[PATCH] nand_wait : warn if the nand is busy on exit

[Artem Bityutskiy]

On Mon, 2012-11-05 at 15:00 +0100, Matthieu CASTET wrote:
> This patch allow to detect buggy driver/hardware with
> bad RnB (dev_ready) management or when timeout occurs in polling mode.
> 
> This works when dev_ready is set or not set.
> There are 2 methods to wait for an erase/program command completion:
> 
> 1. Wait until nand RnB pin goes high (that's what chip->dev_ready usually does)
> 2. Poll the device: send a status (0x70) command and read status byte in a loop
>    until bit NAND_STATUS_READY is set
> 
> In all cases, you should send a status command after completion, to check if
> the operation was successful. And if the operation completed, the status should
> have bit NAND_STATUS_READY set.
> 
> Signed-off-by: Matthieu CASTET <matthieu.castet at parrot.com>
> CC: Ivan Djelic <ivan.djelic at parrot.com>

Pushed to l2-mtd.git, thanks!

-- 
Best Regards,
Artem Bityutskiy
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