Update Makefile to build from source in fs/autofs instead of fs/autofs4.

Link: http://lkml.kernel.org/r/152626706824.28589.1915028175544560855.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Delete the now unused autofs4 module files.

Link: http://lkml.kernel.org/r/152626707391.28589.3553309771262313504.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Create Makefile and Kconfig for autofs module.

[raven@themaw.net: make autofs4 Kconfig depend on AUTOFS_FS]
  Link: http://lkml.kernel.org/r/152687649097.8263.7046086367407522029.stgit@pluto.themaw.net
Link: http://lkml.kernel.org/r/152626705591.28589.356365986974038383.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

There are two files in Documentation/filsystems that should now use
autofs rather than autofs4 in their names.

Link: http://lkml.kernel.org/r/152626707957.28589.3325300375892913999.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Finally remove autofs4 references in the filesystems documentation.

Link: http://lkml.kernel.org/r/152626709055.28589.416082809460051475.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Update the autofs entry in MAINTAINERS to reflect the rename of autofs4
to autofs.

Link: http://lkml.kernel.org/r/152626709611.28589.456596640024354223.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Due to the autofs4 module using a file system type name of autofs
different from the module containing directory name autoload did not
function properly.  To work around this kernel configurations have often
elected to build the module into the kernel.

This can result in selinux policies that prohibit autoloading of the
autofs module which need to be changed.

Add a comment about this to "possible changes" section of the autofs4
module help.

Link: http://lkml.kernel.org/r/152686474171.6155.1239659539983577463.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Remove includes that aren't needed from autofs (and fs/compat_ioctl.c).

Link: http://lkml.kernel.org/r/152635085258.5968.9743527195522188148.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

We don't set "*name" so it's slightly nicer to just pass "name" instead
of "&name".

Link: http://lkml.kernel.org/r/20180531064736.lnisb55eajwjynvk@kili.mountain
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Merge updates from Andrew Morton:

 - a few misc things

 - ocfs2 updates

 - v9fs updates

 - MM

 - procfs updates

 - lib/ updates

 - autofs updates

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits)
  autofs: small cleanup in autofs_getpath()
  autofs: clean up includes
  autofs: comment on selinux changes needed for module autoload
  autofs: update MAINTAINERS entry for autofs
  autofs: use autofs instead of autofs4 in documentation
  autofs: rename autofs documentation files
  autofs: create autofs Kconfig and Makefile
  autofs: delete fs/autofs4 source files
  autofs: update fs/autofs4/Makefile
  autofs: update fs/autofs4/Kconfig
  autofs: copy autofs4 to autofs
  autofs4: use autofs instead of autofs4 everywhere
  autofs4: merge auto_fs.h and auto_fs4.h
  fs/binfmt_misc.c: do not allow offset overflow
  checkpatch: improve patch recognition
  lib/ucs2_string.c: add MODULE_LICENSE()
  lib/mpi: headers cleanup
  lib/percpu_ida.c: use _irqsave() instead of local_irq_save() + spin_lock
  lib/idr.c: remove simple_ida_lock
  lib/bitmap.c: micro-optimization for __bitmap_complement()
  ...

If AHD_DEBUG is enabled and ahd_platform_alloc fails then ahd is set to
null and the debug printk dereferences ahd when passing it to ahd_name.
Fix this by moving the debug printk to before the call to
ahd_platform_alloc where ahd is not null at that point.

Detected by CoverityScan, CID#100296 ("Explicit null dereference")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

This patch fixes a crash on qla2x00_mailbox_command caused when the driver
is on UNLOADING state and tries to call qla2x00_poll, which triggers a
NULL pointer dereference.

Signed-off-by: Rodrigo R. Galvao <rosattig@linux.vnet.ibm.com>
Signed-off-by: Mauro S. M. Rodrigues <maurosr@linux.vnet.ibm.com>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Some newer target uses "Status Qualifier" response in a returned "Busy
Status". This new response code of 0x4001, which is "Scope" bits,
translates to "Affects all units accessible by target".  Due to this new
value returned in the Scope bits, driver was using that value as timeout
value which resulted into driver waiting for 27min timeout.

This patch masks off this Scope bits so that driver does not use this
value as retry delay time.

Cc: <stable@vger.kernel.org>
Signed-off-by: Anil Gurumurthy <anil.gurumurthy@cavium.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

This leak was introduced in 91cb74f and caused us
to leak one small buffer for every symlink query.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

If d_alloc_parallel() returns ERR_PTR(...), we don't want to dput()
that.  Small reorganization allows to have all error-in-lookup
cases rejoin the main codepath after dput(child), avoiding the
entire problem.

