linux-stable/include
Kishon Vijay Abraham I a44623d927 usb: core: hcd: Add support for deferring roothub registration
It has been observed with certain PCIe USB cards (like Inateck connected
to AM64 EVM or J7200 EVM) that as soon as the primary roothub is
registered, port status change is handled even before xHC is running
leading to cold plug USB devices not detected. For such cases, registering
both the root hubs along with the second HCD is required. Add support for
deferring roothub registration in usb_add_hcd(), so that both primary and
secondary roothubs are registered along with the second HCD.

This patch has been added and reverted earier as it triggered a race
in usb device enumeration.
That race is now fixed in 5.16-rc3, and in stable back to 5.4
commit 6cca13de26 ("usb: hub: Fix locking issues with address0_mutex")
commit 6ae6dc22d2 ("usb: hub: Fix usb enumeration issue due to address0
race")

CC: stable@vger.kernel.org # 5.4+
Suggested-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Tested-by: Chris Chiu <chris.chiu@canonical.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Link: https://lore.kernel.org/r/20220510091630.16564-2-kishon@ti.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-12 13:59:59 +02:00
..
acpi ACPI: bus: Eliminate acpi_bus_get_device() 2022-04-05 19:49:26 +02:00
asm-generic bug: Have __warn() prototype defined unconditionally 2022-04-26 10:59:57 +02:00
clocksource
crypto
drm
dt-bindings dt-bindings: clk: mpfs: add defines for two new clocks 2022-04-22 18:40:15 -07:00
keys
kunit
kvm
linux usb: core: hcd: Add support for deferring roothub registration 2022-05-12 13:59:59 +02:00
math-emu
media
memory memory: renesas-rpc-if: Fix HF/OSPI data transfer in Manual Mode 2022-04-21 17:00:24 +02:00
misc
net bluetooth pull request for net: 2022-04-28 10:18:51 +02:00
pcmcia
ras
rdma
scsi scsi: iscsi: Fix NOP handling during conn recovery 2022-04-11 22:09:35 -04:00
soc
sound ASoC: Fixes for v5.18 2022-04-19 17:26:01 +02:00
target
trace NFSD bug fixes for 5.18-rc: 2022-04-12 14:23:19 -10:00
uapi ARM: 2022-05-01 11:49:32 -07:00
vdso
video
xen