MIPS: kernel: cps-vec: Replace "addi" with "addiu"

The "addi" instruction will trap on overflows which is not something
we need in this code, so we replace that with "addiu".

Link: http://www.linux-mips.org/archives/linux-mips/2015-01/msg00430.html
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: <stable@vger.kernel.org> # v3.15+
Cc: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>

diff --git a/arch/mips/kernel/cps-vec.S b/arch/mips/kernel/cps-vec.S
index 0384b05ab5a02413cbcb11a163375029f285255f..55b759a0019e61671d78919bc5b143ba5ff4a94d 100644 (file)
--- a/arch/mips/kernel/cps-vec.S
+++ b/arch/mips/kernel/cps-vec.S
@@ -99,11 +99,11 @@ not_nmi:
        xori    t2, t1, 0x7
        beqz    t2, 1f
         li     t3, 32
-       addi    t1, t1, 1
+       addiu   t1, t1, 1
        sllv    t1, t3, t1
 1:     /* At this point t1 == I-cache sets per way */
        _EXT    t2, v0, MIPS_CONF1_IA_SHF, MIPS_CONF1_IA_SZ
-       addi    t2, t2, 1
+       addiu   t2, t2, 1
        mul     t1, t1, t0
        mul     t1, t1, t2
 
@@ -126,11 +126,11 @@ icache_done:
        xori    t2, t1, 0x7
        beqz    t2, 1f
         li     t3, 32
-       addi    t1, t1, 1
+       addiu   t1, t1, 1
        sllv    t1, t3, t1
 1:     /* At this point t1 == D-cache sets per way */
        _EXT    t2, v0, MIPS_CONF1_DA_SHF, MIPS_CONF1_DA_SZ
-       addi    t2, t2, 1
+       addiu   t2, t2, 1
        mul     t1, t1, t0
        mul     t1, t1, t2
 
@@ -250,7 +250,7 @@ LEAF(mips_cps_core_init)
        mfc0    t0, CP0_MVPCONF0
        srl     t0, t0, MVPCONF0_PVPE_SHIFT
        andi    t0, t0, (MVPCONF0_PVPE >> MVPCONF0_PVPE_SHIFT)
-       addi    t7, t0, 1
+       addiu   t7, t0, 1
 
        /* If there's only 1, we're done */
        beqz    t0, 2f
@@ -280,7 +280,7 @@ LEAF(mips_cps_core_init)
        mttc0   t0, CP0_TCHALT
 
        /* Next VPE */
-       addi    t5, t5, 1
+       addiu   t5, t5, 1
        slt     t0, t5, t7
        bnez    t0, 1b
         nop
@@ -317,7 +317,7 @@ LEAF(mips_cps_boot_vpes)
        mfc0    t1, CP0_MVPCONF0
        srl     t1, t1, MVPCONF0_PVPE_SHIFT
        andi    t1, t1, MVPCONF0_PVPE >> MVPCONF0_PVPE_SHIFT
-       addi    t1, t1, 1
+       addiu   t1, t1, 1
 
        /* Calculate a mask for the VPE ID from EBase.CPUNum */
        clz     t1, t1
@@ -424,7 +424,7 @@ LEAF(mips_cps_boot_vpes)
 
        /* Next VPE */
 2:     srl     t6, t6, 1
-       addi    t5, t5, 1
+       addiu   t5, t5, 1
        bnez    t6, 1b
         nop