Merge tag 'm68k-for-v5.11-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k

Pull m68k updates from Geert Uytterhoeven:

 - fix WARNING splat in pmac_zilog driver

 - fix ADB input device regression

 - assume maintainership for adb-iop and via-macii

 - minor fixes and improvements

 - defconfig updates

* tag 'm68k-for-v5.11-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  MAINTAINERS: Update m68k Mac entry
  macintosh/adb-iop: Send correct poll command
  macintosh/adb-iop: Always wait for reply message from IOP
  m68k: Fix WARNING splat in pmac_zilog driver
  m68k: Add a missing ELF_DETAILS in link script
  m68k: Drop redundant NOTES in link script
  m68k: mac: Update Kconfig help
  m68k: mac: Remove redundant VIA register writes
  m68k: mac: Remove dead code
  m68k: mac: Refactor iop_preinit() and iop_init()
  m68k: defconfig: Enable KUnit tests
  m68k: defconfig: Update defconfigs for v5.10-rc1
  m68k: Remove unused mach_max_dma_address
  m68k: Avoid xchg() warning

31 files changed, 122 insertions, 136 deletions

diff --git a/arch/m68k/Kconfig.machine b/arch/m68k/Kconfig.machine
index 17e8c3a292d7..054ff6392329 100644
--- a/arch/m68k/Kconfig.machine
+++ b/arch/m68k/Kconfig.machine
@@ -30,11 +30,9 @@ config MAC
 	select HAVE_ARCH_NVRAM_OPS
 	help
 	  This option enables support for the Apple Macintosh series of
-	  computers (yes, there is experimental support now, at least for part
-	  of the series).
-
-	  Say N unless you're willing to code the remaining necessary support.
-	  ;)
+	  computers. If you plan to use this kernel on a Mac, say Y here and
+	  browse the documentation available at <http://www.mac.linux-m68k.org/>;
+	  otherwise say N.
 
 config APOLLO
 	bool "Apollo support"
diff --git a/arch/m68k/amiga/config.c b/arch/m68k/amiga/config.c
index bee9f240f35d..3f6f7380d93c 100644
--- a/arch/m68k/amiga/config.c
+++ b/arch/m68k/amiga/config.c
@@ -383,14 +383,6 @@ void __init config_amiga(void)
 	mach_init_IRQ        = amiga_init_IRQ;
 	mach_get_model       = amiga_get_model;
 	mach_get_hardware_list = amiga_get_hardware_list;
-
-	/*
-	 * default MAX_DMA=0xffffffff on all machines. If we don't do so, the SCSI
-	 * code will not be able to allocate any mem for transfers, unless we are
-	 * dealing with a Z2 mem only system.                  /Jes
-	 */
-	mach_max_dma_address = 0xffffffff;
-
 	mach_reset           = amiga_reset;
 #if IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
 	mach_beep            = amiga_mksound;
diff --git a/arch/m68k/apollo/config.c b/arch/m68k/apollo/config.c
index 762da5d7a415..2ebe5b6d229b 100644
--- a/arch/m68k/apollo/config.c
+++ b/arch/m68k/apollo/config.c
@@ -150,7 +150,6 @@ void __init config_apollo(void)
 
 	mach_sched_init=dn_sched_init; /* */
 	mach_init_IRQ=dn_init_IRQ;
-	mach_max_dma_address = 0xffffffff;
 	mach_hwclk           = dn_dummy_hwclk; /* */
 	mach_reset	     = dn_dummy_reset;  /* */
 #ifdef CONFIG_HEARTBEAT
diff --git a/arch/m68k/atari/config.c b/arch/m68k/atari/config.c
index 7ec3161e8517..43b4e764a1ac 100644
--- a/arch/m68k/atari/config.c
+++ b/arch/m68k/atari/config.c
@@ -205,7 +205,6 @@ void __init config_atari(void)
 	mach_get_model	 = atari_get_model;
 	mach_get_hardware_list = atari_get_hardware_list;
 	mach_reset           = atari_reset;
-	mach_max_dma_address = 0xffffff;
 #if IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
 	mach_beep          = atari_mksound;
 #endif
diff --git a/arch/m68k/bvme6000/config.c b/arch/m68k/bvme6000/config.c
index 50f4d01363df..8afaa73ec802 100644
--- a/arch/m68k/bvme6000/config.c
+++ b/arch/m68k/bvme6000/config.c
@@ -101,7 +101,6 @@ void __init config_bvme6000(void)
     bvme6000_set_vectors();
 #endif
 
