Currently, many architecutres have't taken the standard GENERIC_IOREMAP way to implement ioremap_prot(), iounmap(), and ioremap_xx(), but make these functions specifically under each arch's folder. Those cause many duplicated codes of ioremap() and iounmap(). In this patchset, firstly adapt the hooks io[re|un]map_allowed, then make use of them to convert those ARCH-es to take GENERIC_IOREMAP method. With these change, duplicated ioremap/iounmap() code uder ARCH-es are removed. This is suggested by Christoph in below discussion: https://lore.kernel.org/all/Yp7h0Jv6vpgt6xdZ@xxxxxxxxxxxxx/T/#u And it's basically further action after arm64 has converted to GENERIC_IOREMAP way in below patchset. [PATCH v5 0/6] arm64: Cleanup ioremap() and support ioremap_prot() https://lore.kernel.org/all/20220607125027.44946-1-wangkefeng.wang@xxxxxxxxxx/T/#u And some change of io[re|un]map_allowed() is borrowed from the v3 of arm64 converting patch. [PATCH v3 4/6] mm: ioremap: Add arch_ioremap/iounmap() https://lore.kernel.org/all/20220519082552.117736-5-wangkefeng.wang@xxxxxxxxxx/T/#u v1->v2: Rename io[re|un]map_allowed() to arch_io[re|un]map() and made some minor changes in patch 1~2 as per Alexander and Kefeng's suggestions. Accordingly, adjust patches~4~11 because of the renaming arch_io[re|un]map(). Testing: It passes the testing on arm64. For other ARCHes, I only tried to pass build with existing RPMs of cross compiling tools. ARCHes like openrisc, parisc, don't build because of lack of cross compiling RPMS. Baoquan He (11): mm/ioremap: change the return value of io[re|un]map_allowed and rename mm: ioremap: fixup the physical address and page prot mm: ioremap: allow ARCH to have its own ioremap definition arc: mm: Convert to GENERIC_IOREMAP hexagon: mm: Convert to GENERIC_IOREMAP ia64: mm: Convert to GENERIC_IOREMAP openrisc: mm: Convert to GENERIC_IOREMAP parisc: mm: Convert to GENERIC_IOREMAP s390: mm: Convert to GENERIC_IOREMAP sh: mm: Convert to GENERIC_IOREMAP xtensa: mm: Convert to GENERIC_IOREMAP arch/arc/Kconfig | 1 + arch/arc/include/asm/io.h | 19 +++++++--- arch/arc/mm/ioremap.c | 60 +++++-------------------------- arch/arm64/include/asm/io.h | 5 +-- arch/arm64/mm/ioremap.c | 16 ++++++--- arch/hexagon/Kconfig | 1 + arch/hexagon/include/asm/io.h | 9 +++-- arch/hexagon/mm/ioremap.c | 44 ----------------------- arch/ia64/Kconfig | 1 + arch/ia64/include/asm/io.h | 26 ++++++++------ arch/ia64/mm/ioremap.c | 50 ++++++-------------------- arch/openrisc/Kconfig | 1 + arch/openrisc/include/asm/io.h | 16 ++++++--- arch/openrisc/mm/ioremap.c | 51 +++++++++----------------- arch/parisc/Kconfig | 1 + arch/parisc/include/asm/io.h | 16 ++++++--- arch/parisc/mm/ioremap.c | 65 ++++------------------------------ arch/s390/Kconfig | 1 + arch/s390/include/asm/io.h | 26 +++++++++----- arch/s390/pci/pci.c | 60 +++++-------------------------- arch/sh/Kconfig | 1 + arch/sh/include/asm/io.h | 47 ++++++++---------------- arch/sh/mm/ioremap.c | 61 ++++++------------------------- arch/xtensa/Kconfig | 1 + arch/xtensa/include/asm/io.h | 39 +++++++++----------- arch/xtensa/mm/ioremap.c | 56 +++++++---------------------- include/asm-generic/io.h | 34 ++++++++++-------- mm/ioremap.c | 12 ++++--- 28 files changed, 230 insertions(+), 490 deletions(-) delete mode 100644 arch/hexagon/mm/ioremap.c -- 2.34.1
