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Filename Latest commit message Latest commit date
Li Jun 97224cdc04 usb: dwc3: core: don't trigger runtime pm when remove driver 
commit 266d0493900ac5d6a21cdbe6b1624ed2da94d47a upstream.

No need to trigger runtime pm in driver removal, otherwise if user
disable auto suspend via sys file, runtime suspend may be entered,
which will call dwc3_core_exit() again and there will be clock disable
not balance warning:

[ 2026.820154] xhci-hcd xhci-hcd.0.auto: remove, state 4
[ 2026.825268] usb usb2: USB disconnect, device number 1
[ 2026.831017] xhci-hcd xhci-hcd.0.auto: USB bus 2 deregistered
[ 2026.836806] xhci-hcd xhci-hcd.0.auto: remove, state 4
[ 2026.842029] usb usb1: USB disconnect, device number 1
[ 2026.848029] xhci-hcd xhci-hcd.0.auto: USB bus 1 deregistered
[ 2026.865889] ------------[ cut here ]------------
[ 2026.870506] usb2_ctrl_root_clk already disabled
[ 2026.875082] WARNING: CPU: 0 PID: 731 at drivers/clk/clk.c:958
clk_core_disable+0xa0/0xa8
[ 2026.883170] Modules linked in: dwc3(-) phy_fsl_imx8mq_usb [last
unloaded: dwc3]
[ 2026.890488] CPU: 0 PID: 731 Comm: rmmod Not tainted
5.8.0-rc7-00280-g9d08cca-dirty #245
[ 2026.898489] Hardware name: NXP i.MX8MQ EVK (DT)
[ 2026.903020] pstate: 20000085 (nzCv daIf -PAN -UAO BTYPE=--)
[ 2026.908594] pc : clk_core_disable+0xa0/0xa8
[ 2026.912777] lr : clk_core_disable+0xa0/0xa8
[ 2026.916958] sp : ffff8000121b39a0
[ 2026.920271] x29: ffff8000121b39a0 x28: ffff0000b11f3700
[ 2026.925583] x27: 0000000000000000 x26: ffff0000b539c700
[ 2026.930895] x25: 000001d7e44e1232 x24: ffff0000b76fa800
[ 2026.936208] x23: ffff0000b76fa6f8 x22: ffff800008d01040
[ 2026.941520] x21: ffff0000b539ce00 x20: ffff0000b7105000
[ 2026.946832] x19: ffff0000b7105000 x18: 0000000000000010
[ 2026.952144] x17: 0000000000000001 x16: 0000000000000000
[ 2026.957456] x15: ffff0000b11f3b70 x14: ffffffffffffffff
[ 2026.962768] x13: ffff8000921b36f7 x12: ffff8000121b36ff
[ 2026.968080] x11: ffff8000119e1000 x10: ffff800011bf26d0
[ 2026.973392] x9 : 0000000000000000 x8 : ffff800011bf3000
[ 2026.978704] x7 : ffff800010695d68 x6 : 0000000000000252
[ 2026.984016] x5 : ffff0000bb9881f0 x4 : 0000000000000000
[ 2026.989327] x3 : 0000000000000027 x2 : 0000000000000023
[ 2026.994639] x1 : ac2fa471aa7cab00 x0 : 0000000000000000
[ 2026.999951] Call trace:
[ 2027.002401]  clk_core_disable+0xa0/0xa8
[ 2027.006238]  clk_core_disable_lock+0x20/0x38
[ 2027.010508]  clk_disable+0x1c/0x28
[ 2027.013911]  clk_bulk_disable+0x34/0x50
[ 2027.017758]  dwc3_core_exit+0xec/0x110 [dwc3]
[ 2027.022122]  dwc3_suspend_common+0x84/0x188 [dwc3]
[ 2027.026919]  dwc3_runtime_suspend+0x74/0x9c [dwc3]
[ 2027.031712]  pm_generic_runtime_suspend+0x28/0x40
[ 2027.036419]  genpd_runtime_suspend+0xa0/0x258
[ 2027.040777]  __rpm_callback+0x88/0x140
[ 2027.044526]  rpm_callback+0x20/0x80
[ 2027.048015]  rpm_suspend+0xd0/0x418
[ 2027.051503]  __pm_runtime_suspend+0x58/0xa0
[ 2027.055693]  dwc3_runtime_idle+0x7c/0x90 [dwc3]
[ 2027.060224]  __rpm_callback+0x88/0x140
[ 2027.063973]  rpm_idle+0x78/0x150
[ 2027.067201]  __pm_runtime_idle+0x58/0xa0
[ 2027.071130]  dwc3_remove+0x64/0xc0 [dwc3]
[ 2027.075140]  platform_drv_remove+0x28/0x48
[ 2027.079239]  device_release_driver_internal+0xf4/0x1c0
[ 2027.084377]  driver_detach+0x4c/0xd8
[ 2027.087954]  bus_remove_driver+0x54/0xa8
[ 2027.091877]  driver_unregister+0x2c/0x58
[ 2027.095799]  platform_driver_unregister+0x10/0x18
[ 2027.100509]  dwc3_driver_exit+0x14/0x1408 [dwc3]
[ 2027.105129]  __arm64_sys_delete_module+0x178/0x218
[ 2027.109922]  el0_svc_common.constprop.0+0x68/0x160
[ 2027.114714]  do_el0_svc+0x20/0x80
[ 2027.118031]  el0_sync_handler+0x88/0x190
[ 2027.121953]  el0_sync+0x140/0x180
[ 2027.125267] ---[ end trace 027f4f8189958f1f ]---
[ 2027.129976] ------------[ cut here ]------------

