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5c9dc6379f
The powered flag should be set for any other phys anyway. Also
the flag should be locked by the channel. Otherwise, after we have
revised the device tree for the usb phy, the following warning
happened during a second system suspend. And if the driver doesn't
lock the flag, an imbalance is possible when enabling the regulator
during system resume. So, this patch fixes the issues.
< The warning >
[ 56.026531] unbalanced disables for USB20_VBUS0
[ 56.031108] WARNING: CPU: 3 PID: 513 at drivers/regulator/core.c:2593 _regula
tor_disable+0xe0/0x1c0
[ 56.040146] Modules linked in: rcar_du_drm rcar_lvds drm_kms_helper drm drm_p
anel_orientation_quirks vsp1 videobuf2_vmalloc videobuf2_dma_contig videobuf2_me
mops videobuf2_v4l2 videobuf2_common videodev snd_soc_rcar renesas_usbhs snd_soc
_audio_graph_card media snd_soc_simple_card_utils crct10dif_ce renesas_usb3 snd_
soc_ak4613 rcar_fcp pwm_rcar usb_dmac phy_rcar_gen3_usb3 pwm_bl ipv6
[ 56.074047] CPU: 3 PID: 513 Comm: kworker/u16:19 Not tainted 5.2.0-rc3-00001-
g5f20a19 #6
[ 56.082129] Hardware name: Renesas Salvator-X board based on r8a7795 ES2.0+ (
DT)
[ 56.089524] Workqueue: events_unbound async_run_entry_fn
[ 56.094832] pstate: 40000005 (nZcv daif -PAN -UAO)
[ 56.099617] pc : _regulator_disable+0xe0/0x1c0
[ 56.104054] lr : _regulator_disable+0xe0/0x1c0
[ 56.108489] sp : ffff0000121c3ae0
[ 56.111796] x29: ffff0000121c3ae0 x28: 0000000000000000
[ 56.117102] x27: 0000000000000000 x26: ffff000010fe0e60
[ 56.122407] x25: 0000000000000002 x24: 0000000000000001
[ 56.127712] x23: 0000000000000002 x22: ffff8006f99d4000
[ 56.133017] x21: ffff8006f99cc000 x20: ffff8006f9846800
[ 56.138322] x19: ffff8006f9846800 x18: ffffffffffffffff
[ 56.143626] x17: 0000000000000000 x16: 0000000000000000
[ 56.148931] x15: ffff0000112f96c8 x14: ffff0000921c37f7
[ 56.154235] x13: ffff0000121c3805 x12: ffff000011312000
[ 56.159540] x11: 0000000005f5e0ff x10: ffff0000112f9f20
[ 56.164844] x9 : ffff0000112d3018 x8 : 00000000000001ad
[ 56.170149] x7 : 00000000ffffffcc x6 : ffff8006ff768180
[ 56.175453] x5 : ffff8006ff768180 x4 : 0000000000000000
[ 56.180758] x3 : ffff8006ff76ef10 x2 : ffff8006ff768180
[ 56.186062] x1 : 3d2eccbaead8fb00 x0 : 0000000000000000
[ 56.191367] Call trace:
[ 56.193808] _regulator_disable+0xe0/0x1c0
[ 56.197899] regulator_disable+0x40/0x78
[ 56.201820] rcar_gen3_phy_usb2_power_off+0x3c/0x50
[ 56.206692] phy_power_off+0x48/0xd8
[ 56.210263] usb_phy_roothub_power_off+0x30/0x50
[ 56.214873] usb_phy_roothub_suspend+0x1c/0x50
[ 56.219311] hcd_bus_suspend+0x13c/0x168
[ 56.223226] generic_suspend+0x4c/0x58
[ 56.226969] usb_suspend_both+0x1ac/0x238
[ 56.230972] usb_suspend+0xcc/0x170
[ 56.234455] usb_dev_suspend+0x10/0x18
[ 56.238199] dpm_run_callback.isra.6+0x20/0x68
[ 56.242635] __device_suspend+0x110/0x308
[ 56.246637] async_suspend+0x24/0xa8
[ 56.250205] async_run_entry_fn+0x40/0xf8
[ 56.254210] process_one_work+0x1e0/0x320
[ 56.258211] worker_thread+0x40/0x450
[ 56.261867] kthread+0x124/0x128
[ 56.265094] ret_from_fork+0x10/0x18
[ 56.268661] ---[ end trace 86d7ec5de5c517af ]---
[ 56.273290] phy phy-ee080200.usb-phy.10: phy poweroff failed --> -5
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Fixes:
|
||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.