[PATCH stable 4.9 1/2] Revert "of/fdt: Make sure no-map does not remove already reserved regions"
From: Quentin Perret <hidden>
Date: 2021-05-12 12:30:43
Subsystem:
open firmware and flattened device tree, the rest · Maintainers:
Rob Herring, Saravana Kannan, Linus Torvalds
This reverts commit 666ae7c255f9eb7a8fd8e55641542f3624a78b43. It is not really a fix, and the backport misses dependencies, which breaks existing platforms. Reported-by: Alexandre TORGUE <alexandre.torgue@foss.st.com> Signed-off-by: Quentin Perret <redacted> --- drivers/of/fdt.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-)
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 9054b8f218a7..f90b626269ab 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c@@ -1158,16 +1158,8 @@ void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size) int __init __weak early_init_dt_reserve_memory_arch(phys_addr_t base, phys_addr_t size, bool nomap) { - if (nomap) { - /* - * If the memory is already reserved (by another region), we - * should not allow it to be marked nomap. - */ - if (memblock_is_region_reserved(base, size)) - return -EBUSY; - + if (nomap) return memblock_mark_nomap(base, size); - } return memblock_reserve(base, size); }
--
2.31.1.607.g51e8a6a459-goog