Re: [RFC] MMC: error handling improvements

David Brown
2011-02-15T23:49:05Z

On Tue, Feb 15 2011, Russell King - ARM Linux wrote:

> This patch is for RFC only; it needs splitting up somewhat. However, I
> wanted to get it out there for some comment.

Just for kicks, I applied this and ran it on an MSM target (8x50). It
seems to cause lots of:

mmc0: Data timeout
mmc0: Controller has been re-initialized
...
mmc0: Data CRC error

and I can post more if you would find them interesting. Eventually the
MSM mmc driver derefernces a null pointer in the interrupt code.

It's also possible this is finding problems in our SDCC driver.

David

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