tree 3635d1f0f333229ba6fbaa87281f7e2e86777a66
parent 4e4b3fbe1ce27ee2aa2351792abc26032043b4fb
author Jeroen Hofstee <jeroen@myspectrum.nl> 1402521148 +0200
committer Tom Warren <twarren@nvidia.com> 1403194685 -0700

tegra20: display: fix checking of return value

The calling code seems a bit in doubt about the return
value of fdtdec_lookup_phandle. Since it returns a negative
value on error (and fdt_node_offset_by_phandle as well),
check for that.

cc: Wei Ni <wni@nvidia.com>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>