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| author | Arnd Bergmann <arnd@arndb.de> | 2021-01-23 15:21:22 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2021-07-27 23:01:13 +0200 |
| commit | 98b861a304318e60eea584bef123d924e5d0dcff (patch) | |
| tree | ea6c7fa898e97596e5e865a90213a6a1d1e565db /arch/h8300 | |
| parent | e93a1cb8d2b3dccd31bde77373c8d5619f0e0a10 (diff) | |
| download | linux-stable-98b861a304318e60eea584bef123d924e5d0dcff.tar.gz linux-stable-98b861a304318e60eea584bef123d924e5d0dcff.tar.bz2 linux-stable-98b861a304318e60eea584bef123d924e5d0dcff.zip | |
asm-generic: uaccess: remove inline strncpy_from_user/strnlen_user
The inline version is used on three NOMMU architectures and is
particularly inefficient when it scans the string one byte at a time
twice. It also lacks a check for user_addr_max(), but this is
probably ok on NOMMU targets.
Consolidate the asm-generic implementation with the library version
that is used everywhere else. This version is generalized enough to
work efficiently on both MMU and NOMMU targets, and using the
same code everywhere reduces the potential for subtle bugs.
Mark the prototypes as __must_check in the process.
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/h8300')
| -rw-r--r-- | arch/h8300/Kconfig | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig index 3e3e0f16f7e0..53dfd2d47e0e 100644 --- a/arch/h8300/Kconfig +++ b/arch/h8300/Kconfig @@ -11,6 +11,8 @@ config H8300 select GENERIC_IRQ_SHOW select FRAME_POINTER select GENERIC_CPU_DEVICES + select GENERIC_STRNCPY_FROM_USER + select GENERIC_STRNLEN_USER select MODULES_USE_ELF_RELA select COMMON_CLK select ARCH_WANT_FRAME_POINTERS |