-    mach_max_dma_address = 0xffffffff;
     mach_sched_init      = bvme6000_sched_init;
     mach_init_IRQ        = bvme6000_init_IRQ;
     mach_hwclk           = bvme6000_hwclk;
diff --git a/arch/m68k/configs/amiga_defconfig b/arch/m68k/configs/amiga_defconfig
index f9f4fa595e13..19b40b6bc4b7 100644
--- a/arch/m68k/configs/amiga_defconfig
+++ b/arch/m68k/configs/amiga_defconfig
@@ -563,6 +563,7 @@ CONFIG_CRYPTO_RSA=m
 CONFIG_CRYPTO_DH=m
 CONFIG_CRYPTO_ECDH=m
 CONFIG_CRYPTO_ECRDSA=m
+CONFIG_CRYPTO_SM2=m
 CONFIG_CRYPTO_CURVE25519=m
 CONFIG_CRYPTO_CHACHA20POLY1305=m
 CONFIG_CRYPTO_AEGIS128=m
@@ -583,7 +584,6 @@ CONFIG_CRYPTO_RMD160=m
 CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES=y
@@ -626,6 +626,8 @@ CONFIG_MAGIC_SYSRQ=y
 CONFIG_TEST_LOCKUP=m
 CONFIG_WW_MUTEX_SELFTEST=m
 CONFIG_EARLY_PRINTK=y
+CONFIG_KUNIT=m
+CONFIG_KUNIT_ALL_TESTS=m
 CONFIG_TEST_LIST_SORT=m
 CONFIG_TEST_MIN_HEAP=m
 CONFIG_TEST_SORT=m
@@ -638,7 +640,6 @@ CONFIG_TEST_STRSCPY=m
 CONFIG_TEST_KSTRTOX=m
 CONFIG_TEST_PRINTF=m
 CONFIG_TEST_BITMAP=m
-CONFIG_TEST_BITFIELD=m
 CONFIG_TEST_UUID=m
 CONFIG_TEST_XARRAY=m
 CONFIG_TEST_OVERFLOW=m
@@ -653,9 +654,13 @@ CONFIG_TEST_BLACKHOLE_DEV=m
 CONFIG_FIND_BIT_BENCHMARK=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
+CONFIG_BITFIELD_KUNIT=m
+CONFIG_LINEAR_RANGES_TEST=m
+CONFIG_BITS_TEST=m
 CONFIG_TEST_UDELAY=m
 CONFIG_TEST_STATIC_KEYS=m
 CONFIG_TEST_KMOD=m
 CONFIG_TEST_MEMCAT_P=m
 CONFIG_TEST_STACKINIT=m
 CONFIG_TEST_MEMINIT=m
+CONFIG_TEST_FREE_PAGES=m
diff --git a/arch/m68k/configs/apollo_defconfig b/arch/m68k/configs/apollo_defconfig
index f4828e86d547..07516abe0489 100644
--- a/arch/m68k/configs/apollo_defconfig
+++ b/arch/m68k/configs/apollo_defconfig
@@ -519,6 +519,7 @@ CONFIG_CRYPTO_RSA=m
 CONFIG_CRYPTO_DH=m
 CONFIG_CRYPTO_ECDH=m
 CONFIG_CRYPTO_ECRDSA=m
+CONFIG_CRYPTO_SM2=m
 CONFIG_CRYPTO_CURVE25519=m
 CONFIG_CRYPTO_CHACHA20POLY1305=m
 CONFIG_CRYPTO_AEGIS128=m
@@ -539,7 +540,6 @@ CONFIG_CRYPTO_RMD160=m
 CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES=y
@@ -582,6 +582,8 @@ CONFIG_MAGIC_SYSRQ=y
 CONFIG_TEST_LOCKUP=m
 CONFIG_WW_MUTEX_SELFTEST=m
 CONFIG_EARLY_PRINTK=y
+CONFIG_KUNIT=m
+CONFIG_KUNIT_ALL_TESTS=m
 CONFIG_TEST_LIST_SORT=m
 CONFIG_TEST_MIN_HEAP=m
 CONFIG_TEST_SORT=m
@@ -594,7 +596,6 @@ CONFIG_TEST_STRSCPY=m
 CONFIG_TEST_KSTRTOX=m
 CONFIG_TEST_PRINTF=m
 CONFIG_TEST_BITMAP=m
-CONFIG_TEST_BITFIELD=m
 CONFIG_TEST_UUID=m
 CONFIG_TEST_XARRAY=m
 CONFIG_TEST_OVERFLOW=m
@@ -609,9 +610,13 @@ CONFIG_TEST_BLACKHOLE_DEV=m
 CONFIG_FIND_BIT_BENCHMARK=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
+CONFIG_BITFIELD_KUNIT=m
+CONFIG_LINEAR_RANGES_TEST=m
+CONFIG_BITS_TEST=m
 CONFIG_TEST_UDELAY=m
 CONFIG_TEST_STATIC_KEYS=m
 CONFIG_TEST_KMOD=m
 CONFIG_TEST_MEMCAT_P=m
 CONFIG_TEST_STACKINIT=m
 CONFIG_TEST_MEMINIT=m
+CONFIG_TEST_FREE_PAGES=m
diff --git a/arch/m68k/configs/atari_defconfig b/arch/m68k/configs/atari_defconfig
index e7911f141de1..cc901c4e9492 100644
--- a/arch/m68k/configs/atari_defconfig
+++ b/arch/m68k/configs/atari_defconfig
@@ -541,6 +541,7 @@ CONFIG_CRYPTO_RSA=m
 CONFIG_CRYPTO_DH=m
 CONFIG_CRYPTO_ECDH=m
 CONFIG_CRYPTO_ECRDSA=m
+CONFIG_CRYPTO_SM2=m
 CONFIG_CRYPTO_CURVE25519=m
 CONFIG_CRYPTO_CHACHA20POLY1305=m
 CONFIG_CRYPTO_AEGIS128=m
@@ -561,7 +562,6 @@ CONFIG_CRYPTO_RMD160=m
 CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES=y
@@ -604,6 +604,8 @@ CONFIG_MAGIC_SYSRQ=y
 CONFIG_TEST_LOCKUP=m
 CONFIG_WW_MUTEX_SELFTEST=m
 CONFIG_EARLY_PRINTK=y
+CONFIG_KUNIT=m
+CONFIG_KUNIT_ALL_TESTS=m
 CONFIG_TEST_LIST_SORT=m
 CONFIG_TEST_MIN_HEAP=m
 CONFIG_TEST_SORT=m
@@ -616,7 +618,6 @@ CONFIG_TEST_STRSCPY=m
 CONFIG_TEST_KSTRTOX=m
 CONFIG_TEST_PRINTF=m
 CONFIG_TEST_BITMAP=m
-CONFIG_TEST_BITFIELD=m
 CONFIG_TEST_UUID=m
 CONFIG_TEST_XARRAY=m
 CONFIG_TEST_OVERFLOW=m
@@ -631,9 +632,13 @@ CONFIG_TEST_BLACKHOLE_DEV=m
 CONFIG_FIND_BIT_BENCHMARK=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
+CONFIG_BITFIELD_KUNIT=m
+CONFIG_LINEAR_RANGES_TEST=m
+CONFIG_BITS_TEST=m
 CONFIG_TEST_UDELAY=m
 CONFIG_TEST_STATIC_KEYS=m
 CONFIG_TEST_KMOD=m
 CONFIG_TEST_MEMCAT_P=m
 CONFIG_TEST_STACKINIT=m
