From: Zijun Hu quic_zijuhu@quicinc.com
For child node of /reserved-memory, its property 'reg' may contain multiple regions, but fdt_scan_reserved_mem_reg_nodes() only takes into account the first region, and miss remaining regions.
But there are no simple approach to fix it, so give user warning message when miss remaining regions.
Fixes: 8a6e02d0c00e ("of: reserved_mem: Restructure how the reserved memory regions are processed") Cc: stable@vger.kernel.org Signed-off-by: Zijun Hu quic_zijuhu@quicinc.com --- drivers/of/of_reserved_mem.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 17c57118c4960d8ac502add1904f7f464258f5a1..75e819f66a56139a800dba5e2e0044d0bbeb065e 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -263,6 +263,11 @@ void __init fdt_scan_reserved_mem_reg_nodes(void) uname); continue; } + + if (len > t_len) + pr_warn("%s() ignores %d regions in node '%s'\n", + __func__, len / t_len - 1, uname); + base = dt_mem_next_cell(dt_root_addr_cells, &prop); size = dt_mem_next_cell(dt_root_size_cells, &prop);