Merge branch 'for-next/net-switch-mv88e6xxx'

Merge branch 'for-next/imx'

Merge branch 'for-next/gpio'

lib: Port CRC8 implementation from Linux kernel ...

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fs: implement d_revalidate ...

d_revalidate is useful when filesystems change under the hood of the
fs layer. This can happen with network filesystems or with devfs.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

lib: Port kstrtox.c from Linux kernel ...

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

linux/ctype.h: Port _tolower() ...

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

include: linux: ethtool: Add missing *_UNKNOWN constants ...

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

include: linux: phy: Add missing PHY_INTERFACE_* constants ...

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

linux: string: Port kbasename() ...

Port kbasename() from Linux and use it to implement basename() we
already have.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

compiler: Update to v4.19-rc6 ...

This updates include/linux/compiler* to Linux-4.19-rc6.

Among other things this gives us __printf

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fs: implement clear_nlink and set_nlink ...

Implement clear_nlink and set_nlink and remove the private versions
from UBIFS.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fs: implement iget_locked and iget_failed ...

Implement in fs core rather than using a private version in UBIFS.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fs: implement file_inode ...

To ease code porting from Linux

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fs: Add SB_* flags ...

Newer Kernel fs code uses SB_* flags rather than the same MS_* flags.
Add them to barebox to make porting code easier.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fs: Add fscrypt no-op headers ...

Newer versions of UBIFS use fscrypt, so add no-op headers here.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fs: let dir_emit_dots return int ...

Change to the same prototype as the kernel to make code porting
easier.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Add more mutex no-ops ...

Add mutex_lock_nested, mutex_unlock_nested and mutex_is_locked to
include/linux/mutex.h and remove them from UBIFS.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Add kmemdup ...

We have kmemdup as a UBIFS specific variant, put it into the correct
header files. Instead of reimplementing it just use memdup we already
have.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Add linux/slab.h ...

Move stuff we already have in include/linux/barebox-wrapper.h that
really belongs to include/linux/slab.h to there. Also add kmem_cache_*
functions. UBIFS uses them in there own implementation, so we have to
remove it there.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mfd: rave-sp: Add mapping for legacy EEPROM command ...

This is needed to make rave-sp-eeprom driver work on "legacy"
firmware.

This is a backport of Linux kernel patch [1]

[1] https://lore.kernel.org/lkml/20180707024108.32373-5-andrew.smirnov@gmail.com/T/#mae2272763ae092b5b11ab128f5c22039d55557cb

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

scsi: ilog2: create truly constant version for sparse ...

Sparse emits errors about ilog2() in array indices because of the use of
__ilog2_32() and __ilog2_64(), rightly so
(https://www.spinics.net/lists/linux-sparse/msg03471.html).

Create a const_ilog2() variant that works with sparse for this scenario.

(Note: checkpatch.pl complains about missing parentheses, but that
appears to be a false positive. I can get rid of the warning simply by
inserting whitespace, making checkpatch "see" the whole macro).

Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
[andrew.smirnov@gmail.com: Applied kernel patch to Barebox as-is]
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

linux/log2.h: fix kernel-doc notation ...

Fix <linux/log2.h> kernel-doc:
- Add kernel-doc notation to some functions.
- Fix kernel-doc notation in function parameters.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
[andrew.smirnov@gmail.com: Applied kernel patch to Barebox as-is]
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

log2: Use fls_long() in __roundup_pow_of_two() ...

Convert __roundup_pow_of_two() to use fls_long() instead of fls() so
the code would be identical to that found in Linux. This fix also
allowed next patch(taken from Linux kernel verbatim) to apply cleanly.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

give up on gcc ilog2() constant optimizations ...

gcc-7 has an "optimization" pass that completely screws up, and
generates the code expansion for the (impossible) case of calling
ilog2() with a zero constant, even when the code gcc compiles does not
actually have a zero constant.

And we try to generate a compile-time error for anybody doing ilog2() on
a constant where that doesn't make sense (be it zero or negative).  So
now gcc7 will fail the build due to our sanity checking, because it
created that constant-zero case that didn't actually exist in the source
code.

There's a whole long discussion on the kernel mailing about how to work
around this gcc bug.  The gcc people themselevs have discussed their
"feature" in

   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72785

but it's all water under the bridge, because while it looked at one
point like it would be solved by the time gcc7 was released, that was
not to be.

So now we have to deal with this compiler braindamage.

And the only simple approach seems to be to just delete the code that
tries to warn about bad uses of ilog2().

So now "ilog2()" will just return 0 not just for the value 1, but for
any non-positive value too.

It's not like I can recall anybody having ever actually tried to use
this function on any invalid value, but maybe the sanity check just
meant that such code never made it out in public.

Reported-by: Laura Abbott <labbott@redhat.com>
Cc: John Stultz <john.stultz@linaro.org>,
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[andrew.smirnov@gmail.com: Applied kernel patch to Barebox as-is, but
specifying --exclude=tools/include/linux/log2.h]
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

log2: make order_base_2() behave correctly on const input value zero ...

The function order_base_2() is defined (according to the comment block)
as returning zero on input zero, but subsequently passes the input into
roundup_pow_of_two(), which is explicitly undefined for input zero.

This has gone unnoticed until now, but optimization passes in GCC 7 may
produce constant folded function instances where a constant value of
zero is passed into order_base_2(), resulting in link errors against the
deliberately undefined '____ilog2_NaN'.

So update order_base_2() to adhere to its own documented interface.

[ See

     http://marc.info/?l=linux-kernel&m=147672952517795&w=2

  and follow-up discussion for more background. The gcc "optimization
  pass" is really just broken, but now the GCC trunk problem seems to
  have escaped out of just specially built daily images, so we need to
  work around it in mainline.    - Linus ]

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[andrew.smirnov@gmail.com: Applied kernel patch to Barebox as-is]
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/pci'

Merge branch 'for-next/imx'

pci: add quirk infrastructure ...

This is a cut down version of the Linux kernel PCI quirk infrastructure,
which allows to register and execute some fixups before the driver is
loaded.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: Add code to support SMCCC on AArch64 ...

Port SMCCC code from Linux kernel. To accomodate that:

  - Introduce CONFIG_ARM_SMCCC, to allow enabling the code
    independent of CONFIG_ARM_SECURE_MONITOR

  - Bring <linux/arm-smccc.h> in

  - Add necessary constants to arch/arm/asm-offsets.c

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>