tree e7e90dec7e5d20a362de132313b8e7c1c653e7cc
parent 86a6a8749d5b8fd5c2b544fe9fd11101e3d0550f
author Yauhen Kharuzhy <jekhor@gmail.com> 1234387552 -0800
committer Pierre Ossman <drzeus@drzeus.cx> 1234986964 +0100

s3cmci: Fix hangup in do_pio_write()

This commit fixes the regression what was added by commit
088a78af978d0c8e339071a9b2bca1f4cb368f30 "s3cmci: Support transfers
which are not multiple of 32 bits."

fifo_free() now returns amount of available space in FIFO buffer in
bytes.  But do_pio_write() writes to FIFO 32-bit words.  Condition for
return from cycle is (fifo_free() == 0), but when fifo has 1..3 bytes
of free space then this condition will never be true and system hangs.

This patch changes condition in the while() to (fifo_free() > 3).

Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>