On Mon, May 15, 2023 at 05:08:35PM +0800, Baoquan He wrote: > From: Christophe Leroy <christophe.leroy@xxxxxxxxxx> > > Define a generic version of ioremap_prot() and iounmap() that > architectures can call after they have performed the necessary > alteration to parameters and/or necessary verifications. > > Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx> > Signed-off-by: Baoquan He <bhe@xxxxxxxxxx> > --- > include/asm-generic/io.h | 4 ++++ > mm/ioremap.c | 22 ++++++++++++++++------ > 2 files changed, 20 insertions(+), 6 deletions(-) > > diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h > index 587e7e9b9a37..a7ca2099ba19 100644 > --- a/include/asm-generic/io.h > +++ b/include/asm-generic/io.h > @@ -1073,9 +1073,13 @@ static inline bool iounmap_allowed(void *addr) > } > #endif > > +void __iomem *generic_ioremap_prot(phys_addr_t phys_addr, size_t size, > + pgprot_t prot); > + Formatting looks a bit weird here. The normal styles are either to indent with two tabs (my preference) or after the opening brace. Otherwise looks good: Reviewed-by: Christoph Hellwig <hch@xxxxxx>