Fixes: fc8bb91bc8 ("usb: dwc3: implement runtime PM")
Cc: <stable@vger.kernel.org>
Signed-off-by: Li Jun <jun.li@nxp.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-05 11:43:28 +01:00
arch perf/x86/amd/ibs: Fix raw sample data accumulation 2020-11-05 11:43:23 +01:00
block block: ratelimit handle_bad_sector() message 2020-10-29 09:58:01 +01:00
certs PKCS#7: Refactor verify_pkcs7_signature() 2019-08-05 18:40:18 -04:00
crypto crypto: algif_skcipher - EBUSY on aio should be an error 2020-10-29 09:57:30 +01:00
Documentation media: videodev2.h: RGB BT2020 and HSV are always full range 2020-11-05 11:43:15 +01:00
drivers usb: dwc3: core: don't trigger runtime pm when remove driver 2020-11-05 11:43:28 +01:00
fs btrfs: fix readahead hang and use-after-free after removing a device 2020-11-05 11:43:27 +01:00
include btrfs: tree-checker: fix false alert caused by legacy btrfs root item 2020-11-05 11:43:27 +01:00
init printk: reduce LOG_BUF_SHIFT range for H8300 2020-11-05 11:43:16 +01:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2020-05-20 08:20:16 +02:00
kernel seccomp: Make duplicate listener detection non-racy 2020-11-05 11:43:23 +01:00
lib sgl_alloc_order: fix memory leak 2020-11-05 11:43:22 +01:00
LICENSES LICENSES: Rename other to deprecated 2019-05-03 06:34:32 -06:00
mm mm/page_owner: change split_page_owner to take a count 2020-10-29 09:57:52 +01:00
net net: 9p: initialize sun_server.sun_path to have addr's value only when addr is valid 2020-11-05 11:43:20 +01:00
samples samples/bpf: Fix possible deadlock in xdpsock 2020-11-05 11:43:17 +01:00
scripts scripts/setlocalversion: make git describe output more reliable 2020-11-01 12:01:01 +01:00
security evm: Check size of security.evm before using it 2020-11-01 12:01:05 +01:00
sound ALSA: hda/ca0132 - Add new quirk ID for SoundBlaster AE-7. 2020-10-29 09:58:09 +01:00
tools selftests/x86/fsgsbase: Test PTRACE_PEEKUSER for GSBASE with invalid LDT GS 2020-11-05 11:43:23 +01:00
usr initramfs: restore default compression behavior 2020-04-08 09:08:38 +02:00
virt KVM: arm64: Assume write fault on S1PTW permission fault on instruction fetch 2020-10-01 13:18:25 +02:00
.clang-format clang-format: Update with the latest for_each macro list 2019-08-31 10:00:51 +02:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes
.gitignore Modules updates for v5.4 2019-09-22 10:34:46 -07:00
.mailmap ARM: SoC fixes 2019-11-10 13:41:59 -08:00
COPYING COPYING: use the new text with points to the license files 2018-03-23 12:41:45 -06:00
CREDITS MAINTAINERS: Remove Simon as Renesas SoC Co-Maintainer 2019-10-10 08:12:51 -07:00
Kbuild kbuild: do not descend to ./Kbuild when cleaning 2019-08-21 21:03:58 +09:00
Kconfig docs: kbuild: convert docs to ReST and rename to *.rst 2019-06-14 14:21:21 -06:00
MAINTAINERS Documentation/llvm: add documentation on building w/ Clang/LLVM 2020-08-26 10:40:46 +02:00
Makefile Linux 5.4.74 2020-11-01 12:01:07 +01:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.