Spotted-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Fixes: 0168b9e "procfs: switch instantiate_t to d_splice_alias()"
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

…robclark/linux into drm-next

A bunch of msm fixes and some atomic work.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGvXe157nd70=GPjre=HjiAH91tGM50+XtM59b2MEChvXQ@mail.gmail.com

…op.org/drm/drm-misc into drm-next

drm-misc-next-fixes for v4.18:

Driver changes:
- Plug small memory leak in vc4. (anholt)
- Depend on MMU in v3d. (arnd)

Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/12faab25-e809-e73c-409c-5e9c08aa351c@linux.intel.com

hid-alps driver cleanups wrt. t4_read_write_register() handling
from Christophe Jaillet

Redragon Asura support from Robert Munteanu

Valve Steam Controller support from Rodrigo Rivas Costa

Assorted smaller fixes to i2c-hid driver

- improvement of duplicate usage handling in hid-input from Benjamin Tissoires
- Win 8.1 precisioun touchpad spec implementation from Benjamin Tissoires

RMI4 correct split report handling from Benjamin Tissoires

Support for "In Range" flag for Wacom Intuos/Bamboo devices from Jason Gerecke

Enable HWP boost on Skylake server and workstations.

Reported-by: Mel Gorman <mgorman@techsingularity.net>
Tested-by: Giovanni Gherdovich <ggherdovich@suse.cz>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

According to current code implementation, detecting the long
idle period is done by checking if the interval between two
adjacent utilization update handlers is long enough. Although
this mechanism can detect if the idle period is long enough
(no utilization hooks invoked during idle period), it might
not cover a corner case: if the task has occupied the CPU
for too long which causes no context switches during that
period, then no utilization handler will be launched until this
high prio task is scheduled out. As a result, the idle_periods
field might be calculated incorrectly because it regards the
100% load as 0% and makes the conservative governor who uses
this field confusing.

Change the detection to compare the idle_time with sampling_rate
directly.

Reported-by: Artem S. Tashkinov <t.artem@mailcity.com>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Commit 21c54b7 ("kconfig: show compiler version text in the top
comment") was intended to detect the compiler upgrade, but Geert
reported a breakage on the m68k build.

The compiler upgrade is detected by the change of the environment
variable, CC_VERSION_TEXT, which contains the first line of the output
from $(CC) --version.  Currently, this works well when CROSS_COMPILE
is given via the environment variable or the Make command line.

However, some architectures such as m68k can specify CROSS_COMPILE
from arch/$(SRCARCH)/Makefile as well.  In this case, "make ARCH=m68k"
ends up with endless syncconfig loop.

  $ make ARCH=m68k defconfig
  *** Default configuration is based on 'multi_defconfig'
  #
  # configuration written to .config
  #
  $ make ARCH=m68k
  scripts/kconfig/conf  --syncconfig Kconfig
  scripts/kconfig/conf  --syncconfig Kconfig
  scripts/kconfig/conf  --syncconfig Kconfig
  scripts/kconfig/conf  --syncconfig Kconfig

Things are happening like this:

Because arch/$(SRCARCH)/Makefile is included after CC_VERSION_TEXT
is set, it contains the host compiler version in the defconfig phase.

To create or update auto.conf, the following line is triggered:

include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
        $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig

This recurses the top Makefile after arch/$(SRCARCH)/Makefile is
included.  CROSS_COMPILE is set to a m68k toolchain prefix and
exported to the recursed Make.  Then, syncconfig is invoked with
the target compiler version in CC_VERSION_TEXT.

The Make will restart because auto.conf and auto.conf.cmd have been
updated.  At this point, CROSS_COMPILE is reset, so CC_VERSION_TEXT
is set to the host compiler version again.  Then, syncconfig is
triggered due to the change of CC_VERSION_TEXT.  This loop continues
eternally.

To fix this problem, $(CC_VERSION_TEXT) must be evaluated only after
arch/$(SRCARCH)/Makefile.  Setting it earlier is OK as long as it is
defined by using the '=' operator instead of ':='.

For the defconfig phase, $(CC_VERSION_TEXT) is evaluated when Kbuild
descends into scripts/kconfig/, so it contains the target compiler
version correctly.

include/config/auto.conf.cmd references $(CC_VERSION_TEXT) as well,
so it must be included after arch/$(SRCARCH)/Makefile.

Fixes: 21c54b7 ("kconfig: show compiler version text in the top comment")
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>