tree 8e0e8935ab39212801cc68c19fe7d28ead5b7e05
parent fdc3dc606dbcd3d9ab93dc0b3cc27a8e303f773d
author Tetsuyuki Kobayashi <koba@kmckk.co.jp> 1353361058 +0000
committer Nobuhiro Iwamatsu <iwamatsu@nigauri.org> 1354255565 +0900

serial: serial_sh: bugfix: autoboot fails if serial console is not connected

On kzm9g board (rmobile SoC), autoboot fails if serial console cable is not
connected.  When serial cable is not connected, serial error occurs and
some garbage comes in data register.
sh_serial_tstc() in serial_sh.c does not check error status and misunderstand
there is some input data.  It is the reason that autoboot fails.
This patch adds checking error status in sh_serial_tstc().

This patch is based on v2013.01-rc1 tag of u-boot master git.

Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>