powerpc/book3s64/hash: Drop WARN_ON in hash__remove_section_mapping()

The single caller (arch_remove_linear_mapping()) prints a proper
warning when this function fails. No need to eventually crash the
kernel - let's drop this WARN_ON.

Suggested-by: Oscar Salvador <osalvador@suse.de>
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201111145322.15793-7-david@redhat.com

diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c
index 24702c0a92e0f365cb9f9e9c2cd99ea4a1df2d94..d2dcb7757c685f50358178c3e9479b82887cb747 100644 (file)
--- a/arch/powerpc/mm/book3s64/hash_utils.c
+++ b/arch/powerpc/mm/book3s64/hash_utils.c
@@ -845,7 +845,6 @@ int hash__remove_section_mapping(unsigned long start, unsigned long end)
 {
        int rc = htab_remove_mapping(start, end, mmu_linear_psize,
                                     mmu_kernel_ssize);
-       WARN_ON(rc < 0);
 
        if (resize_hpt_for_hotplug(memblock_phys_mem_size()) == -ENOSPC)
                pr_warn("Hash collision while resizing HPT\n");