On Tue, May 05, 2009 at 03:47:00PM +0300, Hiroshi DOYU wrote:
> +static struct resource omap3_iommu_res[] = {
> + { /* Camera ISP MMU */
> + .start = OMAP3_MMU1_BASE,
> + .end = OMAP3_MMU1_BASE + MMU_REG_SIZE - 1,
> + .flags = IORESOURCE_MEM,
> + },
> + {
> + .start = OMAP3_MMU1_IRQ,
> + .flags = IORESOURCE_IRQ,
> + },
> + { /* IVA2.2 MMU */
> + .start = OMAP3_MMU2_BASE,
> + .end = OMAP3_MMU2_BASE + MMU_REG_SIZE - 1,
> + .flags = IORESOURCE_MEM,
> + },
> + {
> + .start = OMAP3_MMU2_IRQ,
> + .flags = IORESOURCE_IRQ,
> + },
> +};
> +#define NR_IOMMU_RES (ARRAY_SIZE(omap3_iommu_res) / 2)
This looks all very convoluted. Why not do something like:
static unsigned long iommu_base[] = {
OMAP3_MMU1_BASE,
OMAP3_MMU2_BASE,
};
static int iommu_irq[] = {
OMAP3_MMU1_IRQ,
OMAP3_MMU2_IRQ,
};
> +static struct platform_device *omap3_iommu_pdev[NR_IOMMU_DEVICES];
> +
> +static int __init omap3_iommu_init(void)
> +{
> + int i, err;
> +
> + for (i = 0; i < NR_IOMMU_DEVICES; i++) {
> + struct platform_device *pdev;
> +
> + pdev = platform_device_alloc("omap-iommu", i + 1);
Why number them 1 and up when zero is perfectly fine?
> + if (!pdev) {
> + err = -ENOMEM;
> + goto err_out;
> + }
> + err = platform_device_add_resources(pdev,
> + &omap3_iommu_res[2 * i], NR_IOMMU_RES);
struct resource res[2];
res[0].start = iommu_base[i];
res[0].end = iommu_base[i] + MMU_REG_SIZE - 1;
res[0].flags = IORESOURCE_MEM;
res[1].start = res[1].end = iommu_irq[i];
res[1].flags = IORESOURCE_IRQ;
err = platform_device_add_resources(pdev, &res,
ARRAY_SIZE(res));
There's no need to keep 'res' around since it's copied by add_resources.
> + if (err)
> + goto err_out;
> + err = platform_device_add_data(pdev, &omap3_iommu_pdata[i],
> + sizeof(omap3_iommu_pdata[0]));
> + if (err)
> + goto err_out;
> + err = platform_device_add(pdev);
> + if (err)
> + goto err_out;
> + omap3_iommu_pdev[i] = pdev;
> + }
> + return 0;
> +
> +err_out:
> + while (i--)
> + platform_device_put(omap3_iommu_pdev[i]);
> + return err;
> +}
> +module_init(omap3_iommu_init);
> +
> +static void __exit omap3_iommu_exit(void)
> +{
> + int i;
> +
> + for (i = 0; i < NR_IOMMU_DEVICES; i++)
> + platform_device_unregister(omap3_iommu_pdev[i]);
> +}
> +module_exit(omap3_iommu_exit);
> +
> +MODULE_AUTHOR("Hiroshi DOYU");
> +MODULE_DESCRIPTION("omap iommu: omap3 device registration");
> +MODULE_LICENSE("GPL v2");
>
>
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