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Date: Sat, 03 Jul 2010 19:20:28 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-help] kernel warnings and oopses calling gpiolib
 functions from xenomai kernel space
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To: Jeremy Brown <jhbrown@domain.hid>
Cc: xenomai-help <xenomai@xenomai.org>

Gilles Chanteperdrix wrote:
> Jeremy Brown wrote:
>> Thanks in advance for any and all help!
> 
> Hi,
> 
> from your post, we can conclude that gpio_set_value is a Linux kernel
> function which can yet not be used in Xenomai context (you could
> probably even get more explicit messages by enabling I-pipe debugging).
> I am going to try and propose a fix for this issue, will send you a
> patch ASAP.
> 
> Note that the issue is more an Adeos I-pipe issue than a Xenomai issue,
> so I am more interested in knowing what version of adeos than what
> version of Xenomai you are using. But chances that the problem exists
> with all versions anyway.

Could you try the following patch?

diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index 589a4bb..f1d85ff 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -195,7 +195,7 @@ struct gpio_bank {
 #endif
 	u32 level_mask;
 	u32 toggle_mask;
-	spinlock_t lock;
+	ipipe_spinlock_t lock;
 	struct gpio_chip chip;
 	struct clk *dbck;
 	u32 mod_usage;

-- 
					    Gilles.