The SET_CONFIG_TRIES macro in hub.c is badly named; it controls the
number of port-initialization retry attempts rather than the number of
Set-Configuration attempts. Furthermore, the USE_NEW_SCHEME macro and
use_new_scheme() function are written in a very confusing manner,
making it almost impossible to figure out exactly what they do or
check that they are correct.
This patch renames SET_CONFIG_TRIES to PORT_INIT_TRIES, removes
USE_NEW_SCHEME entirely, and rewrites use_new_scheme() to be much more
transparent, with added comments explaining how it works. The patch
also pulls the single call site of use_new_scheme() out from the
Get-Descriptor retry loop (where it returns the same value each time)
and renames the local variable used to store the result.
The overall effect is a minor cleanup. However, there is one
functional change: If the "use_both_schemes" module parameter isn't
set (by default it is set), the existing code does only two retry
iterations. After this patch it will always perform four, regardless
of the parameter's value.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20200928152050.GA134701@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This includes following Thunderbolt/USB4 changes for v5.10 merge window:
* A couple of optimizations around Tiger Lake force power logic and
NHI (Native Host Interface) LC (Link Controller) mailbox command
processing
* Power management improvements for Software Connection Manager
* Debugfs support
* Allow KUnit tests to be enabled also when Thunderbolt driver is
configured as module.
* Few minor cleanups and fixes
All these have been in linux-next with no reported issues.
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Merge tag 'thunderbolt-for-v5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-next
Mika writes:
thunderbolt: Changes for v5.10 merge window
This includes following Thunderbolt/USB4 changes for v5.10 merge window:
* A couple of optimizations around Tiger Lake force power logic and
NHI (Native Host Interface) LC (Link Controller) mailbox command
processing
* Power management improvements for Software Connection Manager
* Debugfs support
* Allow KUnit tests to be enabled also when Thunderbolt driver is
configured as module.
* Few minor cleanups and fixes
All these have been in linux-next with no reported issues.
* tag 'thunderbolt-for-v5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt: (37 commits)
thunderbolt: Capitalize comment on top of QUIRK_FORCE_POWER_LINK_CONTROLLER
thunderbolt: Correct tb_check_quirks() kernel-doc
thunderbolt: Log correct zeroX entries in decode_error()
thunderbolt: Handle ERR_LOCK notification
thunderbolt: Use "if USB4" instead of "depends on" in Kconfig
thunderbolt: Allow KUnit tests to be built also when CONFIG_USB4=m
thunderbolt: Only stop control channel when entering freeze
thunderbolt: debugfs: Fix uninitialized return in counters_write()
thunderbolt: Add debugfs interface
thunderbolt: No need to warn in TB_CFG_ERROR_INVALID_CONFIG_SPACE
thunderbolt: Introduce tb_switch_is_tiger_lake()
thunderbolt: Introduce tb_switch_is_ice_lake()
thunderbolt: Check for Intel vendor ID when identifying controller
thunderbolt: Introduce tb_port_is_nhi()
thunderbolt: Introduce tb_switch_next_cap()
thunderbolt: Introduce tb_port_next_cap()
thunderbolt: Move struct tb_cap_any to tb_regs.h
thunderbolt: Add runtime PM for Software CM
thunderbolt: Create device links from ACPI description
ACPI: Export acpi_get_first_physical_node() to modules
...
For interfaces that lack a union descriptor, probe for a
"combined-interface" before falling back to the call-management
descriptor instead of the other way round.
This allows for the removal of the NO_DATA_INTERFACE quirk and makes the
probe algorithm somewhat easier to follow.
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20200921135951.24045-5-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use the data-class define provided by USB core and drop the
driver-specific one.
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20200921135951.24045-4-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Handle broken union functional descriptors where the master-interface
doesn't exist or where its class is of neither Communication or Data
type (as required by the specification) by falling back to
"combined-interface" probing.
Note that this still allows for handling union descriptors with switched
interfaces.
This specifically makes the Whistler radio scanners TRX series devices
work with the driver without adding further quirks to the device-id
table.
Reported-by: Daniel Caujolle-Bert <f1rmb.daniel@gmail.com>
Tested-by: Daniel Caujolle-Bert <f1rmb.daniel@gmail.com>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20200921135951.24045-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 2ad9d544f2.
Drop bogus sanity check; an interface in the active configuration will
always have a current altsetting assigned by USB core.
