ARM: sunxi: "Unbalanced enable for IRQ 0" warning on A20

[Andreas Färber]

Hi,

Just encountered the following warning on Cubietruck with v4.12-rc7.
I'm assuming this is related to deferred module probing and some
probe/remove mismatch?

Regards,
Andreas

[   33.683928] thermal thermal_zone0: failed to read out thermal zone (-110)
[   33.690870] ------------[ cut here ]------------
[   33.690901] WARNING: CPU: 0 PID: 161 at ../kernel/irq/manage.c:529
__enable_irq+0x54/0x88
[   33.690905] Unbalanced enable for IRQ 0
[   33.690910] Modules linked in: nls_cp437 vfat fat axp20x_usb_power
axp20x_ac_power axp20x_regulator axp20x_adc sun4i_gpadc_iio(+)
snd_soc_simple_card sun4i_codec snd_soc_spdif_tx
snd_soc_simple_card_utils axp20x_pek industrialio gpio_axp209
snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine snd_pcm realtek
snd_timer dwmac_sunxi axp20x_i2c stmmac_platform ir_lirc_codec sun4i_ts
snd stmmac lirc_dev axp20x nvmem_sunxi_sid brcmfmac sunxi_cir rc_core
sun4i_gpadc nvmem_core soundcore sunxi_wdt sun4i_ss des_generic sunxi
phy_generic musb_hdrc udc_core sun4i_dma uio_pdrv_genirq uio leds_gpio
cpufreq_dt btrfs xor xor_neon zlib_deflate raid6_pq ohci_platform
cfg80211 rfkill brcmutil mmc_block ehci_platform ohci_hcd ehci_hcd
i2c_mv64xxx pwm_sun4i ahci_sunxi libahci_platform usbcore phy_sun4i_usb
extcon_core
[   33.691107]  sunxi_mmc pwrseq_simple mmc_core sg dm_multipath dm_mod
dax scsi_dh_rdac scsi_dh_emc scsi_dh_alua
[   33.691147] CPU: 0 PID: 161 Comm: kworker/0:2 Not tainted
4.12.0-rc7-1.gaec31ef-lpae #1
[   33.691150] Hardware name: Allwinner sun7i (A20) Family
[   33.691166] Workqueue: events deferred_probe_work_func
[   33.691203] [<c044150c>] (unwind_backtrace) from [<c043a568>]
(show_stack+0x20/0x28)
[   33.691223] [<c043a568>] (show_stack) from [<c08079b0>]
(dump_stack+0x94/0xa8)
[   33.691243] [<c08079b0>] (dump_stack) from [<c04799cc>]
(__warn+0xfc/0x114)
[   33.691259] [<c04799cc>] (__warn) from [<c0479a28>]
(warn_slowpath_fmt+0x44/0x4c)
[   33.691277] [<c0479a28>] (warn_slowpath_fmt) from [<c04e0420>]
(__enable_irq+0x54/0x88)
[   33.691293] [<c04e0420>] (__enable_irq) from [<c04e0498>]
(enable_irq+0x44/0x7c)
[   33.691332] [<c04e0498>] (enable_irq) from [<bfb952cc>]
(sun4i_gpadc_read+0x170/0x1d0 [sun4i_gpadc_iio])
[   33.691416] [<bfb952cc>] (sun4i_gpadc_read [sun4i_gpadc_iio]) from
[<bfb95884>] (sun4i_gpadc_temp_read+0x34/0x84 [sun4i_gpadc_iio])
[   33.691446] [<bfb95884>] (sun4i_gpadc_temp_read [sun4i_gpadc_iio])
from [<bfb95900>] (sun4i_gpadc_get_temp+0x2c/0x64 [sun4i_gpadc_iio])
[   33.691473] [<bfb95900>] (sun4i_gpadc_get_temp [sun4i_gpadc_iio])
from [<c0afe208>] (of_thermal_get_temp+0x30/0x40)
[   33.691492] [<c0afe208>] (of_thermal_get_temp) from [<c0afd900>]
(thermal_zone_get_temp+0x58/0x80)
[   33.691510] [<c0afd900>] (thermal_zone_get_temp) from [<c0afad00>]
(thermal_zone_device_update.part.9+0x28/0x1c8)
[   33.691528] [<c0afad00>] (thermal_zone_device_update.part.9) from
[<c0afb374>] (__thermal_cooling_device_register+0x2b0/0x380)
[   33.691544] [<c0afb374>] (__thermal_cooling_device_register) from
[<c0afb48c>] (thermal_of_cooling_device_register+0x18/0x20)
[   33.691560] [<c0afb48c>] (thermal_of_cooling_device_register) from
[<c0b00254>] (__cpufreq_cooling_register+0x354/0x620)
[   33.691574] [<c0b00254>] (__cpufreq_cooling_register) from
[<c0b005a4>] (of_cpufreq_power_cooling_register+0x24/0x2c)
[   33.691598] [<c0b005a4>] (of_cpufreq_power_cooling_register) from
[<bf6890b0>] (cpufreq_ready+0x84/0xd4 [cpufreq_dt])
[   33.691623] [<bf6890b0>] (cpufreq_ready [cpufreq_dt]) from
[<c0b0ec84>] (cpufreq_online+0x594/0x6d4)
[   33.691638] [<c0b0ec84>] (cpufreq_online) from [<c0b0ee70>]
(cpufreq_add_dev+0x88/0xc0)
[   33.691652] [<c0b0ee70>] (cpufreq_add_dev) from [<c09eb324>]
(subsys_interface_register+0x9c/0xd8)
[   33.691669] [<c09eb324>] (subsys_interface_register) from
[<c0b0cad4>] (cpufreq_register_driver+0x188/0x25c)
[   33.691688] [<c0b0cad4>] (cpufreq_register_driver) from [<bf689600>]
(dt_cpufreq_probe+0x98/0x1a4 [cpufreq_dt])
[   33.691711] [<bf689600>] (dt_cpufreq_probe [cpufreq_dt]) from
[<c09ef848>] (platform_drv_probe+0x60/0xc0)
[   33.691725] [<c09ef848>] (platform_drv_probe) from [<c09ed22c>]
(driver_probe_device+0x2ec/0x43c)
[   33.691740] [<c09ed22c>] (driver_probe_device) from [<c09ed544>]
(__device_attach_driver+0xb0/0x13c)
[   33.691757] [<c09ed544>] (__device_attach_driver) from [<c09eafa8>]
(bus_for_each_drv+0x54/0xa4)
[   33.691772] [<c09eafa8>] (bus_for_each_drv) from [<c09ecd90>]
(__device_attach+0xc4/0x148)
[   33.691785] [<c09ecd90>] (__device_attach) from [<c09ed628>]
(device_initial_probe+0x1c/0x24)
[   33.691798] [<c09ed628>] (device_initial_probe) from [<c09ec130>]
(bus_probe_device+0x98/0xa0)
[   33.691811] [<c09ec130>] (bus_probe_device) from [<c09ec6fc>]
(deferred_probe_work_func+0x88/0xd0)
[   33.691827] [<c09ec6fc>] (deferred_probe_work_func) from [<c0494bd8>]
(process_one_work+0x208/0x584)
[   33.691844] [<c0494bd8>] (process_one_work) from [<c0495ba4>]
(worker_thread+0x64/0x590)
[   33.691858] [<c0495ba4>] (worker_thread) from [<c049b6b4>]
(kthread+0x170/0x178)
[   33.691876] [<c049b6b4>] (kthread) from [<c0435bc8>]
(ret_from_fork+0x14/0x2c)
[   33.691883] ---[ end trace 80e3e19af97711bd ]---


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