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OpenCloudOS-Kernel
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Saravana Kannan d46f3e3ed5 driver core: Improve fw_devlink & deferred_probe_timeout interaction 
deferred_probe_timeout kernel commandline parameter allows probing of
consumer devices if the supplier devices don't have any drivers.

fw_devlink=on will indefintely block probe() calls on a device if all
its suppliers haven't probed successfully. This completely skips calls
to driver_deferred_probe_check_state() since that's only called when a
.probe() function calls framework APIs. So fw_devlink=on breaks
deferred_probe_timeout.

deferred_probe_timeout in its current state also ignores a lot of
information that's now available to the kernel. It assumes all suppliers
that haven't probed when the timer expires (or when initcalls are done
on a static kernel) will never probe and fails any calls to acquire
resources from these unprobed suppliers.

However, this assumption by deferred_probe_timeout isn't true under many
conditions. For example:
- If the consumer happens to be before the supplier in the deferred
  probe list.
- If the supplier itself is waiting on its supplier to probe.

This patch fixes both these issues by relaxing device links between
devices only if the supplier doesn't have any driver that could match
with (NOT bound to) the supplier device. This way, we only fail attempts
to acquire resources from suppliers that truly don't have any driver vs
suppliers that just happen to not have probed yet.

Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210402040342.2944858-3-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2021-04-05 09:17:56 +02:00
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accessibility Char/Misc driver patches for 5.12-rc1 2021-02-24 10:25:37 -08:00
acpi Merge branches 'acpi-tables' and 'acpi-scan' 2021-04-02 16:57:56 +02:00
amba
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android
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ata
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atm module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
auxdisplay auxdisplay: Remove in_interrupt() usage. 2021-03-16 16:32:40 +01:00
base driver core: Improve fw_devlink & deferred_probe_timeout interaction 2021-04-05 09:17:56 +02:00
bcma
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block block-5.12-2021-04-02 2021-04-02 16:13:13 -07:00
bluetooth module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
bus Fixes for omaps for v5.12-rc cycle 2021-03-18 23:52:27 +01:00
cdrom
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char module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
clk Merge 5.12-rc6 into driver-core-next 2021-04-05 08:51:37 +02:00
clocksource A small set of clockevent fixes which fell through the cracks 2021-02-22 14:11:36 -08:00
connector
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counter counter: stm32-timer-cnt: fix ceiling miss-alignment with reload register 2021-03-06 16:48:09 +00:00
cpufreq cpufreq: Fix scaling_{available,boost}_frequencies_show() comments 2021-03-26 17:43:48 +01:00
cpuidle
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crypto vio: make remove callback return void 2021-03-02 22:41:23 +11:00
cxl cxl/mem: Fix potential memory leak 2021-02-22 14:44:39 -08:00
dax Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-02-27 08:07:12 -08:00
dca
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devfreq Merge branches 'pm-devfreq' and 'pm-tools' 2021-02-15 17:02:04 +01:00
dio
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dma dmaengine updates for v5.12-rc1 2021-02-23 15:05:10 -08:00
dma-buf dma-fence: allow signaling drivers to set fence timestamp 2021-02-24 21:05:28 +05:30
edac Merge branch 'edac-misc' into edac-updates-for-v5.12 2021-02-15 10:06:58 +01:00
eisa
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extcon Merge 5.12-rc6 into driver-core-next 2021-04-05 08:51:37 +02:00
