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Sameer Pujar 19c2dd5025 dmaengine: tegra210-dma: free dma controller in remove() 
[ Upstream commit f030e41950 ]

Following kernel panic is seen during DMA driver unload->load sequence
==========================================================================
Unable to handle kernel paging request at virtual address ffffff8001198880
Internal error: Oops: 86000007 [#1] PREEMPT SMP
CPU: 0 PID: 5907 Comm: HwBinder:4123_1 Tainted: G C 4.9.128-tegra-g065839f
Hardware name: galen (DT)
task: ffffffc3590d1a80 task.stack: ffffffc3d0678000
PC is at 0xffffff8001198880
LR is at of_dma_request_slave_channel+0xd8/0x1f8
pc : [<ffffff8001198880>] lr : [<ffffff8008746f30>] pstate: 60400045
sp : ffffffc3d067b710
x29: ffffffc3d067b710 x28: 000000000000002f
x27: ffffff800949e000 x26: ffffff800949e750
x25: ffffff800949e000 x24: ffffffbefe817d84
x23: ffffff8009f77cb0 x22: 0000000000000028
x21: ffffffc3ffda49c8 x20: 0000000000000029
x19: 0000000000000001 x18: ffffffffffffffff
x17: 0000000000000000 x16: ffffff80082b66a0
x15: ffffff8009e78250 x14: 000000000000000a
x13: 0000000000000038 x12: 0101010101010101
x11: 0000000000000030 x10: 0101010101010101
x9 : fffffffffffffffc x8 : 7f7f7f7f7f7f7f7f
x7 : 62ff726b6b64622c x6 : 0000000000008064
x5 : 6400000000000000 x4 : ffffffbefe817c44
x3 : ffffffc3ffda3e08 x2 : ffffff8001198880
x1 : ffffffc3d48323c0 x0 : ffffffc3d067b788

Process HwBinder:4123_1 (pid: 5907, stack limit = 0xffffffc3d0678028)
Call trace:
[<ffffff8001198880>] 0xffffff8001198880
[<ffffff80087459f8>] dma_request_chan+0x50/0x1f0
[<ffffff8008745bc0>] dma_request_slave_channel+0x28/0x40
[<ffffff8001552c44>] tegra_alt_pcm_open+0x114/0x170
[<ffffff8008d65fa4>] soc_pcm_open+0x10c/0x878
[<ffffff8008d18618>] snd_pcm_open_substream+0xc0/0x170
[<ffffff8008d1878c>] snd_pcm_open+0xc4/0x240
[<ffffff8008d189e0>] snd_pcm_playback_open+0x58/0x80
[<ffffff8008cfc6d4>] snd_open+0xb4/0x178
[<ffffff8008250628>] chrdev_open+0xb8/0x1d0
[<ffffff8008246fdc>] do_dentry_open+0x214/0x318
[<ffffff80082485d0>] vfs_open+0x58/0x88
[<ffffff800825bce0>] do_last+0x450/0xde0
[<ffffff800825c718>] path_openat+0xa8/0x368
[<ffffff800825dd84>] do_filp_open+0x8c/0x110
[<ffffff8008248a74>] do_sys_open+0x164/0x220
[<ffffff80082b66dc>] compat_SyS_openat+0x3c/0x50
[<ffffff8008083040>] el0_svc_naked+0x34/0x38
---[ end trace 67e6d544e65b5145 ]---
Kernel panic - not syncing: Fatal exception
==========================================================================

In device probe(), of_dma_controller_register() registers DMA controller.
But when driver is removed, this is not freed. During driver reload this
results in data abort and kernel panic. Add of_dma_controller_free() in
driver remove path to fix the issue.

Fixes: f46b195799 ("dmaengine: tegra-adma: Add support for Tegra210 ADMA")
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-05-31 06:46:08 -07:00
..
