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linux-next/drivers/soc/fsl/qbman
Laurentiu Tudor 5a1eb8b954 soc: fsl: qman_portals: defer probe after qman's probe
Defer probe of qman portals after qman probing. This fixes the crash
below, seen on NXP LS1043A SoCs:

Unable to handle kernel NULL pointer dereference at virtual address
0000000000000004
Mem abort info:
  ESR = 0x96000004
  Exception class = DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
Data abort info:
  ISV = 0, ISS = 0x00000004
  CM = 0, WnR = 0
[0000000000000004] user address but active_mm is swapper
Internal error: Oops: 96000004 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Not tainted
4.18.0-rc1-next-20180622-00200-g986f5c179185 #9
Hardware name: LS1043A RDB Board (DT)
pstate: 80000005 (Nzcv daif -PAN -UAO)
pc : qman_set_sdest+0x74/0xa0
lr : qman_portal_probe+0x22c/0x470
sp : ffff00000803bbc0
x29: ffff00000803bbc0 x28: 0000000000000000
x27: ffff0000090c1b88 x26: ffff00000927cb68
x25: ffff00000927c000 x24: ffff00000927cb60
x23: 0000000000000000 x22: 0000000000000000
x21: ffff0000090e9000 x20: ffff800073b5c810
x19: ffff800027401298 x18: ffffffffffffffff
x17: 0000000000000001 x16: 0000000000000000
x15: ffff0000090e96c8 x14: ffff80002740138a
x13: ffff0000090f2000 x12: 0000000000000030
x11: ffff000008f25000 x10: 0000000000000000
x9 : ffff80007bdfd2c0 x8 : 0000000000004000
x7 : ffff80007393cc18 x6 : 0040000000000001
x5 : 0000000000000000 x4 : ffffffffffffffff
x3 : 0000000000000004 x2 : ffff00000927c900
x1 : 0000000000000000 x0 : 0000000000000004
Process swapper/0 (pid: 1, stack limit = 0x(____ptrval____))
Call trace:
 qman_set_sdest+0x74/0xa0
 platform_drv_probe+0x50/0xa8
 driver_probe_device+0x214/0x2f8
 __driver_attach+0xd8/0xe0
 bus_for_each_dev+0x68/0xc8
 driver_attach+0x20/0x28
 bus_add_driver+0x108/0x228
 driver_register+0x60/0x110
 __platform_driver_register+0x40/0x48
 qman_portal_driver_init+0x20/0x84
 do_one_initcall+0x58/0x168
 kernel_init_freeable+0x184/0x22c
 kernel_init+0x10/0x108
 ret_from_fork+0x10/0x18
Code: f9400443 11001000 927e4800 8b000063 (b9400063)
---[ end trace 4f6d50489ecfb930 ]---
Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2018-10-01 17:47:43 -05:00
..
bman_ccsr.c soc: fsl: qbman: add APIs to retrieve the probing status 2018-09-27 15:43:35 -05:00
bman_portal.c soc/fsl/qbman: Rework portal mapping calls for ARM/PPC 2017-09-22 13:33:07 -05:00
bman_priv.h soc/fsl/qbman: Rework portal mapping calls for ARM/PPC 2017-09-22 13:33:07 -05:00
bman_test_api.c soc/bman: Add self-test for BMan driver 2016-09-25 02:38:59 -05:00
bman_test.c soc/bman: Add self-test for BMan driver 2016-09-25 02:38:59 -05:00
bman_test.h soc/bman: Add self-test for BMan driver 2016-09-25 02:38:59 -05:00
bman.c soc/fsl/qbman: different register offsets on ARM 2017-09-22 13:33:07 -05:00
dpaa_sys.c soc/fsl/qbman: Add common routine for QBMan private allocations 2017-09-22 13:33:07 -05:00
dpaa_sys.h soc/fsl/qbman: Add missing headers on ARM 2017-09-22 13:33:07 -05:00
Kconfig soc: fsl: cleanup Kconfig menu 2018-07-24 16:19:16 -05:00
Makefile ARM: SoC driver updates for v4.15 2017-11-16 16:05:01 -08:00
qman_ccsr.c soc: fsl: qbman: add APIs to retrieve the probing status 2018-09-27 15:43:35 -05:00
qman_portal.c soc: fsl: qman_portals: defer probe after qman's probe 2018-10-01 17:47:43 -05:00
qman_priv.h soc/fsl/qbman: add QMAN_REV32 2017-09-22 13:33:07 -05:00
qman_test_api.c soc/qman: Handle endianness of h/w descriptors 2016-11-23 21:01:25 -06:00
qman_test_stash.c soc/fsl/qman: test: use DEFINE_SPINLOCK() 2016-12-09 23:08:52 -06:00
qman_test.c soc/qman: Add self-test for QMan driver 2016-09-25 02:39:00 -05:00
qman_test.h soc/fsl/qbman: Use shared-dma-pool for QMan private memory allocations 2017-09-22 13:33:07 -05:00
qman.c soc: fsl: qbman: qman: avoid allocating from non existing gen_pool 2018-09-25 13:57:25 -07:00