firewire firewire: nosy: Fix a use-after-free bug in nosy_ioctl() 2021-04-04 14:05:45 -07:00
firmware Another couple of EFI fixes for v5.12-rc: 2021-03-19 14:23:46 +01:00
fpga
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fsi
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gnss
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gpio gpiolib: Assign fwnode to parent's if no primary one provided 2021-03-16 10:18:08 +01:00
gpu drm/imx: imx-drm-core and imx-ldb fixes 2021-04-02 04:53:16 +10:00
greybus
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hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid 2021-02-23 14:52:22 -08:00
hsi
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hv mm/memory_hotplug: MEMHP_MERGE_RESOURCE -> MHP_MERGE_RESOURCE 2021-02-26 09:41:00 -08:00
hwmon hwmon: raspberry-pi: Clean-up few drivers by using managed work init 2021-03-23 15:22:40 +01:00
hwspinlock hwspinlock: omap: Add support for K3 AM64x SoCs 2021-02-09 11:36:50 -06:00
hwtracing ARM updates for 5.12-rc1: 2021-02-22 14:27:07 -08:00
i2c i2c: exynos5: Preserve high speed master code 2021-02-26 11:47:42 +01:00
i3c I3C for 5.12 2021-02-22 09:52:55 -08:00
ide ide-5.11-2021-02-28 2021-02-28 15:48:25 -08:00
idle
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iio First set of IIO and counter fixes for the 5.12 cycle 2021-03-15 16:34:39 +01:00
infiniband RDMA 5.12 second rc pull request 2021-03-25 11:23:35 -07:00
input module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
interconnect interconnect: Fix kerneldoc warning 2021-03-18 23:46:21 +02:00
iommu iommu/tegra-smmu: Make tegra_smmu_probe_device() to handle all IOMMU phandles 2021-03-18 11:31:12 +01:00
ipack ipack: Handle a driver without remove callback 2021-02-09 09:48:23 +01:00
irqchip irqchip/ingenic: Add support for the JZ4760 2021-03-09 08:45:17 +00:00
isdn isdn: capi: fix mismatched prototypes 2021-03-22 16:51:11 -07:00
leds leds: trigger/tty: Use led_set_brightness_sync() from workqueue 2021-03-10 09:27:56 +01:00
lightnvm lightnvm: pblk: Replace guid_copy() with export_guid()/import_guid() 2021-02-14 21:27:24 -07:00
macintosh
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mailbox mailbox: arm_mhuv2: Skip calling kfree() with invalid pointer 2021-02-22 13:34:27 -06:00
mcb
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md dm ioctl: fix out of bounds array access when no devices 2021-03-26 14:51:50 -04:00
media module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
memory Char/Misc driver patches for 5.12-rc1 2021-02-24 10:25:37 -08:00
memstick
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message
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mfd mfd: intel_quark_i2c_gpio: Revert "Constify static struct resources" 2021-03-23 09:14:12 +00:00
misc mei: allow map and unmap of client dma buffer only for disconnected client 2021-03-23 15:15:15 +01:00
mmc mmc: cqhci: Fix random crash when remove mmc module/card 2021-03-09 10:00:52 +01:00
most
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mtd module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
mux
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net Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-03-24 18:16:04 -07:00
nfc Char/Misc driver patches for 5.12-rc1 2021-02-24 10:25:37 -08:00
ntb NTB: Add support for EPF PCI Non-Transparent Bridge 2021-02-23 14:12:53 -06:00
nubus
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nvdimm libnvdimm + device-dax for 5.12 2021-02-24 09:35:54 -08:00
nvme nvmet-tcp: fix kmap leak when data digest in use 2021-03-18 05:39:18 +01:00
nvmem nvmem: qcom-spmi-sdam: Fix uninitialized pdev pointer 2021-02-05 11:25:52 +01:00
of of: property: fw_devlink: Add support for remote-endpoint 2021-04-02 17:06:58 +02:00
opp opp: Don't drop extra references to OPPs accidentally 2021-03-12 09:26:52 +05:30
parisc
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parport module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
pci powerpc fixes for 5.12 #4 2021-03-21 10:57:35 -07:00
