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MIPS: OCTEON: Delete unused COP2 saving code

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Commit 2c952e06e4 ("MIPS: Move cop2 save/restore to switch_to()")
removes assembler code to store COP2 registers.  Commit
a36d8225bc ("MIPS: OCTEON: Enable use of FPU") mistakenly
restores it

Fixes: a36d8225bc ("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>
This commit is contained in:
Aleksey Makarov 2015-01-15 16:11:09 +03:00 • committed by Ralf Baechle
parent 2d98cae6e3
commit 69f7cd4724
1 changed files with 0 additions and 26 deletions
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26
arch/mips/kernel/octeon_switch.S
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@ -52,32 +52,6 @@
.set pop .set pop
1: 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 #if CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0
/* Check if we need to store CVMSEG state */ /* Check if we need to store CVMSEG state */
dmfc0 t0, $11,7 /* CvmMemCtl */ dmfc0 t0, $11,7 /* CvmMemCtl */