 CONFIG_TEST_MEMINIT=m
+CONFIG_TEST_FREE_PAGES=m
diff --git a/arch/m68k/configs/bvme6000_defconfig b/arch/m68k/configs/bvme6000_defconfig
index d574e438e6db..fc9a94aa7d6b 100644
--- a/arch/m68k/configs/bvme6000_defconfig
+++ b/arch/m68k/configs/bvme6000_defconfig
@@ -512,6 +512,7 @@ CONFIG_CRYPTO_RSA=m
 CONFIG_CRYPTO_DH=m
 CONFIG_CRYPTO_ECDH=m
 CONFIG_CRYPTO_ECRDSA=m
+CONFIG_CRYPTO_SM2=m
 CONFIG_CRYPTO_CURVE25519=m
 CONFIG_CRYPTO_CHACHA20POLY1305=m
 CONFIG_CRYPTO_AEGIS128=m
@@ -532,7 +533,6 @@ CONFIG_CRYPTO_RMD160=m
 CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES=y
@@ -575,6 +575,8 @@ CONFIG_MAGIC_SYSRQ=y
 CONFIG_TEST_LOCKUP=m
 CONFIG_WW_MUTEX_SELFTEST=m
 CONFIG_EARLY_PRINTK=y
+CONFIG_KUNIT=m
+CONFIG_KUNIT_ALL_TESTS=m
 CONFIG_TEST_LIST_SORT=m
 CONFIG_TEST_MIN_HEAP=m
 CONFIG_TEST_SORT=m
@@ -587,7 +589,6 @@ CONFIG_TEST_STRSCPY=m
 CONFIG_TEST_KSTRTOX=m
 CONFIG_TEST_PRINTF=m
 CONFIG_TEST_BITMAP=m
-CONFIG_TEST_BITFIELD=m
 CONFIG_TEST_UUID=m
 CONFIG_TEST_XARRAY=m
 CONFIG_TEST_OVERFLOW=m
@@ -602,9 +603,13 @@ CONFIG_TEST_BLACKHOLE_DEV=m
 CONFIG_FIND_BIT_BENCHMARK=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
+CONFIG_BITFIELD_KUNIT=m
+CONFIG_LINEAR_RANGES_TEST=m
+CONFIG_BITS_TEST=m
 CONFIG_TEST_UDELAY=m
 CONFIG_TEST_STATIC_KEYS=m
 CONFIG_TEST_KMOD=m
 CONFIG_TEST_MEMCAT_P=m
 CONFIG_TEST_STACKINIT=m
 CONFIG_TEST_MEMINIT=m
+CONFIG_TEST_FREE_PAGES=m
diff --git a/arch/m68k/configs/hp300_defconfig b/arch/m68k/configs/hp300_defconfig
index c7ce206e6138..260f1206c810 100644
--- a/arch/m68k/configs/hp300_defconfig
+++ b/arch/m68k/configs/hp300_defconfig
@@ -521,6 +521,7 @@ CONFIG_CRYPTO_RSA=m
 CONFIG_CRYPTO_DH=m
 CONFIG_CRYPTO_ECDH=m
 CONFIG_CRYPTO_ECRDSA=m
+CONFIG_CRYPTO_SM2=m
 CONFIG_CRYPTO_CURVE25519=m
 CONFIG_CRYPTO_CHACHA20POLY1305=m
 CONFIG_CRYPTO_AEGIS128=m
@@ -541,7 +542,6 @@ CONFIG_CRYPTO_RMD160=m
 CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES=y
@@ -584,6 +584,8 @@ CONFIG_MAGIC_SYSRQ=y
 CONFIG_TEST_LOCKUP=m
 CONFIG_WW_MUTEX_SELFTEST=m
 CONFIG_EARLY_PRINTK=y
+CONFIG_KUNIT=m
+CONFIG_KUNIT_ALL_TESTS=m
 CONFIG_TEST_LIST_SORT=m
 CONFIG_TEST_MIN_HEAP=m
 CONFIG_TEST_SORT=m
@@ -596,7 +598,6 @@ CONFIG_TEST_STRSCPY=m
 CONFIG_TEST_KSTRTOX=m
 CONFIG_TEST_PRINTF=m
 CONFIG_TEST_BITMAP=m
-CONFIG_TEST_BITFIELD=m
 CONFIG_TEST_UUID=m
 CONFIG_TEST_XARRAY=m
 CONFIG_TEST_OVERFLOW=m
@@ -611,9 +612,13 @@ CONFIG_TEST_BLACKHOLE_DEV=m
 CONFIG_FIND_BIT_BENCHMARK=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
+CONFIG_BITFIELD_KUNIT=m
+CONFIG_LINEAR_RANGES_TEST=m
+CONFIG_BITS_TEST=m
 CONFIG_TEST_UDELAY=m
 CONFIG_TEST_STATIC_KEYS=m
 CONFIG_TEST_KMOD=m
 CONFIG_TEST_MEMCAT_P=m
 CONFIG_TEST_STACKINIT=m
 CONFIG_TEST_MEMINIT=m
+CONFIG_TEST_FREE_PAGES=m
diff --git a/arch/m68k/configs/mac_defconfig b/arch/m68k/configs/mac_defconfig
index 3cd76bfaee03..f6d50b3fe8c2 100644
--- a/arch/m68k/configs/mac_defconfig
+++ b/arch/m68k/configs/mac_defconfig
@@ -544,6 +544,7 @@ CONFIG_CRYPTO_RSA=m
 CONFIG_CRYPTO_DH=m
 CONFIG_CRYPTO_ECDH=m
 CONFIG_CRYPTO_ECRDSA=m
+CONFIG_CRYPTO_SM2=m
 CONFIG_CRYPTO_CURVE25519=m
 CONFIG_CRYPTO_CHACHA20POLY1305=m
 CONFIG_CRYPTO_AEGIS128=m
@@ -564,7 +565,6 @@ CONFIG_CRYPTO_RMD160=m
 CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES=y
@@ -607,6 +607,8 @@ CONFIG_MAGIC_SYSRQ=y
 CONFIG_TEST_LOCKUP=m
 CONFIG_WW_MUTEX_SELFTEST=m
 CONFIG_EARLY_PRINTK=y
+CONFIG_KUNIT=m
+CONFIG_KUNIT_ALL_TESTS=m
 CONFIG_TEST_LIST_SORT=m
 CONFIG_TEST_MIN_HEAP=m
 CONFIG_TEST_SORT=m
@@ -619,7 +621,6 @@ CONFIG_TEST_STRSCPY=m
 CONFIG_TEST_KSTRTOX=m
 CONFIG_TEST_PRINTF=m
 CONFIG_TEST_BITMAP=m
-CONFIG_TEST_BITFIELD=m
 CONFIG_TEST_UUID=m
 CONFIG_TEST_XARRAY=m
 CONFIG_TEST_OVERFLOW=m
@@ -634,9 +635,13 @@ CONFIG_TEST_BLACKHOLE_DEV=m
 CONFIG_FIND_BIT_BENCHMARK=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
+CONFIG_BITFIELD_KUNIT=m
+CONFIG_LINEAR_RANGES_TEST=m
+CONFIG_BITS_TEST=m
 CONFIG_TEST_UDELAY=m
 CONFIG_TEST_STATIC_KEYS=m
 CONFIG_TEST_KMOD=m
 CONFIG_TEST_MEMCAT_P=m
 CONFIG_TEST_STACKINIT=m
 CONFIG_TEST_MEMINIT=m
+CONFIG_TEST_FREE_PAGES=m
diff --git a/arch/m68k/configs/multi_defconfig b/arch/m68k/configs/multi_defconfig
