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Code
f7fbcf4637
linux/arch/powerpc
History
Jason A. Donenfeld 8875028265 powerpc/powernv: delay rng platform device creation until later in boot 
The platform device for the rng must be created much later in boot.
Otherwise it tries to connect to a parent that doesn't yet exist,
resulting in this splat:

  [    0.000478] kobject: '(null)' ((____ptrval____)): is not initialized, yet kobject_get() is being called.
  [    0.002925] [c000000002a0fb30] [c00000000073b0bc] kobject_get+0x8c/0x100 (unreliable)
  [    0.003071] [c000000002a0fba0] [c00000000087e464] device_add+0xf4/0xb00
  [    0.003194] [c000000002a0fc80] [c000000000a7f6e4] of_device_add+0x64/0x80
  [    0.003321] [c000000002a0fcb0] [c000000000a800d0] of_platform_device_create_pdata+0xd0/0x1b0
  [    0.003476] [c000000002a0fd00] [c00000000201fa44] pnv_get_random_long_early+0x240/0x2e4
  [    0.003623] [c000000002a0fe20] [c000000002060c38] random_init+0xc0/0x214

This patch fixes the issue by doing the platform device creation inside
of machine_subsys_initcall.

Fixes: f3eac42665 ("powerpc/powernv: wire up rng during setup_arch")
Cc: stable@vger.kernel.org
Reported-by: Sachin Sant <sachinp@linux.ibm.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Tested-by: Sachin Sant <sachinp@linux.ibm.com>
[mpe: Change "of node" to "platform device" in change log]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220630121654.1939181-1-Jason@zx2c4.com
2022-07-04 21:11:47 +10:00
..
boot powerpc updates for 5.19 2022-05-28 11:27:17 -07:00
configs eth: de4x5: remove support for Generic DECchip & DIGITAL EtherWORKS PCI/EISA 2022-05-23 11:43:51 +01:00
crypto powerpc: fix typos in comments 2022-05-05 22:12:44 +10:00
include powerpc/bpf: Fix use of user_pt_regs in uapi 2022-06-29 20:43:04 +10:00
kernel powerpc/prom_init: Fix kernel config grep 2022-06-24 13:47:26 +10:00
kexec powerpc/kasan: Mark more real-mode code as not to be instrumented 2022-05-29 10:30:42 +10:00
kvm powerpc: Fix all occurences of "the the" 2022-05-22 15:59:43 +10:00
lib powerpc updates for 5.19 2022-05-28 11:27:17 -07:00
math-emu
mm powerpc/memhotplug: Add add_pages override for PPC 2022-06-29 20:43:16 +10:00
net powerpc/inst: Remove PPC_INST_BL 2022-05-22 15:58:27 +10:00
perf powerpc/perf: Fix the threshold compare group constraint for power9 2022-05-22 15:58:30 +10:00
platforms powerpc/powernv: delay rng platform device creation until later in boot 2022-07-04 21:11:47 +10:00
purgatory
sysdev powerpc/xive/spapr: correct bitmap allocation size 2022-06-24 12:40:38 +10:00
tools powerpc/64: Add UADDR64 relocation support 2022-03-09 21:47:53 +11:00
xmon More power management updates for 5.19-rc1 2022-05-30 11:37:26 -07:00
Kbuild kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00
Kconfig powerpc/memhotplug: Add add_pages override for PPC 2022-06-29 20:43:16 +10:00
Kconfig.debug powerpc: Book3S 64-bit outline-only KASAN support 2022-05-22 15:58:29 +10:00
Makefile powerpc updates for 5.19 2022-05-28 11:27:17 -07:00
Makefile.postlink