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Revert "of/fdt: Make sure no-map does not remove already reserved regions"

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This reverts commit 3cbd3038c9155038020560729cde50588311105d.
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 <qperret@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Quentin Perret 2021-05-12 12:28:52 +00:00 committed by Greg Kroah-Hartman
parent 3fe9ee040f
commit 66b8853dfa
1 changed files with 1 additions and 9 deletions
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10
drivers/of/fdt.c
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@ -1153,16 +1153,8 @@ int __init __weak early_init_dt_mark_hotplug_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);
}