system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-09-06 18:01:05 +00:00
Code Issues Packages Projects Releases Wiki Activity
linux/arch
History
Rafał Miłecki d5ea019f8a
Revert "MIPS: BCM47XX: Enable 74K Core ExternalSync for PCIe erratum" 
This reverts commit 2a027b47db ("MIPS: BCM47XX: Enable 74K Core
ExternalSync for PCIe erratum").

Enabling ExternalSync caused a regression for BCM4718A1 (used e.g. in
Netgear E3000 and ASUS RT-N16): it simply hangs during PCIe
initialization. It's likely that BCM4717A1 is also affected.

I didn't notice that earlier as the only BCM47XX devices with PCIe I
own are:
1) BCM4706 with 2 x 14e4:4331
2) BCM4706 with 14e4:4360 and 14e4:4331
it appears that BCM4706 is unaffected.

While BCM5300X-ES300-RDS.pdf seems to document that erratum and its
workarounds (according to quotes provided by Tokunori) it seems not even
Broadcom follows them.

According to the provided info Broadcom should define CONF7_ES in their
SDK's mipsinc.h and implement workaround in the si_mips_init(). Checking
both didn't reveal such code. It *could* mean Broadcom also had some
problems with the given workaround.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Reported-by: Michael Marley <michael@michaelmarley.com>
Patchwork: https://patchwork.linux-mips.org/patch/20032/
URL: https://bugs.openwrt.org/index.php?do=details&task_id=1688
Cc: Tokunori Ikegami <ikegami@allied-telesis.co.jp>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
2018-07-27 10:07:32 -07:00
..
alpha alpha: fix osf_wait4() breakage 2018-07-22 11:51:30 -07:00
arc ARC fixes for 4.18-rc6 2018-07-20 11:33:22 -07:00
arm ARM: SoC fixes for 4.18-rc 2018-07-21 17:27:42 -07:00
arm64 arm64: neon: Fix function may_use_simd() return error status 2018-07-11 17:02:02 +01:00
c6x
h8300
hexagon
ia64 mm: make vm_area_alloc() initialize core fields 2018-07-21 15:24:03 -07:00
m68k m68k: fix "bad page state" oops on ColdFire boot 2018-07-02 10:05:13 +10:00
microblaze Microblaze patches for 4.18-rc3 2018-06-27 09:49:30 -07:00
mips Revert "MIPS: BCM47XX: Enable 74K Core ExternalSync for PCIe erratum" 2018-07-27 10:07:32 -07:00
nds32 nds32: fix build error "relocation truncated to fit: R_NDS32_25_PCREL_RELA" when 2018-07-05 16:13:47 +08:00
nios2
openrisc openrisc: entry: Fix delay slot exception detection 2018-07-01 16:48:24 +09:00
parisc parisc: Build kernel without -ffunction-sections 2018-06-29 17:27:20 +02:00
powerpc powerpc/powernv: Fix save/restore of SPRG3 on entry/exit from stop (idle) 2018-07-18 20:40:17 +10:00
riscv RISC-V: Fix the rv32i kernel build 2018-07-04 14:12:53 -07:00
s390 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2018-07-06 09:14:34 -07:00
sh
sparc
um
unicore32
x86 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-07-21 17:25:49 -07:00
xtensa
.gitignore
Kconfig