On 12/22/2015 02:18 AM, Finn Thain wrote:
From: Ondrej Zary <[email protected]>
Pseudo-DMA (PDMA) has been broken for ages, resulting in hangs on
53C400-based cards.
According to 53C400 datasheet, PDMA transfer length must be a multiple
of 128. Check if that's true and use PIO if it's not.
This makes PDMA work on 53C400 (Canon FG2-5202).
Signed-off-by: Ondrej Zary <[email protected]>
Signed-off-by: Finn Thain <[email protected]>
Reviewed-by: Hannes Reinecke <[email protected]>
Cheers,
Hannes
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SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
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