accessibility
acpi ACPI: PM: Set enable_for_wake for wakeup GPEs during suspend-to-idle 2019-05-22 07:37:41 +02:00
amba
android binder: fix handling of misaligned binder object 2019-05-02 09:58:56 +02:00
ata libata: fix using DMA buffers on stack 2019-05-04 09:20:21 +02:00
atm atm: he: fix sign-extension overflow on large shift 2019-02-27 10:08:57 +01:00
auxdisplay auxdisplay: hd44780: Fix memory leak on ->remove() 2019-04-20 09:15:55 +02:00
base driver core: Postpone DMA tear-down until after devres release for probe failure 2019-05-25 18:23:47 +02:00
bcma
block brd: re-enable __GFP_HIGHMEM in brd_insert_page() 2019-05-25 18:23:24 +02:00
bluetooth Bluetooth: mediatek: fix up an error path to restore bdev->tx_state 2019-05-08 07:21:52 +02:00
bus
cdrom cdrom: Fix race condition in cdrom_sysctl_register 2019-04-05 22:33:10 +02:00
char ipmi:ssif: compare block number correctly for multi-part return messages 2019-05-22 07:37:43 +02:00
clk clk: sunxi-ng: nkmp: Avoid GENMASK(-1, 0) 2019-05-25 18:23:42 +02:00
clocksource clocksource/drivers/oxnas: Fix OX820 compatible 2019-05-16 19:41:21 +02:00
connector connector: fix unsafe usage of ->real_parent 2019-03-19 13:12:38 +01:00
cpufreq x86/cpu: Sanitize FAM6_ATOM naming 2019-05-14 19:17:53 +02:00
cpuidle cpuidle: big.LITTLE: fix refcount leak 2019-02-12 19:47:08 +01:00
crypto crypto: vmx - CTR: always increment IV as quadword 2019-05-31 06:46:01 -07:00
dax mm/huge_memory: fix vmf_insert_pfn_{pmd, pud}() crash, handle unaligned addresses 2019-05-22 07:37:40 +02:00
dca
devfreq
dio
dma dmaengine: tegra210-dma: free dma controller in remove() 2019-05-31 06:46:08 -07:00
dma-buf
edac x86/cpu: Sanitize FAM6_ATOM naming 2019-05-14 19:17:53 +02:00
eisa
extcon
firewire
firmware efi: Fix debugobjects warning on 'efi_rts_work' 2019-05-08 07:21:44 +02:00
fmc
fpga fpga: altera-cvp: fix 'bad IO access' on x86_64 2019-02-12 19:46:59 +01:00
fsi fsi: master-ast-cf: select GENERIC_ALLOCATOR 2018-12-17 09:24:35 +01:00
gnss gnss: sirf: fix premature wakeup interrupt enable 2019-03-10 07:17:21 +01:00
gpio gpio: mxc: add check to return defer probe if clock tree NOT ready 2019-05-08 07:21:53 +02:00
gpu drm/sun4i: Unbind components before releasing DRM and memory 2019-05-16 19:41:25 +02:00
hid HID: input: add mapping for "Toggle Display" key 2019-05-16 19:41:19 +02:00
hsi
hv Drivers: hv: vmbus: Remove the undesired put_cpu_ptr() in hv_synic_cleanup() 2019-05-10 17:54:04 +02:00
hwmon hwmon: (pwm-fan) Disable PWM if fetching cooling data fails 2019-05-16 19:41:18 +02:00
hwspinlock
hwtracing intel_th: msu: Fix single mode with IOMMU 2019-05-25 18:23:26 +02:00
i2c i2c: i2c-stm32f7: Fix SDADEL minimum formula 2019-05-08 07:21:55 +02:00
ide ide: fix a typo in the settings proc file name 2019-01-31 08:14:42 +01:00
idle x86/cpu: Sanitize FAM6_ATOM naming 2019-05-14 19:17:53 +02:00
iio iio: adc: xilinx: prevent touching unclocked h/w on remove 2019-05-16 19:41:19 +02:00
infiniband IB/hfi1: Fix WQ_MEM_RECLAIM warning 2019-05-31 06:46:07 -07:00
input Input: synaptics-rmi4 - fix possible double free 2019-05-16 19:41:25 +02:00
iommu iommu/tegra-smmu: Fix invalid ASID bits on Tegra30/114 2019-05-25 18:23:30 +02:00
ipack
irqchip MIPS: perf: ath79: Fix perfcount IRQ assignment 2019-05-16 19:41:24 +02:00
isdn isdn: bas_gigaset: use usb_fill_int_urb() properly 2019-05-16 19:41:31 +02:00
leds leds: trigger: netdev: use memcpy in device_name_store 2019-05-04 09:20:22 +02:00
lightnvm lightnvm: pblk: add lock protection to list operations 2019-02-12 19:47:08 +01:00
macintosh
mailbox mailbox: bcm-flexrm-mailbox: Fix FlexRM ring flush timeout issue 2019-03-23 20:09:49 +01:00
mcb
md md/raid: raid5 preserve the writeback action after the parity check 2019-05-25 18:23:47 +02:00
media media: vivid: use vfree() instead of kfree() for dev->bitmap_cap 2019-05-31 06:46:04 -07:00
memory memory: tegra: Fix integer overflow on tick value calculation 2019-05-25 18:23:32 +02:00
memstick memstick: Prevent memstick host from getting runtime suspended during card detection 2019-02-12 19:47:10 +01:00
message
mfd mfd: twl-core: Disable IRQ while suspended 2019-05-08 07:21:48 +02:00
