NeilBrown a63d706ea7 MIPS: ralink: Fix booting on MT7621 ... Since commit 3af5a67c86 ("MIPS: Fix early CM probing") the MT7621 has not been able to boot. This commit caused mips_cm_probe() to be called before mt7621.c::proc_soc_init(). prom_soc_init() has a comment explaining that mips_cm_probe() "wipes out the bootloader config" and means that configuration registers are no longer available. It has some code to re-enable this config. Before this re-enable code is run, the sysc register cannot be read, so when SYSC_REG_CHIP_NAME0 is read, a garbage value is returned and panic() is called. If we move the config-repair code to the top of prom_soc_init(), the registers can be read and boot can proceed. Very occasionally, the first register read after the reconfiguration returns garbage, so add a call to __sync(). Fixes: 3af5a67c86 ("MIPS: Fix early CM probing") Signed-off-by: NeilBrown <neil@brown.name> Reviewed-by: Matt Redfearn <matt.redfearn@mips.com> Cc: John Crispin <john@phrozen.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: <stable@vger.kernel.org> # 4.5+ Patchwork: https://patchwork.linux-mips.org/patch/18859/ Signed-off-by: James Hogan <jhogan@kernel.org>		2018-03-22 00:06:30 +00:00
..
alchemy	MIPS changes for 4.15	2017-11-15 11:36:08 -08:00
ar7	MIPS: AR7: ensure the port type's FCR value is used	2018-01-10 11:34:56 +01:00
ath25	MIPS: ath25: Check for kzalloc allocation failure	2018-02-23 09:35:54 +00:00
ath79	Merge branch 'i2c/for-4.15' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2017-11-14 17:52:21 -08:00
bcm47xx	MIPS: bcm47xx: enable ZBOOT support	2018-01-24 11:20:29 +00:00
bcm63xx	MIPS: BCM63XX: kconfig: Remove blank help text	2018-02-02 23:53:10 +09:00
bmips	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
boot	MIPS: boot: Define __ASSEMBLY__ for its.S build	2018-02-22 17:06:25 -08:00
cavium-octeon	MIPS: OCTEON: irq: Check for null return on kzalloc allocation	2018-02-23 09:44:46 +00:00
cobalt	MIPS: Cobalt: Fix typo	2016-08-03 08:16:30 +02:00
configs	MIPS changes for 4.16	2018-02-07 11:22:44 -08:00
dec	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
emma	MIPS: Avoid old-style declaration	2017-01-25 02:51:11 +01:00
fw	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
generic	MIPS: Generic: Support GIC in EIC mode	2018-02-05 14:36:03 +00:00
include	MIPS: Drop spurious __unused in struct compat_flock	2018-02-20 15:46:44 +00:00
jazz	MIPS: Set I/O port resource types correctly	2017-12-18 23:07:45 -06:00
jz4740	MIPS: ingenic: Initial GCW Zero support	2018-01-18 22:08:10 +00:00
kernel	MIPS: BMIPS: Do not mask IPIs during suspend	2018-03-05 23:35:04 +00:00
kvm	KVM: introduce kvm_arch_vcpu_async_ioctl	2017-12-14 09:26:59 +01:00
lantiq	MIPS: lantiq: ase: Enable MFD_SYSCON	2018-03-21 21:57:35 +00:00
lasat	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
lib	MIPS: Implement __multi3 for GCC7 MIPS64r6 builds	2018-01-11 14:40:31 +01:00
loongson32	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
loongson64	MIPS: Loongson64: Select ARCH_MIGHT_HAVE_PC_SERIO	2018-03-05 09:59:31 +00:00
math-emu	MIPS: math-emu: Mark fall throughs in switch statements with a comment	2017-12-12 17:20:20 +01:00
mm	MIPS changes for 4.16	2018-02-07 11:22:44 -08:00
mti-malta	MIPS: Set I/O port resource types correctly	2017-12-18 23:07:45 -06:00
net	bpf, mips64: remove unneeded zero check from div/mod with k	2018-01-26 16:42:06 -08:00
netlogic	mips/netlogic: remove swiotlb support	2018-01-15 09:35:59 +01:00
oprofile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
paravirt	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
pci	MIPS changes for 4.15	2017-11-15 11:36:08 -08:00
pic32	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
pistachio	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
pmcs-msp71xx	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
pnx833x	mtd: nand: Rename nand.h into rawnand.h	2017-08-13 10:11:49 +02:00
power	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
ralink	MIPS: ralink: Fix booting on MT7621	2018-03-22 00:06:30 +00:00
rb532	MIPS: RB532: Avoid undefined mac_pton without GENERIC_NET_UTILS	2018-01-10 16:39:03 +01:00
sgi-ip22	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-13 17:56:58 -08:00
sgi-ip27	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
sgi-ip32	mips: ip22/32: Convert timers to use timer_setup()	2017-11-02 15:50:36 -07:00
sibyte	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
sni	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
tools	Update MIPS email addresses	2017-11-03 09:02:30 -07:00
txx9	MIPS: TXx9: use IS_BUILTIN() for CONFIG_LEDS_CLASS	2018-02-05 13:32:17 +00:00
vdso	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
vr41xx	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Kbuild	MIPS: Disable Werror when W= is set	2017-04-10 11:56:07 +02:00
Kbuild.platforms	MIPS: Xilfpga: Switch to using generic defconfigs	2017-11-08 22:54:14 +00:00
Kconfig	Kbuild updates for v4.16 (2nd)	2018-02-09 19:32:41 -08:00
Kconfig.debug	MIPS: Fix CPS SMP NS16550 UART defaults	2018-01-10 16:44:49 +01:00
Makefile	MIPS: XPA: Use XPA instructions in assembly	2018-01-22 20:51:55 +00:00
Makefile.postlink	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00