index c3d6faa7894f..fbe000ca0003 100644
--- a/arch/m68k/configs/multi_defconfig
+++ b/arch/m68k/configs/multi_defconfig
@@ -630,6 +630,7 @@ CONFIG_CRYPTO_RSA=m
 CONFIG_CRYPTO_DH=m
 CONFIG_CRYPTO_ECDH=m
 CONFIG_CRYPTO_ECRDSA=m
+CONFIG_CRYPTO_SM2=m
 CONFIG_CRYPTO_CURVE25519=m
 CONFIG_CRYPTO_CHACHA20POLY1305=m
 CONFIG_CRYPTO_AEGIS128=m
@@ -650,7 +651,6 @@ CONFIG_CRYPTO_RMD160=m
 CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES=y
@@ -693,6 +693,8 @@ CONFIG_MAGIC_SYSRQ=y
 CONFIG_TEST_LOCKUP=m
 CONFIG_WW_MUTEX_SELFTEST=m
 CONFIG_EARLY_PRINTK=y
+CONFIG_KUNIT=m
+CONFIG_KUNIT_ALL_TESTS=m
 CONFIG_TEST_LIST_SORT=m
 CONFIG_TEST_MIN_HEAP=m
 CONFIG_TEST_SORT=m
@@ -705,7 +707,6 @@ CONFIG_TEST_STRSCPY=m
 CONFIG_TEST_KSTRTOX=m
 CONFIG_TEST_PRINTF=m
 CONFIG_TEST_BITMAP=m
-CONFIG_TEST_BITFIELD=m
 CONFIG_TEST_UUID=m
 CONFIG_TEST_XARRAY=m
 CONFIG_TEST_OVERFLOW=m
@@ -720,9 +721,13 @@ CONFIG_TEST_BLACKHOLE_DEV=m
 CONFIG_FIND_BIT_BENCHMARK=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
+CONFIG_BITFIELD_KUNIT=m
+CONFIG_LINEAR_RANGES_TEST=m
+CONFIG_BITS_TEST=m
 CONFIG_TEST_UDELAY=m
 CONFIG_TEST_STATIC_KEYS=m
 CONFIG_TEST_KMOD=m
 CONFIG_TEST_MEMCAT_P=m
 CONFIG_TEST_STACKINIT=m
 CONFIG_TEST_MEMINIT=m
+CONFIG_TEST_FREE_PAGES=m
diff --git a/arch/m68k/configs/mvme147_defconfig b/arch/m68k/configs/mvme147_defconfig
index 5568aa7d9d41..25ca836a5701 100644
--- a/arch/m68k/configs/mvme147_defconfig
+++ b/arch/m68k/configs/mvme147_defconfig
@@ -511,6 +511,7 @@ CONFIG_CRYPTO_RSA=m
 CONFIG_CRYPTO_DH=m
 CONFIG_CRYPTO_ECDH=m
 CONFIG_CRYPTO_ECRDSA=m
+CONFIG_CRYPTO_SM2=m
 CONFIG_CRYPTO_CURVE25519=m
 CONFIG_CRYPTO_CHACHA20POLY1305=m
 CONFIG_CRYPTO_AEGIS128=m
@@ -531,7 +532,6 @@ CONFIG_CRYPTO_RMD160=m
 CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES=y
@@ -574,6 +574,8 @@ CONFIG_MAGIC_SYSRQ=y
 CONFIG_TEST_LOCKUP=m
 CONFIG_WW_MUTEX_SELFTEST=m
 CONFIG_EARLY_PRINTK=y
+CONFIG_KUNIT=m
+CONFIG_KUNIT_ALL_TESTS=m
 CONFIG_TEST_LIST_SORT=m
 CONFIG_TEST_MIN_HEAP=m
 CONFIG_TEST_SORT=m
@@ -586,7 +588,6 @@ CONFIG_TEST_STRSCPY=m
 CONFIG_TEST_KSTRTOX=m
 CONFIG_TEST_PRINTF=m
 CONFIG_TEST_BITMAP=m
-CONFIG_TEST_BITFIELD=m
 CONFIG_TEST_UUID=m
 CONFIG_TEST_XARRAY=m
 CONFIG_TEST_OVERFLOW=m
@@ -601,9 +602,13 @@ CONFIG_TEST_BLACKHOLE_DEV=m
 CONFIG_FIND_BIT_BENCHMARK=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
+CONFIG_BITFIELD_KUNIT=m
+CONFIG_LINEAR_RANGES_TEST=m
+CONFIG_BITS_TEST=m
 CONFIG_TEST_UDELAY=m
 CONFIG_TEST_STATIC_KEYS=m
 CONFIG_TEST_KMOD=m
 CONFIG_TEST_MEMCAT_P=m
 CONFIG_TEST_STACKINIT=m
 CONFIG_TEST_MEMINIT=m
+CONFIG_TEST_FREE_PAGES=m
diff --git a/arch/m68k/configs/mvme16x_defconfig b/arch/m68k/configs/mvme16x_defconfig
index 5b1e72ce53f8..5794e43a2acb 100644
--- a/arch/m68k/configs/mvme16x_defconfig
+++ b/arch/m68k/configs/mvme16x_defconfig
@@ -512,6 +512,7 @@ CONFIG_CRYPTO_RSA=m
 CONFIG_CRYPTO_DH=m
 CONFIG_CRYPTO_ECDH=m
 CONFIG_CRYPTO_ECRDSA=m
+CONFIG_CRYPTO_SM2=m
 CONFIG_CRYPTO_CURVE25519=m
 CONFIG_CRYPTO_CHACHA20POLY1305=m
 CONFIG_CRYPTO_AEGIS128=m
@@ -532,7 +533,6 @@ CONFIG_CRYPTO_RMD160=m
 CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES=y
@@ -575,6 +575,8 @@ CONFIG_MAGIC_SYSRQ=y
 CONFIG_TEST_LOCKUP=m
 CONFIG_WW_MUTEX_SELFTEST=m
 CONFIG_EARLY_PRINTK=y
+CONFIG_KUNIT=m
+CONFIG_KUNIT_ALL_TESTS=m
 CONFIG_TEST_LIST_SORT=m
 CONFIG_TEST_MIN_HEAP=m
 CONFIG_TEST_SORT=m
@@ -587,7 +589,6 @@ CONFIG_TEST_STRSCPY=m
 CONFIG_TEST_KSTRTOX=m
 CONFIG_TEST_PRINTF=m
 CONFIG_TEST_BITMAP=m
-CONFIG_TEST_BITFIELD=m
 CONFIG_TEST_UUID=m
 CONFIG_TEST_XARRAY=m
 CONFIG_TEST_OVERFLOW=m
@@ -602,9 +603,13 @@ CONFIG_TEST_BLACKHOLE_DEV=m
 CONFIG_FIND_BIT_BENCHMARK=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
+CONFIG_BITFIELD_KUNIT=m
+CONFIG_LINEAR_RANGES_TEST=m
+CONFIG_BITS_TEST=m
 CONFIG_TEST_UDELAY=m
 CONFIG_TEST_STATIC_KEYS=m
 CONFIG_TEST_KMOD=m
 CONFIG_TEST_MEMCAT_P=m
 CONFIG_TEST_STACKINIT=m
 CONFIG_TEST_MEMINIT=m
+CONFIG_TEST_FREE_PAGES=m
diff --git a/arch/m68k/configs/q40_defconfig b/arch/m68k/configs/q40_defconfig
index c3a3dcf30fb9..dbfb18938e11 100644
--- a/arch/m68k/configs/q40_defconfig
+++ b/arch/m68k/configs/q40_defconfig