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20200921135951.24045-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The usb_control_msg_send() and usb_control_msg_recv() calls can return
an error if a "short" write/read happens, and they can handle data off
of the stack, so move the driver over to using those calls instead,
saving some logic when dynamically allocating memory.
v2: changed API of use usb_control_msg_send() and usb_control_msg_recv()
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Link: https://lore.kernel.org/r/20200914153756.3412156-11-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200923134348.23862-15-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The usb_control_msg_send() and usb_control_msg_recv() calls can return
an error if a "short" write/read happens, and they can handle data off
of the stack, so move the driver over to using those calls instead,
saving some logic when dynamically allocating memory.
v2: API change of use usb_control_msg_send() and usb_control_msg_recv()
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Vasily Khoruzhick <anarsoul@gmail.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20200914153756.3412156-9-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200923134348.23862-13-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The usb_control_msg_recv() function can handle data on the stack, as
well as properly detecting short reads, so move to use that function
instead of the older usb_control_msg() call. This ends up removing a
lot of extra lines in the driver.
v2: change API of usb_control_msg_send()
Cc: Juergen Stuber <starblue@users.sourceforge.net>
Link: https://lore.kernel.org/r/20200914153756.3412156-6-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200923134348.23862-12-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The usb_control_msg_send() and usb_control_msg_recv() calls can return
an error if a "short" write/read happens, so move the driver over to
using those calls instead, saving some logic in the wrapper functions
that were being used in this driver.
This also resolves a long-staging bug where data on the stack was being
sent in a USB control message, which was not allowed.
v2: API change of usb_control_msg_send()
Cc: Jaroslav Kysela <perex@perex.cz>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20200914153756.3412156-8-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200923134348.23862-11-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The usb_control_msg_send() call can handle data on the stack, as well as
returning an error if a "short" write happens, so move the driver over
to using that call instead. This ends up removing a helper function
that is no longer needed.
v2: API change in usb_control_msg_send()
Cc: Jaroslav Kysela <perex@perex.cz>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20200914153756.3412156-7-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200923134348.23862-10-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
They need to specify how memory is to be allocated,
as control messages need to work in contexts that require GFP_NOIO.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20200923134348.23862-9-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit d6a4992495.
Control messages are needed in contexts when memory allocations
are restricted, such as handling device resets and runtime PM.
For this reason the control message API internally uses GFP_NOIO.
This is a band aid introduced because when we recognized the issue,
the call chains were highly convoluted. Continuing this trend
is not a good idea.
So I am shooting the whole kennel here.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20200923134348.23862-2-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Fix compilation for the new dax_supported() exported helper
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Merge tag 'libnvdimm-fixes-5.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fix from Dan Williams:
"Fix compilation for the new dax_supported() exported helper"
* tag 'libnvdimm-fixes-5.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
dax: Fix compilation for CONFIG_DAX && !CONFIG_FS_DAX
dax_supported() is defined whenever CONFIG_DAX is enabled. So dummy
implementation should be defined only in !CONFIG_DAX case, not in
!CONFIG_FS_DAX case.
Fixes: e2ec512825 ("dm: Call proper helper to determine dax support")
Cc: <stable@vger.kernel.org>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
rewritten syscall number, from Kees Cook.
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Merge tag 'core_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull syscall tracing fix from Borislav Petkov:
"Fix the seccomp syscall rewriting so that trace and audit see the
rewritten syscall number, from Kees Cook"
* tag 'core_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
core/entry: Report syscall correctly for trace and audit
Zijlstra.
* Make percpu-rwsem operations on the semaphore's ->read_count IRQ-safe
because it can be used in an IRQ context, from Hou Tao.
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Merge tag 'locking_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Borislav Petkov:
"Two fixes from the locking/urgent pile:
- Fix lockdep's detection of "USED" <- "IN-NMI" inversions (Peter
Zijlstra)
- Make percpu-rwsem operations on the semaphore's ->read_count
IRQ-safe because it can be used in an IRQ context (Hou Tao)"
* tag 'locking_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/percpu-rwsem: Use this_cpu_{inc,dec}() for read_count
locking/lockdep: Fix "USED" <- "IN-NMI" inversions
- ensure that the EFI bootloader control module only probes successfully
on systems that support the EFI SetVariable runtime service
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Merge tag 'efi-urgent-for-v5.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fix from Borislav Petkov:
"Ensure that the EFI bootloader control module only probes successfully
on systems that support the EFI SetVariable runtime service"
[ Tag and commit from Ard Biesheuvel, forwarded by Borislav ]
* tag 'efi-urgent-for-v5.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi: efibc: check for efivars write capability
* Disable relocation relaxation for the compressed kernel when not built
as -pie as in that case kernels built with clang and linked with LLD
fail to boot due to the linker optimizing some instructions in non-PIE
form; the gory details in the commit message, from Arvind Sankar.
* A fix for the "bad bp value" warning issued by the frame-pointer
unwinder, from Josh Poimboeuf.
