anti.sullin@...ecdesign.ee> 

---

diff -pur clean/linux-2.6.23-rc5-at91/drivers/input/keyboard/gpio_keys.c linux-2.6.23-rc5-at91/drivers/input/keyboard/gpio_keys.c
--- clean/linux-2.6.23-rc5-at91/drivers/input/keyboard/gpio_keys.c	2007-09-01 09:08:24.000000000 +0300
+++ linux-2.6.23-rc5-at91/drivers/input/keyboard/gpio_keys.c	2007-09-18 16:59:23.000000000 +0300
@@ -77,10 +77,12 @@ static int __devinit gpio_keys_probe(str
 		int irq = gpio_to_irq(button->gpio);
 		unsigned int type = button->type ?: EV_KEY;
 
-		set_irq_type(irq, IRQ_TYPE_EDGE_BOTH);
-		error = request_irq(irq, gpio_keys_isr, IRQF_SAMPLE_RANDOM,
-				     button->desc ? button->desc : "gpio_keys",
-				     pdev);
+		if (irq < 0)
+			goto fail;
+
+		error = request_irq(irq, gpio_keys_isr, 
+				     IRQF_SAMPLE_RANDOM | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+				     button->desc ? button->desc : "gpio_keys", pdev);
 		if (error) {
 			printk(KERN_ERR "gpio-keys: unable to claim irq %d; error %d\n",
 				irq, error);



-- 
Anti Sullin
Embedded Software Engineer
Artec Design LLC
Türi 10C, 11313, Tallinn, Estonia

-
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/