@@ -530,6 +530,7 @@ CONFIG_CRYPTO_RSA=m
 CONFIG_CRYPTO_DH=m
 CONFIG_CRYPTO_ECDH=m
 CONFIG_CRYPTO_ECRDSA=m
+CONFIG_CRYPTO_SM2=m
 CONFIG_CRYPTO_CURVE25519=m
 CONFIG_CRYPTO_CHACHA20POLY1305=m
 CONFIG_CRYPTO_AEGIS128=m
@@ -550,7 +551,6 @@ CONFIG_CRYPTO_RMD160=m
 CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES=y
@@ -593,6 +593,8 @@ CONFIG_MAGIC_SYSRQ=y
 CONFIG_TEST_LOCKUP=m
 CONFIG_WW_MUTEX_SELFTEST=m
 CONFIG_EARLY_PRINTK=y
+CONFIG_KUNIT=m
+CONFIG_KUNIT_ALL_TESTS=m
 CONFIG_TEST_LIST_SORT=m
 CONFIG_TEST_MIN_HEAP=m
 CONFIG_TEST_SORT=m
@@ -605,7 +607,6 @@ CONFIG_TEST_STRSCPY=m
 CONFIG_TEST_KSTRTOX=m
 CONFIG_TEST_PRINTF=m
 CONFIG_TEST_BITMAP=m
-CONFIG_TEST_BITFIELD=m
 CONFIG_TEST_UUID=m
 CONFIG_TEST_XARRAY=m
 CONFIG_TEST_OVERFLOW=m
@@ -620,9 +621,13 @@ CONFIG_TEST_BLACKHOLE_DEV=m
 CONFIG_FIND_BIT_BENCHMARK=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
+CONFIG_BITFIELD_KUNIT=m
+CONFIG_LINEAR_RANGES_TEST=m
+CONFIG_BITS_TEST=m
 CONFIG_TEST_UDELAY=m
 CONFIG_TEST_STATIC_KEYS=m
 CONFIG_TEST_KMOD=m
 CONFIG_TEST_MEMCAT_P=m
 CONFIG_TEST_STACKINIT=m
 CONFIG_TEST_MEMINIT=m
+CONFIG_TEST_FREE_PAGES=m
diff --git a/arch/m68k/configs/sun3_defconfig b/arch/m68k/configs/sun3_defconfig
index 3c00e52f1bf0..e6afbeee7c4a 100644
--- a/arch/m68k/configs/sun3_defconfig
+++ b/arch/m68k/configs/sun3_defconfig
@@ -514,6 +514,7 @@ CONFIG_CRYPTO_RSA=m
 CONFIG_CRYPTO_DH=m
 CONFIG_CRYPTO_ECDH=m
 CONFIG_CRYPTO_ECRDSA=m
+CONFIG_CRYPTO_SM2=m
 CONFIG_CRYPTO_CURVE25519=m
 CONFIG_CRYPTO_CHACHA20POLY1305=m
 CONFIG_CRYPTO_AEGIS128=m
@@ -534,7 +535,6 @@ CONFIG_CRYPTO_RMD160=m
 CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES=y
@@ -576,6 +576,8 @@ CONFIG_STRING_SELFTEST=m
 CONFIG_MAGIC_SYSRQ=y
 CONFIG_TEST_LOCKUP=m
 CONFIG_WW_MUTEX_SELFTEST=m
+CONFIG_KUNIT=m
+CONFIG_KUNIT_ALL_TESTS=m
 CONFIG_TEST_LIST_SORT=m
 CONFIG_TEST_MIN_HEAP=m
 CONFIG_TEST_SORT=m
@@ -588,7 +590,6 @@ CONFIG_TEST_STRSCPY=m
 CONFIG_TEST_KSTRTOX=m
 CONFIG_TEST_PRINTF=m
 CONFIG_TEST_BITMAP=m
-CONFIG_TEST_BITFIELD=m
 CONFIG_TEST_UUID=m
 CONFIG_TEST_XARRAY=m
 CONFIG_TEST_OVERFLOW=m
@@ -603,9 +604,13 @@ CONFIG_TEST_BLACKHOLE_DEV=m
 CONFIG_FIND_BIT_BENCHMARK=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
+CONFIG_BITFIELD_KUNIT=m
+CONFIG_LINEAR_RANGES_TEST=m
+CONFIG_BITS_TEST=m
 CONFIG_TEST_UDELAY=m
 CONFIG_TEST_STATIC_KEYS=m
 CONFIG_TEST_KMOD=m
 CONFIG_TEST_MEMCAT_P=m
 CONFIG_TEST_STACKINIT=m
 CONFIG_TEST_MEMINIT=m
+CONFIG_TEST_FREE_PAGES=m
diff --git a/arch/m68k/configs/sun3x_defconfig b/arch/m68k/configs/sun3x_defconfig
index 241242d73cbd..5340507a9fff 100644
--- a/arch/m68k/configs/sun3x_defconfig
+++ b/arch/m68k/configs/sun3x_defconfig
@@ -513,6 +513,7 @@ CONFIG_CRYPTO_RSA=m
 CONFIG_CRYPTO_DH=m
 CONFIG_CRYPTO_ECDH=m
 CONFIG_CRYPTO_ECRDSA=m
+CONFIG_CRYPTO_SM2=m
 CONFIG_CRYPTO_CURVE25519=m
 CONFIG_CRYPTO_CHACHA20POLY1305=m
 CONFIG_CRYPTO_AEGIS128=m
@@ -533,7 +534,6 @@ CONFIG_CRYPTO_RMD160=m
 CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES=y
@@ -576,6 +576,8 @@ CONFIG_MAGIC_SYSRQ=y
 CONFIG_TEST_LOCKUP=m
 CONFIG_WW_MUTEX_SELFTEST=m
 CONFIG_EARLY_PRINTK=y
+CONFIG_KUNIT=m
+CONFIG_KUNIT_ALL_TESTS=m
 CONFIG_TEST_LIST_SORT=m
 CONFIG_TEST_MIN_HEAP=m
 CONFIG_TEST_SORT=m
@@ -588,7 +590,6 @@ CONFIG_TEST_STRSCPY=m
 CONFIG_TEST_KSTRTOX=m
 CONFIG_TEST_PRINTF=m
 CONFIG_TEST_BITMAP=m
-CONFIG_TEST_BITFIELD=m
 CONFIG_TEST_UUID=m
 CONFIG_TEST_XARRAY=m
 CONFIG_TEST_OVERFLOW=m
@@ -603,9 +604,13 @@ CONFIG_TEST_BLACKHOLE_DEV=m
 CONFIG_FIND_BIT_BENCHMARK=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
+CONFIG_BITFIELD_KUNIT=m
+CONFIG_LINEAR_RANGES_TEST=m
+CONFIG_BITS_TEST=m
 CONFIG_TEST_UDELAY=m
 CONFIG_TEST_STATIC_KEYS=m
 CONFIG_TEST_KMOD=m
 CONFIG_TEST_MEMCAT_P=m
 CONFIG_TEST_STACKINIT=m
 CONFIG_TEST_MEMINIT=m
+CONFIG_TEST_FREE_PAGES=m
diff --git a/arch/m68k/hp300/config.c b/arch/m68k/hp300/config.c
index a161d44fd20b..ce1eb3d3d55d 100644
--- a/arch/m68k/hp300/config.c
+++ b/arch/m68k/hp300/config.c
@@ -260,7 +260,6 @@ void __init config_hp300(void)
 #ifdef CONFIG_HEARTBEAT
 	mach_heartbeat       = hp300_pulse;
 #endif
-	mach_max_dma_address = 0xffffffff;
 
