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sparc: no need to sign-extend in sync_file_range() wrapper 

the first argument will be sign-extended by sys_sync_file_range()
SYSCALL_DEFINE-generate wrapper; the last argument is unsigned int,
so the same wrapper will will truncate it anyway.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-03-02 10:38:22 -05:00
parent 728ee06ca8
commit 2ae80c43d4
2 changed files with 1 additions and 2 deletions
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1
arch/sparc/kernel/sys32.S
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@ -48,7 +48,6 @@ SIGN3(sys32_futex, compat_sys_futex, %o1, %o2, %o5)
SIGN1(sys32_recvfrom, compat_sys_recvfrom, %o0)
SIGN1(sys32_recvmsg, compat_sys_recvmsg, %o0)
SIGN1(sys32_sendmsg, compat_sys_sendmsg, %o0)
SIGN2(sys32_sync_file_range, compat_sync_file_range, %o0, %o5)
.globl sys32_mmap2
sys32_mmap2:

2
arch/sparc/kernel/sys_sparc32.c
View File

@ -238,7 +238,7 @@ long compat_sys_fadvise64_64(int fd,
advice);
}
long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, int flags)
long sys32_sync_file_range(unsigned int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, unsigned int flags)
{
return sys_sync_file_range(fd,
(off_high << 32) | off_low,