misc lkdtm: Add tests for NULL pointer dereference 2019-04-20 09:16:04 +02:00
mmc mmc: core: Verify SD bus width 2019-05-31 06:46:07 -07:00
mtd mtd: spi-nor: intel-spi: Avoid crossing 4K address boundary on read/write 2019-05-22 07:37:41 +02:00
mux
net cxgb4: Fix error path in cxgb4_init_module 2019-05-31 06:46:06 -07:00
nfc spi: ST ST95HF NFC: declare missing of table 2019-05-16 19:41:25 +02:00
ntb
nubus
nvdimm libnvdimm/pmem: Bypass CONFIG_HARDENED_USERCOPY overhead 2019-05-31 06:46:01 -07:00
nvme nvme-fc: correct csn initialization and increments on error 2019-05-10 17:54:09 +02:00
nvmem
of of: overlay: do not duplicate properties from overlay for new nodes 2019-02-06 17:30:16 +01:00
opp OPP: Use opp_table->regulators to verify no regulator case 2019-02-12 19:47:08 +01:00
oprofile
parisc parisc: Skip registering LED when running in QEMU 2019-05-25 18:23:23 +02:00
parport parport_pc: fix find_superio io compare code, should use equal test. 2019-03-23 20:10:05 +01:00
pci PCI: Fix issue with "pci=disable_acs_redir" parameter being ignored 2019-05-25 18:23:43 +02:00
pcmcia
perf perf/aux: Make perf_event accessible to setup_aux() 2019-04-05 22:33:11 +02:00
phy phy: ti-pipe3: fix missing bit-wise or operator when assigning val 2019-05-25 18:23:27 +02:00
pinctrl pinctrl: core: make sure strcmp() doesn't get a null parameter 2019-04-20 09:16:01 +02:00
platform platform/x86: dell-laptop: fix rfkill functionality 2019-05-16 19:41:18 +02:00
pnp
power power: supply: sysfs: prevent endless uevent loop with CONFIG_POWER_SUPPLY_DEBUG 2019-05-25 18:23:44 +02:00
powercap x86/cpu: Sanitize FAM6_ATOM naming 2019-05-14 19:17:53 +02:00
pps
ps3
ptp ptp: Fix pass zero to ERR_PTR() in ptp_clock_register 2019-02-12 19:47:01 +01:00
pwm
rapidio
ras
regulator regulator: act8865: Fix act8600_sudcdc_voltage_ranges setting 2019-04-05 22:33:15 +02:00
remoteproc
reset reset: meson-audio-arb: Fix missing .owner setting of reset_controller_dev 2019-05-08 07:21:47 +02:00
rpmsg
rtc rtc: da9063: set uie_unsupported when relevant 2019-05-08 07:21:49 +02:00
s390 s390: ctcm: fix ctcm_new_device error return code 2019-05-16 19:41:24 +02:00
sbus drivers/sbus/char: add of_node_put() 2018-12-21 14:15:17 +01:00
scsi Revert "scsi: sd: Keep disk read-only when re-reading partition" 2019-05-31 06:46:01 -07:00
sfi
sh
siox
slimbus slimbus: ngd: mark PM functions as __maybe_unused 2018-12-19 19:19:49 +01:00
sn
soc soc: sunxi: Fix missing dependency on REGMAP_MMIO 2019-05-10 17:54:10 +02:00
soundwire
spi spi: pxa2xx: Setup maximum supported DMA transfer length 2019-03-23 20:09:57 +01:00
spmi
ssb ssb: Fix possible NULL pointer dereference in ssb_host_pcmcia_exit 2019-05-31 06:46:04 -07:00
staging media: imx: Clear fwnode link struct for each endpoint iteration 2019-05-25 18:23:28 +02:00
target scsi: target/iscsi: Avoid iscsit_release_commands_from_conn() deadlock 2019-03-23 20:09:59 +01:00
tc
tee tee: optee: avoid possible double list_del() 2019-02-12 19:47:08 +01:00
thermal x86/cpu: Sanitize FAM6_ATOM naming 2019-05-14 19:17:53 +02:00
thunderbolt thunderbolt: Prevent root port runtime suspend during NVM upgrade 2018-12-17 09:24:36 +01:00
tty tty: Don't force RISCV SBI console as preferred console 2019-05-22 07:37:43 +02:00
uio uio: Fix an Oops on load 2018-11-27 16:13:09 +01:00
usb usb: typec: Fix unchecked return value 2019-05-16 19:41:26 +02:00
uwb
vfio vfio/pci: use correct format characters 2019-05-08 07:21:49 +02:00
vhost vhost: reject zero size iova range 2019-04-27 09:36:31 +02:00
video fbdev: fix WARNING in __alloc_pages_nodemask bug 2019-05-31 06:46:04 -07:00
virt drivers/virt/fsl_hypervisor.c: prevent integer overflow in ioctl 2019-05-16 19:41:31 +02:00
virtio virtio_pci: fix a NULL pointer reference in vp_del_vqs 2019-05-10 17:54:08 +02:00
visorbus
vlynq
vme
w1 USB: w1 ds2490: Fix bug caused by improper use of altsetting array 2019-05-08 07:21:43 +02:00
watchdog watchdog: mt7621_wdt/rt2880_wdt: Fix compilation problem 2019-02-27 10:08:52 +01:00
xen fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock 2019-05-08 07:21:51 +02:00
zorro
Kconfig
Makefile