[PATCHv3 4/5] mtd: mxc_nand fixups

[Ivo Clarysse]

On Wed, Jun 23, 2010 at 10:48 AM, John Ogness <john.ogness at linutronix.de> wrote:
[...]
>
> OK. Now I understand the problem. Here is a new patch that introduces a
> flag that is set by the interrupt handler. This way we do not rely on
> the i.MX21 being able to read NFC_INT when the interrupt is masked.

Yes, this works on i.MX21 (tested on an MX21ADS board).

[...]
> @@ -117,6 +118,7 @@ struct mxc_nand_host {
>        int                     clk_act;
>        int                     irq;
>
> +       int                     nfc_int;

But is it OK to use a regular (non-volatile) variable to communicate
between interrupt context and the non-interrupt context ?

My original patch for i.MX21 used completions instead:

http://lists.infradead.org/pipermail/linux-arm-kernel/2010-April/012694.html