static int overlay_fixup_one_phandle()

in EmbeddedPkg/Library/FdtLib/fdt_overlay.c [412:451]

• 34 lines of code
• 7 McCabe index (conditional complexity)

static int overlay_fixup_one_phandle(void *fdt, void *fdto,
				     int symbols_off,
				     const char *path, uint32_t path_len,
				     const char *name, uint32_t name_len,
				     int poffset, const char *label)
{
	const char *symbol_path;
	uint32_t phandle;
	fdt32_t phandle_prop;
	int symbol_off, fixup_off;
	int prop_len;

	if (symbols_off < 0)
		return symbols_off;

	symbol_path = fdt_getprop(fdt, symbols_off, label,
				  &prop_len);
	if (!symbol_path)
		return prop_len;

	symbol_off = fdt_path_offset(fdt, symbol_path);
	if (symbol_off < 0)
		return symbol_off;

	phandle = fdt_get_phandle(fdt, symbol_off);
	if (!phandle)
		return -FDT_ERR_NOTFOUND;

	fixup_off = fdt_path_offset_namelen(fdto, path, path_len);
	if (fixup_off == -FDT_ERR_NOTFOUND)
		return -FDT_ERR_BADOVERLAY;
	if (fixup_off < 0)
		return fixup_off;

	phandle_prop = cpu_to_fdt32(phandle);
	return fdt_setprop_inplace_namelen_partial(fdto, fixup_off,
						   name, name_len, poffset,
						   &phandle_prop,
						   sizeof(phandle_prop));
};