Messages in this thread | | | From | Jeremy Linton <> | Subject | [PATCH v2 0/2] Hi655x: mfd/pmic: regulator: Correct dependencies | Date | Mon, 3 Apr 2017 00:28:41 -0500 |
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In an environment where the hi655x pmic is being built as a standalone module, it fails to automatically load resulting in boot failures, machine hangs, etc. First we correct this by setting an appropriate module dependency. Then we bump the module use count on the mfd/pmic driver so that it cannot be unloaded when in use. This avoids an unload warning and crashes like:
Unable to handle kernel paging request at virtual address ffff800078fc5c78 pgd = ffff00000a150000 *pgd=000000007ffc0003, *pud=000000007ffc0003, *pmd=00e8000060000711 Internal error: Oops: 8600000e [#1] SMP ... [<ffff800078fc5c78>] 0xffff800078fc5c78 [<ffff0000086248f8>] regulator_set_voltage_sel_regmap+0x50/0x98 [<ffff00000861e830>] _regulator_do_set_voltage+0x4c8/0x7c0 [<ffff000008620804>] regulator_set_voltage_unlocked+0xc4/0x258 [<ffff0000086209d4>] regulator_set_voltage+0x3c/0x70 [<ffff000000af1b30>] mmc_regulator_set_ocr+0x48/0x100 [mmc_core] [<ffff000000c93da8>] dw_mci_set_ios+0x1e8/0x280 [dw_mmc] [<ffff000000af483c>] mmc_set_initial_state+0x84/0xf8 [mmc_core] [<ffff000000af490c>] mmc_power_up.part.13+0x5c/0x1f8 [mmc_core] [<ffff000000af5c20>] mmc_rescan+0x270/0x3b0 [mmc_core] [<ffff0000080f3a14>] process_one_work+0x264/0x7c0 [<ffff0000080f3fc4>] worker_thread+0x54/0x430 [<ffff0000080fc5dc>] kthread+0x104/0x130 [<ffff000008083380>] ret_from_fork+0x10/0x50
V1->V2: Change from a module post call to a module_device_table.
Jeremy Linton (2): regulator: hi655x: Describe consumed platform device regulator: hi655x: Bump parent pmic module use count
drivers/regulator/hi655x-regulator.c | 33 +++++++++++++++++++++++++++++++-- 1 file changed, 31 insertions(+), 2 deletions(-)
-- 2.10.2
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