LinuxKPI: USB change successful probe result to BUS_PROBE_DEFAULT

Rather than returning 0 (which is BUS_PROBE_SPECIFIC) return
BUS_PROBE_DEFAULT to give other drivers a possible chance too
to attach

LinuxKPI: USB change successful probe result to BUS_PROBE_DEFAULT

Rather than returning 0 (which is BUS_PROBE_SPECIFIC) return
BUS_PROBE_DEFAULT to give other drivers a possible chance too
to attach.

Reported by: jhb
Reviewed by: hselasky, jhb, imp
Differential Revision: https://reviews.freebsd.org/D34317

(cherry picked from commit 810ca5629aae1c525f29fae5498a64b596736094)

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LinuxKPI: USB return possible error from suspend/resume

USB suspend/resume cannot fail so we never returned the error which
resulted in a -Wunused-but-set-variable warning.
Initialize the return var

LinuxKPI: USB return possible error from suspend/resume

USB suspend/resume cannot fail so we never returned the error which
resulted in a -Wunused-but-set-variable warning.
Initialize the return variable and return a possible error possibly
triggering a printf upstream to at least have a trace of the problem.
This also fixes the warning.

Suggested by: hselasky
Sponsored by: The FreeBSD Foundation
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D33107

(cherry picked from commit 943df073a348bcb1e701c3677536f913761d4123)

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LinuxKPI: fix -Wunused-but-set-variable warnings

Handle write-only variables by removing the unused return value from void
functions or removing the unused variables entirely.

Sponsored by: The Fre

LinuxKPI: fix -Wunused-but-set-variable warnings

Handle write-only variables by removing the unused return value from void
functions or removing the unused variables entirely.

Sponsored by: The FreeBSD Foundation
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D33107

(cherry picked from commit 7043359ce3c1e56ed55c8b41867a14a418511a05)

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Improve handling of alternate settings in the USB stack.

Allow setting the alternate interface number to fail when there is only
one alternate setting present, to comply with the USB specification.

Improve handling of alternate settings in the USB stack.

Allow setting the alternate interface number to fail when there is only
one alternate setting present, to comply with the USB specification.

Refactor how iface->num_altsetting is computed.

Bump the __FreeBSD_version due to change of core USB structure.

PR: 251856
MFC after: 1 week
Submitted by: Ma, Horse <[email protected]>
Sponsored by: Mellanox Technologies // NVIDIA Networking

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compat: clean up empty lines in .c and .h files

usb(4): Stop checking for failures from malloc(M_WAITOK).

Handle the fact that parts of usb(4) can be compiled into the boot
loader, where M_WAITOK does not guarantee a successful allocation.

PR:

usb(4): Stop checking for failures from malloc(M_WAITOK).

Handle the fact that parts of usb(4) can be compiled into the boot
loader, where M_WAITOK does not guarantee a successful allocation.

PR: 240545
Submitted by: Andrew Reiter <[email protected]> (original version)
Reviewed by: hselasky
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D25706

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linuxkpi whitespace cleanup

Reviewed by: hselasky, markj
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D14807

sys/compat/linux*: spelling fixes.

Mostly on comments but there are some user-visible messages as well.

MFC after: 2 weeks

Finish process of moving the LinuxKPI module into the default kernel build.

- Move all files related to the LinuxKPI into sys/compat/linuxkpi and
its subfolders.
- Update sys/conf/files and some M

Finish process of moving the LinuxKPI module into the default kernel build.

- Move all files related to the LinuxKPI into sys/compat/linuxkpi and
its subfolders.
- Update sys/conf/files and some Makefiles to use new file locations.
- Added description of COMPAT_LINUXKPI to sys/conf/NOTES which in turn
adds the LinuxKPI to all LINT builds.
- The LinuxKPI can be added to the kernel by setting the
COMPAT_LINUXKPI option. The OFED kernel option no longer builds the
LinuxKPI into the kernel. This was done to keep the build rules for
the LinuxKPI in sys/conf/files simple.
- Extend the LinuxKPI module to include support for USB by moving the
Linux USB compat from usb.ko to linuxkpi.ko.
- Bump the FreeBSD_version.
- A universe kernel build has been done.

Reviewed by: np @ (cxgb and cxgbe related changes only)
Sponsored by: Mellanox Technologies

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