[4/5] riscv: Simplify BUILTIN_DTB device tree mapping handling

Commit Message

Alexandre Ghiti July 23, 2021, 1:01 p.m. UTC

__PAGETABLE_PMD_FOLDED defines a 2-level page table that is only used in
32-bit kernel, so there is no need to check for CONFIG_64BIT in #ifndef
__PAGETABLE_PMD_FOLDED and vice-versa.

Signed-off-by: Alexandre Ghiti <[e-mail]>
---
 arch/riscv/mm/init.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

Patch

diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 6b29c5791555..1b30ad7e3ebc 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -614,18 +614,14 @@  asmlinkage void __init setup_vm(uintptr_t dtb_pa)
 			   pa + PMD_SIZE, PMD_SIZE, PAGE_KERNEL);
 	dtb_early_va = (void *)DTB_EARLY_BASE_VA + (dtb_pa & (PMD_SIZE - 1));
 #else /* CONFIG_BUILTIN_DTB */
-#ifdef CONFIG_64BIT
 	/*
 	 * __va can't be used since it would return a linear mapping address
 	 * whereas dtb_early_va will be used before setup_vm_final installs
 	 * the linear mapping.
 	 */
 	dtb_early_va = kernel_mapping_pa_to_va(XIP_FIXUP(dtb_pa));
-#else
-	dtb_early_va = __va(dtb_pa);
-#endif /* CONFIG_64BIT */
 #endif /* CONFIG_BUILTIN_DTB */
-#else
+#else /* __PAGETABLE_PMD_FOLDED */
 #ifndef CONFIG_BUILTIN_DTB
 	/* Create two consecutive PGD mappings for FDT early scan */
 	pa = dtb_pa & ~(PGDIR_SIZE - 1);
@@ -635,13 +631,9 @@  asmlinkage void __init setup_vm(uintptr_t dtb_pa)
 			   pa + PGDIR_SIZE, PGDIR_SIZE, PAGE_KERNEL);
 	dtb_early_va = (void *)DTB_EARLY_BASE_VA + (dtb_pa & (PGDIR_SIZE - 1));
 #else /* CONFIG_BUILTIN_DTB */
-#ifdef CONFIG_64BIT
-	dtb_early_va = kernel_mapping_pa_to_va(XIP_FIXUP(dtb_pa));
-#else
 	dtb_early_va = __va(dtb_pa);
-#endif /* CONFIG_64BIT */
 #endif /* CONFIG_BUILTIN_DTB */
-#endif
+#endif /* __PAGETABLE_PMD_FOLDED */
 	dtb_early_pa = dtb_pa;
 
 	/*