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mm: ioremap: remove unneeded ioremap_allowed and iounmap_allowed

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

Link: https://lkml.kernel.org/r/20230706154520.11257-20-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Brian Cain <bcain@quicinc.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Chris Zankel <chris@zankel.net>
Cc: David Laight <David.Laight@ACULAB.COM>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Niklas Schnelle <schnelle@linux.ibm.com>
Cc: Rich Felker <dalias@libc.org>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Baoquan He 2023-07-06 23:45:20 +08:00 committed by Andrew Morton
parent 8f03d74f71
commit 95da27c4c6
2 changed files with 0 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
include/asm-generic/io.h
View File

@ -1047,32 +1047,6 @@ static inline void iounmap(volatile void __iomem *addr)
#elif defined(CONFIG_GENERIC_IOREMAP) #elif defined(CONFIG_GENERIC_IOREMAP)
#include <linux/pgtable.h> #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, void __iomem *generic_ioremap_prot(phys_addr_t phys_addr, size_t size,
pgprot_t prot); pgprot_t prot);

6
mm/ioremap.c
View File

@ -33,9 +33,6 @@ void __iomem *generic_ioremap_prot(phys_addr_t phys_addr, size_t size,
phys_addr -= offset; phys_addr -= offset;
size = PAGE_ALIGN(size + offset); size = PAGE_ALIGN(size + offset);
if (!ioremap_allowed(phys_addr, size, pgprot_val(prot)))
return NULL;
area = __get_vm_area_caller(size, VM_IOREMAP, IOREMAP_START, area = __get_vm_area_caller(size, VM_IOREMAP, IOREMAP_START,
IOREMAP_END, __builtin_return_address(0)); IOREMAP_END, __builtin_return_address(0));
if (!area) if (!area)
@ -64,9 +61,6 @@ void generic_iounmap(volatile void __iomem *addr)
{ {
void *vaddr = (void *)((unsigned long)addr & PAGE_MASK); void *vaddr = (void *)((unsigned long)addr & PAGE_MASK);
if (!iounmap_allowed(vaddr))
return;
if (is_ioremap_addr(vaddr)) if (is_ioremap_addr(vaddr))
vunmap(vaddr); vunmap(vaddr);
} }