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Date: Fri, 28 Mar 2008 12:19:25 -0500
From: Scott Wood <scottwood@freescale.com>
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To: York Sun <yorksun@freescale.com>
Subject: Re: [PATCH 2/2 v4] Add DIU platform code for MPC8610HPCD
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Cc: linux-fbdev-devel@lists.sourceforge.net, a.p.zijlstra@chello.nl,
	linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org,
	akpm@linux-foundation.org, Timur Tabi <timur@freescale.com>
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York Sun wrote:
> +	np = of_find_compatible_node(NULL, NULL, "fsl,fpga-pixis");
> +	if (np) {
> +		of_address_to_resource(np, 0, &r);
> +		of_node_put(np);
> +		pixis_bdcfg0 = ioremap(r.start + 0x00000008, sizeof(u8));
> +		if (!pixis_bdcfg0) {
> +			printk(KERN_ERR "Err: can't map FPGA cfg register!\n");
> +			return;
> +		}
> +		pixis_arch = ioremap(r.start + 0x00000001, sizeof(u8));
> +		if (!pixis_arch) {
> +			printk(KERN_ERR "Err: can't map FPGA arch register!\n");
> +			return;
> +		}

Just of_iomap() the whole resource, rather than doing it a byte at a time.

> +int __init preallocate_diu_videomemory(void)
> +{
> +	pr_debug("diu_size=%lu\n", diu_ops.diu_size);
> +
> +	diu_ops.diu_mem = __alloc_bootmem(diu_ops.diu_size, 8, 0);
> +	if (!diu_ops.diu_mem) {
> +		printk(KERN_ERR "fsl-diu: cannot allocate %lu bytes\n",
> +			diu_ops.diu_size);
> +		return -ENOMEM;
> +	}
> +
> +	printk(KERN_INFO "%s: diu_mem=%p\n", __func__, diu_ops.diu_mem);

The pr_debug line is more useful information than the KERN_INFO line...

-Scott