fix-mmc-busy-loop-on-bytes.patch

christer-mmc-byte-alignment.patch reduced the FIFO I/O granularity
from words to bytes. This also includes the decision when the FIFO
is empty or full.

However, we sometimes only want to transfer full words, in which
case do_pio_read/do_pio_write busy-loop until the FIFO has filled
up or drained enough.

In the case of do_pio_write, this can cause an endless loop if the
amount of data exceeds the FIFO size, because do_pio_write runs
before the transfer is initiated, so the FIFO never drains.

Signed-off-by: Werner Almesberger <werner@openmoko.org>

0 files changed, 0 insertions, 0 deletions