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MIPS: 64-bit: Fix o32 lookup_dcookie syscall

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An o32 aplication passes a 64-bit value in a pair of registers; a 64-bit
kernel expects a 64-bit argument in a single register.

Signed-off-by: Chen Jie <chenj@lemote.com>
Signed-off-by: Hu Hongbing <huhb@lemote.com>
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Wu Zhangjin 2009-10-10 19:19:49 +08:00 committed by Ralf Baechle
parent a22d621c80
commit 80b8585b07
2 changed files with 7 additions and 1 deletions
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6
arch/mips/kernel/linux32.c
View file

@ -428,3 +428,9 @@ _sys32_clone(nabi_no_regargs struct pt_regs regs)
return do_fork(clone_flags, newsp, &regs, 0, return do_fork(clone_flags, newsp, &regs, 0,
parent_tidptr, child_tidptr); parent_tidptr, child_tidptr);
} }
asmlinkage long sys32_lookup_dcookie(u32 a0, u32 a1, char __user *buf,
size_t len)
{
return sys_lookup_dcookie(merge_64(a0, a1), buf, len);
}

2
arch/mips/kernel/scall64-o32.S
View file

@ -450,7 +450,7 @@ sys_call_table:
PTR sys_io_submit PTR sys_io_submit
PTR sys_io_cancel /* 4245 */ PTR sys_io_cancel /* 4245 */
PTR sys_exit_group PTR sys_exit_group
PTR sys_lookup_dcookie PTR sys32_lookup_dcookie
PTR sys_epoll_create PTR sys_epoll_create
PTR sys_epoll_ctl PTR sys_epoll_ctl
PTR sys_epoll_wait /* 4250 */ PTR sys_epoll_wait /* 4250 */