[PATCH v5 RESEND 17/17] mm: ioremap: remove unneeded ioremap_allowed and iounmap_allowed

Baoquan He
2023-05-15T09:16:05Z

Now there are no users of ioremap_allowed and iounmap_allowed, clean
them up.

Signed-off-by: Baoquan He <bhe@redhat.com>
---
include/asm-generic/io.h | 26 --------------------------
mm/ioremap.c | 6 ------
2 files changed, 32 deletions(-)

diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index 39244c3ee797..bac63e874c7b 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -1047,32 +1047,6 @@ static inline void iounmap(volatile void __iomem *addr)
#elif defined(CONFIG_GENERIC_IOREMAP)
#include <linux/pgtable.h>

-/*
- * Arch code can implement the following two hooks when using GENERIC_IOREMAP
- * ioremap_allowed() return a bool,
- * - true means continue to remap
- * - false means skip remap and return directly
- * iounmap_allowed() return a bool,
- * - true means continue to vunmap
- * - false means skip vunmap and return directly
- */
-#ifndef ioremap_allowed
-#define ioremap_allowed ioremap_allowed
-static inline bool ioremap_allowed(phys_addr_t phys_addr, size_t size,
- unsigned long prot)
-{
- return true;
-}
-#endif
-
-#ifndef iounmap_allowed
-#define iounmap_allowed iounmap_allowed
-static inline bool iounmap_allowed(void *addr)
-{
- return true;
-}
-#endif
-
void __iomem *generic_ioremap_prot(phys_addr_t phys_addr, size_t size,
pgprot_t prot);

diff --git a/mm/ioremap.c b/mm/ioremap.c
index 4a7749d85044..8cb337446bba 100644
--- a/mm/ioremap.c
+++ b/mm/ioremap.c
@@ -32,9 +32,6 @@ void __iomem *generic_ioremap_prot(phys_addr_t phys_addr, size_t size,
phys_addr -= offset;
size = PAGE_ALIGN(size + offset);

- if (!ioremap_allowed(phys_addr, size, pgprot_val(prot)))
- return NULL;
-
#ifdef IOREMAP_START
area = __get_vm_area_caller(size, VM_IOREMAP, IOREMAP_START,
IOREMAP_END, __builtin_return_address(0));
@@ -68,9 +65,6 @@ void generic_iounmap(volatile void __iomem *addr)
{
void *vaddr = (void *)((unsigned long)addr & PAGE_MASK);

- if (!iounmap_allowed(vaddr))
- return;
-
if (is_ioremap_addr(vaddr))
vunmap(vaddr);
}
--
2.34.1