From: Greg Kroah-Hartman <[email protected]>
This reverts commit c890a458e27210d1a749a18941047a9e4209fa93 which is
commit e4849aff1e169b86c561738daf8ff020e9de1011 upstream
Guenter writes:
Upstream commit e4849aff1e16 ("MIPS: SiByte: Enable swiotlb for SWARM,
LittleSur and BigSur") results in build failures in v4.4.y and v4.14.y.
make bigsur_defconfig:
warning: (SIBYTE_SWARM && SIBYTE_SENTOSA && SIBYTE_BIGSUR &&
SWIOTLB_XEN && AMD_IOMMU) selects SWIOTLB which has unmet direct dependencies
(CAVIUM_OCTEON_SOC || MACH_LOONGSON64 && CPU_LOONGSON3 || NLM_XLP_BOARD ||
NLM_XLR_BOARD)
warning: (SIBYTE_SWARM && SIBYTE_SENTOSA && SIBYTE_BIGSUR &&
SWIOTLB_XEN && AMD_IOMMU) selects SWIOTLB which has unmet direct dependencies
(CAVIUM_OCTEON_SOC || MACH_LOONGSON64 && CPU_LOONGSON3 || NLM_XLP_BOARD ||
NLM_XLR_BOARD)
and the actual build:
lib/swiotlb.o: In function `swiotlb_tbl_map_single':
(.text+0x1c0): undefined reference to `iommu_is_span_boundary'
Makefile:1021: recipe for target 'vmlinux' failed
Reported-by: Guenter Roeck <[email protected]>
Cc: Maciej W. Rozycki <[email protected]>
Cc: Paul Burton <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Sasha Levin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/mips/Kconfig | 3 ---
arch/mips/sibyte/common/Makefile | 1 -
arch/mips/sibyte/common/dma.c | 14 --------------
3 files changed, 18 deletions(-)
delete mode 100644 arch/mips/sibyte/common/dma.c
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -761,7 +761,6 @@ config SIBYTE_SWARM
select SYS_SUPPORTS_HIGHMEM
select SYS_SUPPORTS_LITTLE_ENDIAN
select ZONE_DMA32 if 64BIT
- select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
config SIBYTE_LITTLESUR
bool "Sibyte BCM91250C2-LittleSur"
@@ -784,7 +783,6 @@ config SIBYTE_SENTOSA
select SYS_HAS_CPU_SB1
select SYS_SUPPORTS_BIG_ENDIAN
select SYS_SUPPORTS_LITTLE_ENDIAN
- select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
config SIBYTE_BIGSUR
bool "Sibyte BCM91480B-BigSur"
@@ -798,7 +796,6 @@ config SIBYTE_BIGSUR
select SYS_SUPPORTS_HIGHMEM
select SYS_SUPPORTS_LITTLE_ENDIAN
select ZONE_DMA32 if 64BIT
- select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
config SNI_RM
bool "SNI RM200/300/400"
--- a/arch/mips/sibyte/common/Makefile
+++ b/arch/mips/sibyte/common/Makefile
@@ -1,5 +1,4 @@
obj-y := cfe.o
-obj-$(CONFIG_SWIOTLB) += dma.o
obj-$(CONFIG_SIBYTE_BUS_WATCHER) += bus_watcher.o
obj-$(CONFIG_SIBYTE_CFE_CONSOLE) += cfe_console.o
obj-$(CONFIG_SIBYTE_TBPROF) += sb_tbprof.o
--- a/arch/mips/sibyte/common/dma.c
+++ /dev/null
@@ -1,14 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * DMA support for Broadcom SiByte platforms.
- *
- * Copyright (c) 2018 Maciej W. Rozycki
- */
-
-#include <linux/swiotlb.h>
-#include <asm/bootinfo.h>
-
-void __init plat_swiotlb_setup(void)
-{
- swiotlb_init(1);
-}
