MIPS: tlbex: Remove some RIXI redundancy

The cpu_has_rixi cases in build_update_entries are now identical to the
non-RIXI cases with the one exception of the r45k_bvahwbug case which is
hardcoded as never happening anyway & presumably was either missed from
the RIXI path or would never happen on a CPU with RIXI support. Remove
the redundant checks & duplication.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: linux-kernel@vger.kernel.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/11215/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/mm/tlbex.c

@@ -1009,15 +1009,9 @@ static void build_update_entries(u32 **p, unsigned int tmp, unsigned int ptep)
 	if (cpu_has_64bits) {
 		uasm_i_ld(p, tmp, 0, ptep); /* get even pte */
 		uasm_i_ld(p, ptep, sizeof(pte_t), ptep); /* get odd pte */
-		if (cpu_has_rixi) {
 		build_convert_pte_to_entrylo(p, tmp);
 		UASM_i_MTC0(p, tmp, C0_ENTRYLO0); /* load it */
 		build_convert_pte_to_entrylo(p, ptep);
-		} else {
-			build_convert_pte_to_entrylo(p, tmp);
-			UASM_i_MTC0(p, tmp, C0_ENTRYLO0); /* load it */
-			build_convert_pte_to_entrylo(p, ptep);
-		}
 		UASM_i_MTC0(p, ptep, C0_ENTRYLO1); /* load it */
 	} else {
 		int pte_off_even = sizeof(pte_t) / 2;
@@ -1049,13 +1043,6 @@ static void build_update_entries(u32 **p, unsigned int tmp, unsigned int ptep)
 	UASM_i_LW(p, ptep, sizeof(pte_t), ptep); /* get odd pte */
 	if (r45k_bvahwbug())
 		build_tlb_probe_entry(p);
-	if (cpu_has_rixi) {
-		build_convert_pte_to_entrylo(p, tmp);
-		if (r4k_250MHZhwbug())
-			UASM_i_MTC0(p, 0, C0_ENTRYLO0);
-		UASM_i_MTC0(p, tmp, C0_ENTRYLO0); /* load it */
-		build_convert_pte_to_entrylo(p, ptep);
-	} else {
 	build_convert_pte_to_entrylo(p, tmp);
 	if (r4k_250MHZhwbug())
 		UASM_i_MTC0(p, 0, C0_ENTRYLO0);
@@ -1063,7 +1050,6 @@ static void build_update_entries(u32 **p, unsigned int tmp, unsigned int ptep)
 	build_convert_pte_to_entrylo(p, ptep);
 	if (r45k_bvahwbug())
 		uasm_i_mfc0(p, tmp, C0_INDEX);
-	}
 	if (r4k_250MHZhwbug())
 		UASM_i_MTC0(p, 0, C0_ENTRYLO1);
 	UASM_i_MTC0(p, ptep, C0_ENTRYLO1); /* load it */