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libfdt: fdt_node_offset_by_phandle(): Fix comparison warning

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With -Wsign-compare, compilers warn about a mismatching signedness
in a comparison in fdt_node_offset_by_phandle().

Uses a better suited bitwise NOT operator to denote the special value of
-1, which automatically results in an unsigned type.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Message-Id: <20200921165303.9115-14-andre.przywara@arm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Andre Przywara 2020-09-21 17:53:02 +01:00 committed by David Gibson
parent 07158f4cf2
commit 10f682788c
1 changed files with 1 additions and 1 deletions
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libfdt/fdt_ro.c
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@ -680,7 +680,7 @@ int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle)
{ {
int offset; int offset;
if ((phandle == 0) || (phandle == -1)) if ((phandle == 0) || (phandle == ~0U))
return -FDT_ERR_BADPHANDLE; return -FDT_ERR_BADPHANDLE;
FDT_RO_PROBE(fdt); FDT_RO_PROBE(fdt);