MIPS: OCTEON: Delete unused COP2 saving code

Commit 2c952e06e4f5 ("MIPS: Move cop2 save/restore to switch_to()")
removes assembler code to store COP2 registers.  Commit
a36d8225bceb ("MIPS: OCTEON: Enable use of FPU") mistakenly
restores it

Fixes: a36d8225bceb ("MIPS: OCTEON: Enable use of FPU")
Signed-off-by: Aleksey Makarov <aleksey.makarov@auriga.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: David Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/8937/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/kernel/octeon_switch.S b/arch/mips/kernel/octeon_switch.S
index f0a699d..423ae83 100644 (file)
--- a/arch/mips/kernel/octeon_switch.S
+++ b/arch/mips/kernel/octeon_switch.S
@@ -52,32 +52,6 @@
        .set pop
 1:
 
-       /* check if we need to save COP2 registers */
-       LONG_L  t0, ST_OFF(t3)
-       bbit0   t0, 30, 1f
-
-       /* Disable COP2 in the stored process state */
-       li      t1, ST0_CU2
-       xor     t0, t1
-       LONG_S  t0, ST_OFF(t3)
-
-       /* Enable COP2 so we can save it */
-       mfc0    t0, CP0_STATUS
-       or      t0, t1
-       mtc0    t0, CP0_STATUS
-
-       /* Save COP2 */
-       daddu   a0, THREAD_CP2
-       jal octeon_cop2_save
-       dsubu   a0, THREAD_CP2
-
-       /* Disable COP2 now that we are done */
-       mfc0    t0, CP0_STATUS
-       li      t1, ST0_CU2
-       xor     t0, t1
-       mtc0    t0, CP0_STATUS
-
-1:
 #if CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0
        /* Check if we need to store CVMSEG state */
        dmfc0   t0, $11,7       /* CvmMemCtl */