tmakin/ack-tegra
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

of: reserved-memory: Warn for missing static reserved memory regions

Browse Source 
commit 81dfedd5234b42df11a473eefe7328ea4a0416ad upstream.

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>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20250114-of_core_fix-v5-2-b8bafd00a86f@quicinc.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Zijun Hu
2025-01-14 23:23:04 +08:00
committed by Greg Kroah-Hartman
parent a6848636d8
commit 8de4e5a922
1 changed files with 5 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/of/of_reserved_mem.c
View File

@@ -214,6 +214,11 @@ 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);