tree 2b5ee52240aea7b4afecf6fcffce1e5280d41cd4
parent 6c2d6631a4a714a4ab0ab4e250a1e355e63c3e6b
author Juan Castillo <juan.castillo@arm.com> 1456247538 +0000
committer Juan Castillo <juan.castillo@arm.com> 1456308311 +0000

Fix potential deadlock in PL011 init function

The PL011 initialization function disables the UART, flushes the FIFO
and waits for the current character to be transmitted before applying
the configuration and enabling the UART. This waiting might result in
a deadlock if the FIFO is disabled while another CPU is printing a
message since the flush of FIFO will never finish.

This patch fixes the problem by removing the flush operation and the
loop for last character completion from the initialization function.
The UART is disabled, configured and enabled again.

Change-Id: I1ca0b6bd9f352c12856f10f174a9f6eaca3ab4ea