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577e2a9dfc
As msm_drm_uninit() is called from the msm_drm_init() error path,
additional care should be necessary as not to call the free_irq() for
the IRQ that was not requested before (because an error occured earlier
than the request_irq() call).
This fixed the issue reported with the following backtrace:
[ 8.571329] Trying to free already-free IRQ 187
[ 8.571339] WARNING: CPU: 0 PID: 76 at kernel/irq/manage.c:1895 free_irq+0x1e0/0x35c
[ 8.588746] Modules linked in: pmic_glink pdr_interface fastrpc qrtr_smd snd_soc_hdmi_codec msm fsa4480 gpu_sched drm_dp_aux_bus qrtr i2c_qcom_geni crct10dif_ce qcom_stats qcom_q6v5_pas drm_display_helper gpi qcom_pil_info drm_kms_helper qcom_q6v5 qcom_sysmon qcom_common qcom_glink_smem qcom_rng mdt_loader qmi_helpers phy_qcom_qmp ufs_qcom typec qnoc_sm8350 socinfo rmtfs_mem fuse drm ipv6
[ 8.624154] CPU: 0 PID: 76 Comm: kworker/u16:2 Not tainted 5.18.0-rc5-next-20220506-00033-g6cee8cab6089-dirty #419
[ 8.624161] Hardware name: Qualcomm Technologies, Inc. SM8350 HDK (DT)
[ 8.641496] Workqueue: events_unbound deferred_probe_work_func
[ 8.647510] pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 8.654681] pc : free_irq+0x1e0/0x35c
[ 8.658454] lr : free_irq+0x1e0/0x35c
[ 8.662228] sp : ffff800008ab3950
[ 8.665642] x29: ffff800008ab3950 x28: 0000000000000000 x27: ffff16350f56a700
[ 8.672994] x26: ffff1635025df080 x25: ffff16350251badc x24: ffff16350251bb90
[ 8.680343] x23: 0000000000000000 x22: 00000000000000bb x21: ffff16350e8f9800
[ 8.687690] x20: ffff16350251ba00 x19: ffff16350cbd5880 x18: ffffffffffffffff
[ 8.695039] x17: 0000000000000000 x16: ffffa2dd12179434 x15: ffffa2dd1431d02d
[ 8.702391] x14: 0000000000000000 x13: ffffa2dd1431d028 x12: 662d79646165726c
[ 8.709740] x11: ffffa2dd13fd2438 x10: 000000000000000a x9 : 00000000000000bb
[ 8.717111] x8 : ffffa2dd13fd23f0 x7 : ffff800008ab3750 x6 : 00000000fffff202
[ 8.724487] x5 : ffff16377e870a18 x4 : 00000000fffff202 x3 : ffff735a6ae1b000
[ 8.731851] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff1635015f8000
[ 8.739217] Call trace:
[ 8.741755] free_irq+0x1e0/0x35c
[ 8.745198] msm_drm_uninit.isra.0+0x14c/0x294 [msm]
[ 8.750548] msm_drm_bind+0x28c/0x5d0 [msm]
[ 8.755081] try_to_bring_up_aggregate_device+0x164/0x1d0
[ 8.760657] __component_add+0xa0/0x170
[ 8.764626] component_add+0x14/0x20
[ 8.768337] dp_display_probe+0x2a4/0x464 [msm]
[ 8.773242] platform_probe+0x68/0xe0
[ 8.777043] really_probe.part.0+0x9c/0x28c
[ 8.781368] __driver_probe_device+0x98/0x144
[ 8.785871] driver_probe_device+0x40/0x140
[ 8.790191] __device_attach_driver+0xb4/0x120
[ 8.794788] bus_for_each_drv+0x78/0xd0
[ 8.798751] __device_attach+0xdc/0x184
[ 8.802713] device_initial_probe+0x14/0x20
[ 8.807031] bus_probe_device+0x9c/0xa4
[ 8.810991] deferred_probe_work_func+0x88/0xc0
[ 8.815667] process_one_work+0x1d0/0x320
[ 8.819809] worker_thread+0x14c/0x444
[ 8.823688] kthread+0x10c/0x110
[ 8.827036] ret_from_fork+0x10/0x20
Reported-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Fixes:
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|---|---|---|
| .. | ||
| accessibility | ||
| acpi | ||
| amba | ||
| android | ||
| ata | ||
| atm | ||
| auxdisplay | ||
| base | ||
| bcma | ||
| block | ||
| bluetooth | ||
| bus | ||
| cdrom | ||
| char | ||
| clk | ||
| clocksource | ||
| comedi | ||
| connector | ||
| counter | ||
| cpufreq | ||
| cpuidle | ||
| crypto | ||
| cxl | ||
| dax | ||
| dca | ||
| devfreq | ||
| dio | ||
| dma | ||
| dma-buf | ||
| edac | ||
| eisa | ||
| extcon | ||
| firewire | ||
| firmware | ||
| fpga | ||
| fsi | ||
| gnss | ||
| gpio | ||
| gpu | ||
| greybus | ||
| hid | ||
| hsi | ||
| hv | ||
| hwmon | ||
| hwspinlock | ||
| hwtracing | ||
| i2c | ||
| i3c | ||
| idle | ||
| iio | ||
| infiniband | ||
| input | ||
| interconnect | ||
| iommu | ||
| ipack | ||
| irqchip | ||
| isdn | ||
| leds | ||
| macintosh | ||
| mailbox | ||
| mcb | ||
| md | ||
| media | ||
| memory | ||
| memstick | ||
| message | ||
| mfd | ||
| misc | ||
| mmc | ||
| most | ||
| mtd | ||
| mux | ||
| net | ||
| nfc | ||
| ntb | ||
| nubus | ||
| nvdimm | ||
| nvme | ||
| nvmem | ||
| of | ||
| opp | ||
| parisc | ||
| parport | ||
| pci | ||
| pcmcia | ||
| peci | ||
| perf | ||
| phy | ||
| pinctrl | ||
| platform | ||
| pnp | ||
| power | ||
| powercap | ||
| pps | ||
| ps3 | ||
| ptp | ||
| pwm | ||
| rapidio | ||
| ras | ||
| regulator | ||
| remoteproc | ||
| reset | ||
| rpmsg | ||
| rtc | ||
| s390 | ||
| sbus | ||
| scsi | ||
| sh | ||
| siox | ||
| slimbus | ||
| soc | ||
| soundwire | ||
| spi | ||
| spmi | ||
| ssb | ||
| staging | ||
| target | ||
| tc | ||
| tee | ||
| thermal | ||
| thunderbolt | ||
| tty | ||
| uio | ||
| usb | ||
| vdpa | ||
| vfio | ||
| vhost | ||
| video | ||
| virt | ||
| virtio | ||
| visorbus | ||
| vlynq | ||
| vme | ||
| w1 | ||
| watchdog | ||
| xen | ||
| zorro | ||
| Kconfig | ||
| Makefile | ||