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 For patch 1~3, I don't merge them because I made them in different rounds of changing. And splitting them makes me easily describe the intention and make review easier. I can merge them after v1 reviewing if anyone thinks they should be merged. Testing: It passes the testing on arm64 and s390. 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 mm: ioremap: fixup the physical address 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 | 3 +- arch/arm64/mm/ioremap.c | 17 ++++++--- 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 | 49 ++++++++----------------- arch/parisc/include/asm/io.h | 16 ++++++--- arch/parisc/mm/ioremap.c | 66 ++++------------------------------ 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 | 62 +++++++------------------------- arch/xtensa/Kconfig | 1 + arch/xtensa/include/asm/io.h | 39 ++++++++++---------- arch/xtensa/mm/ioremap.c | 56 +++++++---------------------- include/asm-generic/io.h | 24 +++++++------ mm/ioremap.c | 21 ++++++----- 27 files changed, 232 insertions(+), 485 deletions(-) delete mode 100644 arch/hexagon/mm/ioremap.c -- 2.34.1