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Merge tag 'x86_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- A defconfig fix (Daniel Díaz)
- Disable relocation relaxation for the compressed kernel when not
built as -pie as in that case kernels built with clang and linked
with LLD fail to boot due to the linker optimizing some instructions
in non-PIE form; the gory details in the commit message (Arvind
Sankar)
- A fix for the "bad bp value" warning issued by the frame-pointer
unwinder (Josh Poimboeuf)
* tag 'x86_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/unwind/fp: Fix FP unwinding in ret_from_fork
x86/boot/compressed: Disable relocation relaxation
x86/defconfigs: Explicitly unset CONFIG_64BIT in i386_defconfig
- Fix an original bug in device-mapper table reference counting when
interrogating dax capability in the component device. This bug was
hidden by the following bug.
- Fix device-mapper to use the proper helper (dax_supported() instead of
the leaf helper generic_fsdax_supported()) to determine dax operation
of a stacked block device configuration. The original implementation
is only valid for one level of dax-capable block device stacking. This
bug was discovered while fixing the below regression.
- Fix an infinite recursion regression introduced by broken attempts to
quiet the generic_fsdax_supported() path and make it bail out before
logging "dax capability not found" errors.
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Merge tag 'libnvdimm-fixes-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
"A handful of fixes to address a string of mistakes in the mechanism
for device-mapper to determine if its component devices are dax
capable.
- Fix an original bug in device-mapper table reference counting when
interrogating dax capability in the component device. This bug was
hidden by the following bug.
- Fix device-mapper to use the proper helper (dax_supported() instead
of the leaf helper generic_fsdax_supported()) to determine dax
operation of a stacked block device configuration. The original
implementation is only valid for one level of dax-capable block
device stacking. This bug was discovered while fixing the below
regression.
- Fix an infinite recursion regression introduced by broken attempts
to quiet the generic_fsdax_supported() path and make it bail out
before logging "dax capability not found" errors"
* tag 'libnvdimm-fixes-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
dax: Fix stack overflow when mounting fsdax pmem device
dm: Call proper helper to determine dax support
dm/dax: Fix table reference counts
* A fix for a lockdep issue to avoid an asserting triggering during early boot.
There shouldn't be any incorrect behavior as the system isn't concurrent at
the time.
* The addition of a missing fence when installing early fixmap mappings.
* A corretion to the K210 device tree's interrupt map.
* A fix for M-mode timer handling on the K210.
I know it's a it of an odd time, so if these don't make rc6 it's not a big
deal, but I thought I'd just send it out now rather that waiting as these are
ready to go.
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Merge tag 'riscv-for-linus-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- A fix for a lockdep issue to avoid an asserting triggering during
early boot. There shouldn't be any incorrect behavior as the system
isn't concurrent at the time.
- The addition of a missing fence when installing early fixmap
mappings.
- A corretion to the K210 device tree's interrupt map.
- A fix for M-mode timer handling on the K210.
* tag 'riscv-for-linus-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
RISC-V: Resurrect the MMIO timer implementation for M-mode systems
riscv: Fix Kendryte K210 device tree
riscv: Add sfence.vma after early page table changes
RISC-V: Take text_mutex in ftrace_init_nop()
Here are some small USB and one Thunderbolt driver fixes for 5.9-rc6.
Nothing major at all, just some fixes for reported issues, and a quirk
addition:
- typec fixes
- UAS disconnect fix
- usblp race fix
- ehci-hcd modversions build fix
- ignore wakeup quirk table addition
- thunderbolt DROM read fix
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/Thunderbolt fixes from Greg KH:
"Here are some small USB and one Thunderbolt driver fixes.
Nothing major at all, just some fixes for reported issues, and a quirk
addition:
- typec fixes
- UAS disconnect fix
- usblp race fix
- ehci-hcd modversions build fix
- ignore wakeup quirk table addition
- thunderbolt DROM read fix
All of these have been in linux-next with no reported issues"
* tag 'usb-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usblp: fix race between disconnect() and read()
ehci-hcd: Move include to keep CRC stable
usb: typec: intel_pmc_mux: Handle SCU IPC error conditions
USB: quirks: Add USB_QUIRK_IGNORE_REMOTE_WAKEUP quirk for BYD zhaoxin notebook
USB: UAS: fix disconnect by unplugging a hub
usb: typec: ucsi: Prevent mode overrun
usb: typec: ucsi: acpi: Increase command completion timeout value
thunderbolt: Retry DROM read once if parsing fails
Here are some small TTY/Serial and one more fbcon fix for 5.9-rc6
They include:
- serial core locking regression fixes
- new device ids for 8250_pci driver
- fbcon fix for syzbot found issue
All have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial/fbcon fixes from Greg KH:
"Here are some small tty/serial and one more fbcon fix.
They include:
- serial core locking regression fixes
- new device ids for 8250_pci driver
- fbcon fix for syzbot found issue
All have been in linux-next with no reported issues"
* tag 'tty-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
fbcon: Fix user font detection test at fbcon_resize().
serial: 8250_pci: Add Realtek 816a and 816b
serial: core: fix console port-lock regression
serial: core: fix port-lock initialisation
