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| author |   Helge Deller <deller@gmx.de> | 2021-09-04 23:49:26 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2021-09-09 12:44:30 +0200 |
| commit | 1260dea6d2eb75706c978da828a36f0def590d3a (patch) | |
| tree | c7a40aaf59865b28ef6809c2eef65be440e50892 /arch | |
| parent | parisc: Add missing FORCE prerequisite in Makefile (diff) | |
| download | linux-dev-1260dea6d2eb75706c978da828a36f0def590d3a.tar.xz linux-dev-1260dea6d2eb75706c978da828a36f0def590d3a.zip | |
parisc: Drop strnlen_user() in favour of generic version
As suggested by Arnd Bergmann, drop the parisc version of
strnlen_user() and switch to the generic version.
Suggested-by: Arnd Bergmann <arnd@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/parisc/Kconfig | 1 | ||||
| -rw-r--r-- | arch/parisc/include/asm/uaccess.h | 3 | ||||
| -rw-r--r-- | arch/parisc/kernel/parisc_ksyms.c | 1 | ||||
| -rw-r--r-- | arch/parisc/lib/lusercopy.S | 34 |
4 files changed, 1 insertions, 38 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 3001a7d8fc76..86e879608e2a 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -10,7 +10,6 @@ config PARISC select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_STRICT_KERNEL_RWX select ARCH_HAS_UBSAN_SANITIZE_ALL - select ARCH_HAS_STRNLEN_USER select ARCH_NO_SG_CHAIN select ARCH_SUPPORTS_HUGETLBFS if PA20 select ARCH_SUPPORTS_MEMORY_FAILURE diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h index 7c13314aae4a..cfb4ca7e39fe 100644 --- a/arch/parisc/include/asm/uaccess.h +++ b/arch/parisc/include/asm/uaccess.h @@ -201,13 +201,12 @@ struct exception_table_entry { extern long strncpy_from_user(char *, const char __user *, long); extern unsigned lclear_user(void __user *, unsigned long); -extern long lstrnlen_user(const char __user *, long); +extern __must_check long strnlen_user(const char __user *src, long n); /* * Complex access routines -- macros */ #define user_addr_max() (~0UL) -#define strnlen_user lstrnlen_user #define clear_user lclear_user #define __clear_user lclear_user diff --git a/arch/parisc/kernel/parisc_ksyms.c b/arch/parisc/kernel/parisc_ksyms.c index e8a6a751dfd8..00297e8e1c88 100644 --- a/arch/parisc/kernel/parisc_ksyms.c +++ b/arch/parisc/kernel/parisc_ksyms.c @@ -32,7 +32,6 @@ EXPORT_SYMBOL(__xchg64); #include <linux/uaccess.h> EXPORT_SYMBOL(lclear_user); -EXPORT_SYMBOL(lstrnlen_user); #ifndef CONFIG_64BIT /* Needed so insmod can set dp value */ diff --git a/arch/parisc/lib/lusercopy.S b/arch/parisc/lib/lusercopy.S index 36d6a8638ead..0aad5ce89f4d 100644 --- a/arch/parisc/lib/lusercopy.S +++ b/arch/parisc/lib/lusercopy.S @@ -67,40 +67,6 @@ $lclu_done: ENDPROC_CFI(lclear_user) - /* - * long lstrnlen_user(char *s, long n) - * - * Returns 0 if exception before zero byte or reaching N, - * N+1 if N would be exceeded, - * else strlen + 1 (i.e. includes zero byte). - */ - -ENTRY_CFI(lstrnlen_user) - comib,= 0,%r25,$lslen_nzero - copy %r26,%r24 - get_sr -1: ldbs,ma 1(%sr1,%r26),%r1 -$lslen_loop: - comib,=,n 0,%r1,$lslen_done - addib,<> -1,%r25,$lslen_loop -2: ldbs,ma 1(%sr1,%r26),%r1 -$lslen_done: - bv %r0(%r2) - sub %r26,%r24,%r28 - -$lslen_nzero: - b $lslen_done - ldo 1(%r26),%r26 /* special case for N == 0 */ - -3: b $lslen_done - copy %r24,%r26 /* reset r26 so 0 is returned on fault */ - - ASM_EXCEPTIONTABLE_ENTRY(1b,3b) - ASM_EXCEPTIONTABLE_ENTRY(2b,3b) - -ENDPROC_CFI(lstrnlen_user) - - /* * unsigned long pa_memcpy(void *dstp, const void *srcp, unsigned long len) * |