 	if (hp300_model >= HP_330 && hp300_model <= HP_433S &&
 	    hp300_model != HP_350) {
diff --git a/arch/m68k/include/asm/cmpxchg.h b/arch/m68k/include/asm/cmpxchg.h
index 3a3bdcfcd375..a4aa82021d3b 100644
--- a/arch/m68k/include/asm/cmpxchg.h
+++ b/arch/m68k/include/asm/cmpxchg.h
@@ -76,7 +76,7 @@ static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int siz
 }
 #endif
 
-#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
+#define xchg(ptr,x) ({(__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)));})
 
 #include <asm-generic/cmpxchg-local.h>
 
@@ -119,11 +119,11 @@ static inline unsigned long __cmpxchg(volatile void *p, unsigned long old,
 }
 
 #define cmpxchg(ptr, o, n)						    \
-	((__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o),	    \
-			(unsigned long)(n), sizeof(*(ptr))))
+	({(__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o),	    \
+			(unsigned long)(n), sizeof(*(ptr)));})
 #define cmpxchg_local(ptr, o, n)					    \
-	((__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o),	    \
-			(unsigned long)(n), sizeof(*(ptr))))
+	({(__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o),	    \
+			(unsigned long)(n), sizeof(*(ptr)));})
 
 #define cmpxchg64(ptr, o, n)	cmpxchg64_local((ptr), (o), (n))
 
diff --git a/arch/m68k/include/asm/machdep.h b/arch/m68k/include/asm/machdep.h
index 49bd3266b4b1..e564101790ab 100644
--- a/arch/m68k/include/asm/machdep.h
+++ b/arch/m68k/include/asm/machdep.h
@@ -27,7 +27,6 @@ extern void (*mach_halt)( void );
 extern void (*mach_power_off)( void );
 extern unsigned long (*mach_hd_init) (unsigned long, unsigned long);
 extern void (*mach_hd_setup)(char *, int *);
-extern long mach_max_dma_address;
 extern void (*mach_heartbeat) (int);
 extern void (*mach_l2_flush) (int);
 extern void (*mach_beep) (unsigned int, unsigned int);
diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c
index ab8aa7be260f..ade96b1ad946 100644
--- a/arch/m68k/kernel/setup_mm.c
+++ b/arch/m68k/kernel/setup_mm.c
@@ -99,7 +99,6 @@ EXPORT_SYMBOL(mach_set_rtc_pll);
 void (*mach_reset)( void );
 void (*mach_halt)( void );
 void (*mach_power_off)( void );
-long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */
 #ifdef CONFIG_HEARTBEAT
 void (*mach_heartbeat) (int);
 EXPORT_SYMBOL(mach_heartbeat);
diff --git a/arch/m68k/kernel/vmlinux-nommu.lds b/arch/m68k/kernel/vmlinux-nommu.lds
index 7b975420c3d9..396e126a4258 100644
--- a/arch/m68k/kernel/vmlinux-nommu.lds
+++ b/arch/m68k/kernel/vmlinux-nommu.lds
@@ -65,7 +65,6 @@ SECTIONS {
 	_edata = .;
 
 	EXCEPTION_TABLE(16)
-	NOTES
 
 	. = ALIGN(PAGE_SIZE);
 	__init_begin = .;
@@ -87,7 +86,7 @@ SECTIONS {
 	_end = .;
 
 	STABS_DEBUG
-	.comment 0 : { *(.comment) }
+	ELF_DETAILS
 
 	/* Sections to be discarded */
 	DISCARDS
diff --git a/arch/m68k/kernel/vmlinux-std.lds b/arch/m68k/kernel/vmlinux-std.lds
index 4d33da4e7106..ed1d9eda3190 100644
--- a/arch/m68k/kernel/vmlinux-std.lds
+++ b/arch/m68k/kernel/vmlinux-std.lds
@@ -49,7 +49,6 @@ SECTIONS
 	*(.m68k_fixup)
 	__stop_fixup = .;
   }
-  NOTES
   .init_end : {
 	/* This ALIGN be in a section so that _end is at the end of the
 	   load segment. */
@@ -60,7 +59,7 @@ SECTIONS
   _end = . ;
 
