kgene's for-next branch broken, and boot regressions

["Andreas Färber" <afaerber@suse.de>]

Hi Kukjin,

Are you aware that `make dtbs` fails on your for-next branch (4533046)?

  DTC     arch/arm/boot/dts/exynos5420-peach-pit.dtb
arch/arm/boot/dts/exynos5420-peach-pit.dts:447:33: fatal error:
cros-ec-keyboard.dtsi: No such file or directory
 #include "cros-ec-keyboard.dtsi"
                                 ^
compilation terminated.
scripts/Makefile.lib:273: recipe for target
'arch/arm/boot/dts/exynos5420-peach-pit.dtb' failed
make[1]: *** [arch/arm/boot/dts/exynos5420-peach-pit.dtb] Error 1
arch/arm/Makefile:314: recipe for target 'dtbs' failed
make: *** [dtbs] Error 2

On https://patchwork.kernel.org/patch/4297431/ Doug had pointed out that
a topic branch merge would be needed for cros-ec-keyboard.dtsi (which I
also pointed out for my spring series). Can you please fix this through
some merge? Your affected branch is v3.17-next/dt-samsung with "ARM:
dts: Add cros_ec to exynos5420-peach-pit and exynos5800-peach-pi".
There's a topic branch in the Tegra tree:
http://git.kernel.org/cgit/linux/kernel/git/tegra/linux.git/log/?h=for-3.17/dt-cros-ec-kbd
and it's been merged into arm-soc recently.
https://git.kernel.org/cgit/linux/kernel/git/arm/arm-soc.git/tree/arch/arm/boot/dts?h=for-next


Also, I've run into some boot regressions:

On the Arndale Octa (5420) I see an asynchronous external abort on
serial console when systemd gets started.

http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg34680.html

On the Spring Chromebook (5250) the screen goes dark after a few lines,
and USB is not initialized. Thus unclear to me why.

On the ODROID-XU (with local patches based on smdk5410) I get the
following with earlyprintk:

Uncompressing Linux... done, booting the kernel.
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 3.16.0-rc6+ (andreas@droide) (gcc version
4.8.2 20140404 [gcc-4_8-branch revision 209122] (SUSE Linux) ) #2 SMP
PREEMPT Sun Jul 27 02:31:31 CEST 2014
[    0.000000] CPU: ARMv7 Processor [412fc0f3] revision 3 (ARMv7),
cr=30c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction
cache
[    0.000000] Machine model: ODROID-XU based on EXYNOS5410
[    0.000000] bootconsole [earlycon0] enabled
[    0.000000] Forcing write-allocate cache policy for SMP
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] Running under secure firmware.
[    0.000000] PERCPU: Embedded 7 pages/cpu @ee7b3000 s7872 r8192 d12608
u32768
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.
Total pages: 522256
[    0.000000] Kernel command line: console=ttySAC2,115200n8 earlyprintk
root=/dev/mmcblk0p2 rootfstype=ext4 rw rootwait
[    0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288
bytes)
[    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144
bytes)
[    0.000000] Memory: 2070984K/2095104K available (4364K kernel code,
271K rwdata, 1420K rodata, 271K init, 283K bss, 24120K reserved,
1316864K highmem)
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xffc00000 - 0xffe00000   (2048 kB)
[    0.000000]     vmalloc : 0xf0000000 - 0xff000000   ( 240 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xef800000   ( 760 MB)
[    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
[    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
[    0.000000]       .text : 0xc0008000 - 0xc05ae384   (5785 kB)
[    0.000000]       .init : 0xc05af000 - 0xc05f2ec0   ( 272 kB)
[    0.000000]       .data : 0xc05f4000 - 0xc0637d80   ( 272 kB)
[    0.000000]        .bss : 0xc0637d8c - 0xc067eb00   ( 284 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.000000] Preemptible hierarchical RCU implementation.
[    0.000000]  RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=4.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
[    0.000000] NR_IRQS:16 nr_irqs:16 16
[    0.000000] GIC physical location is 0x10481000
[    0.000000] Kernel panic - not syncing: failed to find exynos pmu
register
[    0.000000]
[    0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.16.0-rc6+ #2
[    0.000000] [<c0022214>] (unwind_backtrace) from [<c001f3b4>]
(show_stack+0x10/0x14)
[    0.000000] [<c001f3b4>] (show_stack) from [<c04204d4>]
(dump_stack+0x80/0xc0)
[    0.000000] [<c04204d4>] (dump_stack) from [<c041d9a4>]
(panic+0xa4/0x200)
[    0.000000] [<c041d9a4>] (panic) from [<c05b745c>]
(exynos_reserve+0x0/0x4c)
[    0.000000] [<c05b745c>] (exynos_reserve) from [<00000000>] (  (null))
[    0.000000] ---[ end Kernel panic - not syncing: failed to find
exynos pmu register
[    0.000000]

Reverting "ARM: EXYNOS: Refactored code for using PMU address via DT"
and "ARM: EXYNOS: Add support for mapping PMU base address via DT" fixed
the latter.

Anyone know what might cause the others and how to fix?

Thanks,
Andreas

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