From: segooon@gmail.com (Kulikov Vasiliy)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 01/10 v2] arm: leds: check return value of request_region()
Date: Thu, 29 Jul 2010 14:44:26 +0400 [thread overview]
Message-ID: <1280400267-4659-1-git-send-email-segooon@gmail.com> (raw)
request_region() may fail, if so return -EBUSY.
Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
---
arch/arm/mach-shark/leds.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-shark/leds.c b/arch/arm/mach-shark/leds.c
index c9e32de..cb1a8f2 100644
--- a/arch/arm/mach-shark/leds.c
+++ b/arch/arm/mach-shark/leds.c
@@ -155,7 +155,8 @@ static int __init leds_init(void)
leds_event = sequoia_leds_event;
/* Make LEDs independent of power-state */
- request_region(0x24,4,"sequoia");
+ if (request_region(0x24, 4, "sequoia") == NULL)
+ return -EBUSY;
temp = sequoia_read(0x09);
temp |= 1<<10;
sequoia_write(temp,0x09);
--
1.7.0.4
reply other threads:[~2010-07-29 10:44 UTC|newest]
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