   STABS_DEBUG
-  .comment 0 : { *(.comment) }
+  ELF_DETAILS
 
   /* Sections to be discarded */
   DISCARDS
diff --git a/arch/m68k/kernel/vmlinux-sun3.lds b/arch/m68k/kernel/vmlinux-sun3.lds
index 87d9f4d08f65..4a52f44f2ef0 100644
--- a/arch/m68k/kernel/vmlinux-sun3.lds
+++ b/arch/m68k/kernel/vmlinux-sun3.lds
@@ -33,7 +33,6 @@ SECTIONS
   RW_DATA(16, PAGE_SIZE, THREAD_SIZE) :data
   /* End of data goes *here* so that freeing init code works properly. */
   _edata = .;
-  NOTES
 
   /* will be freed after init */
   . = ALIGN(PAGE_SIZE);	/* Init code and data */
@@ -53,6 +52,7 @@ __init_begin = .;
   _end = . ;
 
   STABS_DEBUG
+  ELF_DETAILS
 
   /* Sections to be discarded */
   DISCARDS
diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c
index 0ac53d87493c..e239d2ddccec 100644
--- a/arch/m68k/mac/config.c
+++ b/arch/m68k/mac/config.c
@@ -55,7 +55,6 @@ struct mac_booter_data mac_bi_data;
 static unsigned long mac_orig_videoaddr;
 
 extern int mac_hwclk(int, struct rtc_time *);
-extern void iop_preinit(void);
 extern void iop_init(void);
 extern void via_init(void);
 extern void via_init_clock(irq_handler_t func);
@@ -141,7 +140,6 @@ void __init config_mac(void)
 	mach_reset = mac_reset;
 	mach_halt = mac_poweroff;
 	mach_power_off = mac_poweroff;
-	mach_max_dma_address = 0xffffffff;
 #if IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
 	mach_beep = mac_mksound;
 #endif
@@ -777,16 +775,12 @@ static struct resource scc_b_rsrcs[] = {
 struct platform_device scc_a_pdev = {
 	.name           = "scc",
 	.id             = 0,
-	.num_resources  = ARRAY_SIZE(scc_a_rsrcs),
-	.resource       = scc_a_rsrcs,
 };
 EXPORT_SYMBOL(scc_a_pdev);
 
 struct platform_device scc_b_pdev = {
 	.name           = "scc",
 	.id             = 1,
-	.num_resources  = ARRAY_SIZE(scc_b_rsrcs),
-	.resource       = scc_b_rsrcs,
 };
 EXPORT_SYMBOL(scc_b_pdev);
 
@@ -813,10 +807,15 @@ static void __init mac_identify(void)
 
 	/* Set up serial port resources for the console initcall. */
 
-	scc_a_rsrcs[0].start = (resource_size_t) mac_bi_data.sccbase + 2;
-	scc_a_rsrcs[0].end   = scc_a_rsrcs[0].start;
-	scc_b_rsrcs[0].start = (resource_size_t) mac_bi_data.sccbase;
-	scc_b_rsrcs[0].end   = scc_b_rsrcs[0].start;
+	scc_a_rsrcs[0].start     = (resource_size_t)mac_bi_data.sccbase + 2;
+	scc_a_rsrcs[0].end       = scc_a_rsrcs[0].start;
+	scc_a_pdev.num_resources = ARRAY_SIZE(scc_a_rsrcs);
+	scc_a_pdev.resource      = scc_a_rsrcs;
+
+	scc_b_rsrcs[0].start     = (resource_size_t)mac_bi_data.sccbase;
+	scc_b_rsrcs[0].end       = scc_b_rsrcs[0].start;
+	scc_b_pdev.num_resources = ARRAY_SIZE(scc_b_rsrcs);
+	scc_b_pdev.resource      = scc_b_rsrcs;
 
 	switch (macintosh_config->scc_type) {
 	case MAC_SCC_PSC:
@@ -835,13 +834,6 @@ static void __init mac_identify(void)
 		break;
 	}
 
-	/*
-	 * We need to pre-init the IOPs, if any. Otherwise
-	 * the serial console won't work if the user had
-	 * the serial ports set to "Faster" mode in MacOS.
-	 */
-	iop_preinit();
-
 	pr_info("Detected Macintosh model: %d\n", model);
 
 	/*
diff --git a/arch/m68k/mac/iop.c b/arch/m68k/mac/iop.c
index c669a7644301..de156a027f5b 100644
--- a/arch/m68k/mac/iop.c
+++ b/arch/m68k/mac/iop.c
@@ -47,6 +47,10 @@
  *
  * TODO:
  *
+ * o The SCC IOP has to be placed in bypass mode before the serial console
+ *   gets initialized. iop_init() would be one place to do that. Or the
+ *   bootloader could do that. For now, the Serial Switch control panel
+ *   is needed for that -- contrary to the changelog above.
  * o Something should be periodically checking iop_alive() to make sure the
  *   IOP hasn't died.
  * o Some of the IOP manager routines need better error checking and
@@ -225,40 +229,6 @@ static struct iop_msg *iop_get_unused_msg(void)
 }
 
 /*
- * This is called by the startup code before anything else. Its purpose
- * is to find and initialize the IOPs early in the boot sequence, so that
- * the serial IOP can be placed into bypass mode _before_ we try to
- * initialize the serial console.
- */
-
-void __init iop_preinit(void)
-{
-	if (macintosh_config->scc_type == MAC_SCC_IOP) {
-		if (macintosh_config->ident == MAC_MODEL_IIFX) {
-			iop_base[IOP_NUM_SCC] = (struct mac_iop *) SCC_IOP_BASE_IIFX;
-		} else {
-			iop_base[IOP_NUM_SCC] = (struct mac_iop *) SCC_IOP_BASE_QUADRA;
-		}
-		iop_scc_present = 1;
-	} else {
-		iop_base[IOP_NUM_SCC] = NULL;
-		iop_scc_present = 0;
-	}
-	if (macintosh_config->adb_type == MAC_ADB_IOP) {
-		if (macintosh_config->ident == MAC_MODEL_IIFX) {
-			iop_base[IOP_NUM_ISM] = (struct mac_iop *) ISM_IOP_BASE_IIFX;
-		} else {
-			iop_base[IOP_NUM_ISM] = (struct mac_iop *) ISM_IOP_BASE_QUADRA;
-		}
-		iop_stop(iop_base[IOP_NUM_ISM]);
-		iop_ism_present = 1;
-	} else {
-		iop_base[IOP_NUM_ISM] = NULL;
-		iop_ism_present = 0;
-	}
-}
-
-/*
  * Initialize the IOPs, if present.
  */
 