pcmcia Merge branch 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux 2021-02-26 13:54:43 -08:00
perf perf/arm_dmc620_pmu: Fix error return code in dmc620_pmu_device_probe() 2021-03-12 11:30:31 +00:00
phy phy: second round of phy fixes for v5.11 2021-02-10 10:39:23 +01:00
pinctrl intel-pinctrl for v5.12-3 2021-03-30 00:46:49 +02:00
platform Merge 5.12-rc6 into driver-core-next 2021-04-05 08:51:37 +02:00
pnp
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power power: supply: axp20x_usb_power: fix work-queue init 2021-03-26 15:45:33 +01:00
powercap powercap/drivers/dtpm: Add the experimental label to the option description 2021-03-01 17:43:29 +01:00
pps
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ps3
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ptp ptp_qoriq: fix overflow in ptp_qoriq_adjfine() u64 calcalation 2021-03-24 12:10:03 -07:00
pwm pwm: Changes for v5.12-rc1 2021-02-25 12:23:49 -08:00
rapidio
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ras
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regulator regulator: qcom_spmi-regulator: Clean-up by using managed work init 2021-03-23 15:22:40 +01:00
remoteproc remoteproc: qcom: pas: Add SM8350 PAS remoteprocs 2021-02-11 12:52:18 -06:00
reset RISC-V Patches for the 5.12 Merge Window 2021-02-26 10:28:35 -08:00
rpmsg
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rtc Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-02-27 08:07:12 -08:00
s390 module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
sbus module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
scsi SCSI fixes on 20210402 2021-04-03 09:07:35 -07:00
sh module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
siox
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slimbus
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soc OpenRISC fix for 5.12 2021-04-03 15:42:45 -07:00
soundwire ALSA: hda: move Intel SoundWire ACPI scan to dedicated module 2021-03-02 15:33:00 +01:00
spi spi: cadence: set cqspi to the driver_data field of struct device 2021-03-11 13:32:32 +00:00
spmi spmi: spmi-pmic-arb: Fix hw_irq overflow 2021-02-12 12:26:46 +01:00
ssb
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staging staging: rtl8192e: Change state information from u16 to u8 2021-03-23 13:32:40 +01:00
target scsi: target: pscsi: Clean up after failure in pscsi_map_sg() 2021-03-24 23:19:23 -04:00
tc
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tee module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
thermal thermal/core: Add NULL pointer check before using cooling device stats 2021-03-17 09:55:58 +01:00
thunderbolt thunderbolt: Increase runtime PM reference count on DP tunnel discovery 2021-03-08 14:22:42 +03:00
tty Serial driver fix for 5.12-rc6 2021-04-03 10:00:53 -07:00
uio uio: uio_pci_generic: don't fail probe if pdev->irq equals to IRQ_NOTCONNECTED 2021-02-09 12:25:32 +01:00
usb usb: dwc2: Prevent core suspend when port connection flag is 0 2021-03-26 14:51:34 +01:00
vdpa vdpa_sim: Skip typecasting from void* 2021-03-14 04:37:36 -04:00
vfio vfio/nvlink: Add missing SPAPR_TCE_IOMMU depends 2021-03-29 14:48:00 -06:00
vhost virtio: fixes, cleanups 2021-03-18 11:20:35 -07:00
video hyperv-fixes for 5.12-rc6 2021-04-03 10:42:20 -07:00
virt virt: acrn: Correct type casting of argument of copy_from_user() 2021-03-10 16:59:50 +01:00
virtio virtio: fixes, cleanups 2021-03-18 11:20:35 -07:00
visorbus
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vlynq
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vme vme: make remove callback return void 2021-02-09 12:15:07 +01:00
w1
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watchdog watchdog: retu_wdt: Clean-up by using managed work init 2021-03-23 15:22:40 +01:00
xen xen: branch for v5.12-rc5 2021-03-26 11:15:25 -07:00
zorro
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Kconfig cxl/mem: Introduce a driver for CXL-2.0-Type-3 endpoints 2021-02-16 20:36:38 -08:00
Makefile Simple Firmware Interface (SFI) support removal for v5.12-rc1 2021-02-24 10:35:29 -08:00