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Commit 80b8585b authored by Wu Zhangjin's avatar Wu Zhangjin Committed by Ralf Baechle
Browse files

MIPS: 64-bit: Fix o32 lookup_dcookie syscall 



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: default avatarChen Jie <chenj@lemote.com>
Signed-off-by: default avatarHu Hongbing <huhb@lemote.com>
Signed-off-by: default avatarWu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent a22d621c

arch/mips/kernel/linux32.c

+6 −0
Original line number Diff line number Diff line
@@ -428,3 +428,9 @@ _sys32_clone(nabi_no_regargs struct pt_regs regs) 
	return do_fork(clone_flags, newsp, &regs, 0,

	               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);

}

arch/mips/kernel/scall64-o32.S

+1 −1
Original line number Diff line number Diff line
@@ -450,7 +450,7 @@ sys_call_table: 
	PTR	sys_io_submit

	PTR	sys_io_cancel			/* 4245 */

	PTR	sys_exit_group

	PTR	sys_lookup_dcookie

	PTR	sys32_lookup_dcookie

	PTR	sys_epoll_create

	PTR	sys_epoll_ctl

	PTR	sys_epoll_wait			/* 4250 */