@@ -266,11 +236,23 @@ void __init iop_init(void)
 {
 	int i;
 
-	if (iop_scc_present) {
+	if (macintosh_config->scc_type == MAC_SCC_IOP) {
+		if (macintosh_config->ident == MAC_MODEL_IIFX)
+			iop_base[IOP_NUM_SCC] = (struct mac_iop *)SCC_IOP_BASE_IIFX;
+		else
+			iop_base[IOP_NUM_SCC] = (struct mac_iop *)SCC_IOP_BASE_QUADRA;
+		iop_scc_present = 1;
 		pr_debug("SCC IOP detected at %p\n", iop_base[IOP_NUM_SCC]);
 	}
-	if (iop_ism_present) {
+	if (macintosh_config->adb_type == MAC_ADB_IOP) {
+		if (macintosh_config->ident == MAC_MODEL_IIFX)
+			iop_base[IOP_NUM_ISM] = (struct mac_iop *)ISM_IOP_BASE_IIFX;
+		else
+			iop_base[IOP_NUM_ISM] = (struct mac_iop *)ISM_IOP_BASE_QUADRA;
+		iop_ism_present = 1;
 		pr_debug("ISM IOP detected at %p\n", iop_base[IOP_NUM_ISM]);
+
+		iop_stop(iop_base[IOP_NUM_ISM]);
 		iop_start(iop_base[IOP_NUM_ISM]);
 		iop_alive(iop_base[IOP_NUM_ISM]); /* clears the alive flag */
 	}
diff --git a/arch/m68k/mac/via.c b/arch/m68k/mac/via.c
index ac77d73af19a..9f2b32f22f16 100644
--- a/arch/m68k/mac/via.c
+++ b/arch/m68k/mac/via.c
@@ -169,8 +169,6 @@ void __init via_init(void)
 
 	via1[vIER] = 0x7F;
 	via1[vIFR] = 0x7F;
-	via1[vT1LL] = 0;
-	via1[vT1LH] = 0;
 	via1[vT1CL] = 0;
 	via1[vT1CH] = 0;
 	via1[vT2CL] = 0;
@@ -225,8 +223,6 @@ void __init via_init(void)
 	via2[gIER] = 0x7F;
 	via2[gIFR] = 0x7F | rbv_clear;
 	if (!rbv_present) {
-		via2[vT1LL] = 0;
-		via2[vT1LH] = 0;
 		via2[vT1CL] = 0;
 		via2[vT1CH] = 0;
 		via2[vT2CL] = 0;
@@ -305,21 +301,6 @@ void via_l2_flush(int writeback)
 }
 
 /*
- * Return the status of the L2 cache on a IIci
- */
-
-int via_get_cache_disable(void)
-{
-	/* Safeguard against being called accidentally */
-	if (!via2) {
-		printk(KERN_ERR "via_get_cache_disable called on a non-VIA machine!\n");
-		return 1;
-	}
-
-	return (int) via2[gBufB] & VIA2B_vCDis;
-}
-
-/*
  * Initialize VIA2 for Nubus access
  */
 
@@ -619,8 +600,6 @@ void __init via_init_clock(irq_handler_t timer_routine)
 		return;
 	}
 
-	via1[vT1LL] = VIA_TC_LOW;
-	via1[vT1LH] = VIA_TC_HIGH;
 	via1[vT1CL] = VIA_TC_LOW;
 	via1[vT1CH] = VIA_TC_HIGH;
 	via1[vACR] |= 0x40;
diff --git a/arch/m68k/mvme147/config.c b/arch/m68k/mvme147/config.c
index 490700aa2212..ead0e51ecd42 100644
--- a/arch/m68k/mvme147/config.c
+++ b/arch/m68k/mvme147/config.c
@@ -80,7 +80,6 @@ void __init mvme147_init_IRQ(void)
 
 void __init config_mvme147(void)
 {
-	mach_max_dma_address	= 0x01000000;
 	mach_sched_init		= mvme147_sched_init;
 	mach_init_IRQ		= mvme147_init_IRQ;
 	mach_hwclk		= mvme147_hwclk;
diff --git a/arch/m68k/mvme16x/config.c b/arch/m68k/mvme16x/config.c
index 5b86d10e0f84..79896c331d55 100644
--- a/arch/m68k/mvme16x/config.c
+++ b/arch/m68k/mvme16x/config.c
@@ -268,7 +268,6 @@ void __init config_mvme16x(void)
     char id[40];
     uint16_t brdno = be16_to_cpu(p->brdno);
 
-    mach_max_dma_address = 0xffffffff;
     mach_sched_init      = mvme16x_sched_init;
     mach_init_IRQ        = mvme16x_init_IRQ;
     mach_hwclk           = mvme16x_hwclk;
diff --git a/arch/m68k/q40/config.c b/arch/m68k/q40/config.c
index 4627de3c0603..58566262127d 100644
--- a/arch/m68k/q40/config.c
+++ b/arch/m68k/q40/config.c
@@ -185,11 +185,6 @@ void __init config_q40(void)
 
 	/* disable a few things that SMSQ might have left enabled */
 	q40_disable_irqs();
-
-	/* no DMA at all, but ide-scsi requires it.. make sure
-	 * all physical RAM fits into the boundary - otherwise
-	 * allocator may play costly and useless tricks */
-	mach_max_dma_address = 1024*1024*1024;
 }
 
 
diff --git a/arch/m68k/sun3x/config.c b/arch/m68k/sun3x/config.c
index d806dee71a9c..37121a0f1253 100644
--- a/arch/m68k/sun3x/config.c
+++ b/arch/m68k/sun3x/config.c
@@ -44,8 +44,6 @@ void __init config_sun3x(void)
 
 	sun3x_prom_init();
 
-	mach_max_dma_address = 0xffffffff; /* we can DMA anywhere, whee */
-
 	mach_sched_init      = sun3x_sched_init;
 	mach_init_IRQ        = sun3_init_IRQ;