[PATCH] dma: mv_xor: remove minimal offload length threshold

[Maxime Bizon]

On Thu, 2012-12-27 at 20:20 +0100, Lubomir Rintel wrote:
> 
> of memory condition and retries indefinitelly, causing a soft lockup.
> The threshold does not seem to be enforced by hardware (couldn't find
> anything like that in a datasheet)

page 212

Table 63: Descriptor Byte Count Word

3:0 ByteCount

XOR mode: Size of source and destination blocks in bytes.
CRC mode: Size of source block part represented by the descriptor.
DMA mode: Size of source and destination block in bytes.
Minimum blocks' size: 16B.
Maximum blocks' size: 16MB-1

> and things seems to work fine without it. If there's a 

my guess is that it transfers 16B so it seems to work but actually
corrupts data.

maybe we should teach net_dma_find_channel() about that limitation 

-- 
Maxime