tree 0bc8f857acfb7c47ab4c7231ffab5c8628b714c3
parent c6573c94670882079174e2ea0da4abf1a0da51fe
author Pierre Ossman <drzeus@drzeus.cx> 1196621531 +0100
committer Pierre Ossman <drzeus@drzeus.cx> 1197486060 +0100

sdhci: use PIO when DMA can't satisfy the request

Some controllers have been designed on the assumption that all transfers
will be 32-bit aligned, both in start address and in size. This is not a
guarantee the SDHCI specification provides and not one we can provide.

Revert back to PIO for individual requests in order to work around the
hardware bug.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>