Re: [PATCH 21/47] New version of CRISv32 I2C driver.

[Andrew Morton]

On Fri, 30 Nov 2007 15:54:01 +0100 Jesper Nilsson <jesper.nilsson@xxxxxxxx> wrote:

> +int
> +i2c_write(unsigned char theSlave, void *data, size_t nbytes)
> +{
> +	int error, cntr = 3;
> +	unsigned char bytes_wrote = 0;
> +	unsigned char value;
> +	unsigned long flags;
> +
> +	spin_lock(&i2c_lock);
> +
> +	do {
> +		error = 0;
> +		/*
> +		 * we don't like to be interrupted
> +		 */
> +		local_irq_save(flags);
> +
> +		i2c_start();
> +		/*

Well if you _are_ interrupted prior to the local_irq_save() you'll deadlock
on i2c_lock?

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