From: Zijun Hu Date: Tue, 14 Jan 2025 15:23:04 +0000 (+0800) Subject: of: reserved-memory: Warn for missing static reserved memory regions X-Git-Tag: v6.14-rc1~100^2~5 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=81dfedd5234b42df11a473eefe7328ea4a0416ad;p=thirdparty%2Fkernel%2Flinux.git of: reserved-memory: Warn for missing static reserved memory regions 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 Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20250114-of_core_fix-v5-2-b8bafd00a86f@quicinc.com Signed-off-by: Rob Herring (Arm) --- diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 17c57118c4960..75e819f66a561 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);