ARM: ep93xx: Fix wait for UART FIFO to be empty
authorH Hartley Sweeten <hartleys@visionengravers.com>
Sat, 16 Mar 2013 00:16:52 +0000 (19:16 -0500)
committerRyan Mallon <rmallon@gmail.com>
Sun, 17 Mar 2013 22:40:38 +0000 (09:40 +1100)
commit605c357bb40ce412c086f3a928d07c1d4349b95b
tree8abc56dbea1bf45a1dda949b9bcb650b56255db7
parent6dbe51c251a327e012439c4772097a13df43c5b8
ARM: ep93xx: Fix wait for UART FIFO to be empty

Commit 210dce5f "ARM: ep93xx: properly wait for UART FIFO to be empty"

Removed the timeout loop while waiting for the uart transmit fifo to
empty. Some bootloaders leave the uart in a state where there might
be bytes in the uart that are not transmitted when execution is handed
over to the kernel. This results in a deadlocked system while waiting
for the fifo to empty.

Add back the timeout wait to prevent the deadlock.

Increase the wait time to hopefully prevent the decompressor corruption
that lead to commit 210dce5f. This corruption was probably due to a
slow uart baudrate. The 10* increase in the wait time should be enough
for all cases.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ryan Mallon <rmallon@gmail.com>
arch/arm/mach-ep93xx/include/mach/uncompress.h