Re: [PATCH] include old-style rb532 CompactFlash support

[Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>]

On Wednesday 29 October 2008, Phil Sutter wrote:
> I copied the driver from the OpenWrt project to FreeWRT at Thu, 16 Nov
> 2006 and since then maintain it. As the current kernel for rb532 in
> FreeWRT is 2.6.19.1, intense testing has only been done basing on the
> local patches for the board support. After porting it to the linux-mips
> git tree, I could verify the functionality by mounting an ext2
> filesystem on the disk and reading/writing files in it.

Hmm, I thought that the old driver is an IDE driver not a stand-alone one
so I'm not much in favor of merging it as it is.  However it still should
be useful in figuring out why pata_rb532_cf doesn't work correctly.

> +static irqreturn_t cf_irq_handler(int irq, void *dev_id)
> +{
> +	/* While tasklet has not disabled irq, irq will be retried all the time
> +	 * because of ILEVEL matching GPIO pin status => deadlock.
> +	 * To avoid this, we change ILEVEL to 0.
> +	 */
> +	struct cf_mips_dev *dev = dev_id;
> +
> +	rb532_gpio_set_ilevel(0, dev->pin);
> +	rb532_gpio_set_istat(0, dev->pin);

I cannot find the corresponding functionality in the new driver or arch code?

[ It seems that ->set_int_{level,status} methods from arch/mips/rb532/gpio.c
  are not used anywhere in the kernel? ]