tree f01d73c72b38ea5bd27ff5deda3bfb311571f923
parent cd7c951787c1cea67da9412179b647b2d63b9840
author Patrick Delaunay <patrick.delaunay@st.com> 1599668914 +0200
committer Patrick Delaunay <patrick.delaunay@st.com> 1601643914 +0200

gpio: stm32: check result of ofnode_phandle_args

Add test on the size of ofnode_phandle_args result to avoid access
to uninitialized elements in args[] field.

This patch avoids the issue when gpio-ranges cell size is not 3 as
expected, for example:
	gpio-ranges = <&pinctrl 0>;
instead of
	gpio-ranges = <&pinctrl 0 112 16>;

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>