MIPS: Fix strnlen_user() return value in case of overlong strings.



We were returning maxlen like the userland strnlen if no '\0' character
was encountered while the kernel version is expected to return a value
larger than maxlen.  Fixed to return maxlen + 1.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

parent 30fa0530

arch/mips/lib/strnlen_user.S

+4 −2

Original line number	Original line	Diff line number	Diff line
	@@ -40,9 +40,11 @@ FEXPORT(__strnlen_\func\()_nocheck_asm)
	.else		.else
	EX(lbe, t0, (v0), .Lfault\@)		EX(lbe, t0, (v0), .Lfault\@)
	.endif		.endif
	PTR_ADDIU v0, 1		.set noreorder
	bnez t0, 1b		bnez t0, 1b
	1: PTR_SUBU v0, a0		1: PTR_ADDIU v0, 1
			.set reorder
			PTR_SUBU v0, a0
	jr ra		jr ra
	END(__strnlen_\func\()_asm)		END(__strnlen_\func\()_asm)