I missed converting the last zram attribute to CLASS_ATTR_RO() after
removing CLASS_ATTR() from the kernel, causing a build breakage.  This
patch fixes that problem.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Now that all in-kernel users of bus_type.dev_attrs have been converted
to use dev_groups instead, the dev_attrs field, and logic surrounding
it, can be removed.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Johan Hovold <johan@kernel.org>
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: <linuxppc-dev@lists.ozlabs.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Johan Hovold <johan@kernel.org>
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: <linuxppc-dev@lists.ozlabs.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

We are trying to get rid of DRIVER_ATTR(), and the usbip driver
attribute can be trivially changed to use DRIVER_ATTR_RW().

Cc: Valentina Manea <valentina.manea.m@gmail.com>
Cc: <linux-usb@vger.kernel.org>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

We are trying to get rid of DRIVER_ATTR(), and the s390 drivers'
attributes can be trivially changed to use DRIVER_ATTR_RO() and
DRIVER_ATTR_WO().

Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Cc: Ursula Braun <ubraun@linux.vnet.ibm.com>
Cc: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: <linux-s390@vger.kernel.org>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

We are trying to get rid of DRIVER_ATTR(), and the thinkpad_acpi
driver's attributes can be trivially changed to use DRIVER_ATTR_RO() and
DRIVER_ATTR_RW().

Cc: Henrique de Moraes Holschuh <ibm-acpi@hmh.eng.br>
Cc: Andy Shevchenko <andy@infradead.org>
Cc: <ibm-acpi-devel@lists.sourceforge.net>
Cc: <platform-driver-x86@vger.kernel.org>
Reviewed-by: Darren Hart (VMware) <dvhart@infradead.org>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

We are trying to get rid of DRIVER_ATTR(), and the pcmcia driver's
attribute can be trivially changed to use DRIVER_ATTR_RO().

Cc: Russell King <rmk+kernel@armlinux.org.uk>
Cc: <linux-pcmcia@lists.infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

We are trying to get rid of DRIVER_ATTR(), and the ipw2x00 driver's
attributes can be trivially changed to use DRIVER_ATTR_RW().

Cc: Stanislav Yakovlev <stas.yakovlev@gmail.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: <linux-wireless@vger.kernel.org>
Cc: <netdev@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

We are trying to get rid of DRIVER_ATTR(), and the ehea driver's
attribute can be trivially changed to use DRIVER_ATTR_RO().

Cc: Douglas Miller <dougmill@linux.vnet.ibm.com>
Cc: <netdev@vger.kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

We are trying to get rid of DRIVER_ATTR(), and the caif driver's
attributes can be trivially changed to use DRIVER_ATTR_RO().

Cc: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
Cc: <netdev@vger.kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

We are trying to get rid of DRIVER_ATTR(), and the hvc driver's
attribute can be trivially changed to use DRIVER_ATTR_RW().

Cc: Jiri Slaby <jslaby@suse.com>
Cc: <linuxppc-dev@lists.ozlabs.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

We are trying to get rid of DRIVER_ATTR(), and all of the pci-driver
core driver attributes can be trivially changed to use DRIVER_ATTR_WO().

Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: <linux-pci@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

We are trying to get rid of DRIVER_ATTR(), and all of the nes.c driver
attributes can be trivially changed to use DRIVER_ATTR_RW(), making the
code smaller and easier to manage over time.

Cc: Faisal Latif <faisal.latif@intel.com>
Cc: Doug Ledford <dledford@redhat.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Cc: <linux-rdma@vger.kernel.org>
Reviewed-by: Bart Van Assche <Bart.VanAssche@sandisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

In the quest to get rid of DRIVER_ATTR(), this patch converts the
hid-core code to use DRIVER_ATTR_RO() and also moves to use drv_groups
as creating individual sysfs files is not good (it races with userspace
notifications.)

Cc: Jiri Kosina <jikos@kernel.org>
Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: <linux-input@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Commit 71d1e5d7 ("arm: ecard: use dev_groups and not dev_attrs for bus_type")
had a typo in the resource attribute definition.  Fix that up.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 71d1e5d7 ("arm: ecard: use dev_groups and not dev_attrs for bus_type")
Cc: Russell King <linux@armlinux.org.uk>
Cc: <linux-arm-kernel@lists.infradead.org>
Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.

Cc: Rob Herring <robh@kernel.org>
Cc: Jiri Slaby <jslaby@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.
Acked-by: "David S. Miller" <davem@davemloft.net>
Cc: <sparclinux@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Jiri Kosina <jikos@kernel.org>
Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: Wei Yongjun <weiyj.lk@gmail.com>
Cc: Bhumika Goyal <bhumirks@gmail.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: <linux-input@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The dev_attrs field has long been "depreciated" and is finally being
removed, and as this driver isn't even using it, just drop the NULL
setting, it is pointless.

Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Johan Hovold <johan@kernel.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: <linuxppc-dev@lists.ozlabs.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.

Seems-ok: Geoff Levand <geoff@infradead.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: <linuxppc-dev@lists.ozlabs.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: <linuxppc-dev@lists.ozlabs.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.

Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: <linux-sh@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.

Cc: Ohad Ben-Cohen <ohad@wizery.com>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: <linux-remoteproc@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.

Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.

Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Doug Ledford <dledford@redhat.com>
Cc: <linux-parisc@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.

Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: <linux-mips@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.

Cc: Russell King <linux@armlinux.org.uk>
Cc: <linux-arm-kernel@lists.infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This field is no longer used or needed (use class_groups instead), so it
can be removed along with the driver core functionality that created and
removed these files.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The class_attrs pointer is long depreciated, and is about to be finally
removed, so move to use the class_groups pointer instead.

Cc: <linux-block@vger.kernel.org>
Acked-by: Jens Axboe <axboe@fb.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Mike Christie <mchristi@redhat.com>
Cc: Bart Van Assche <Bart.VanAssche@sandisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The class_attrs pointer is long depreciated, and is about to be finally
removed, so move to use the class_groups pointer instead.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: <linux-gpio@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The class_attrs pointer is long depreciated, and is about to be finally
removed, so move to use the class_groups pointer instead.

Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The class_attrs pointer is long depreciated, and is about to be finally
removed, so move to use the class_groups pointer instead.

Cc: Artem Bityutskiy <dedekind1@gmail.com>
Acked-by: Richard Weinberger <richard@nod.at>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
Cc: <linux-mtd@lists.infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The class_attrs pointer is going away and it's not even being used in
this driver, so just remove it entirely.
Acked-by: "Bryant G. Ly" <bryantly@linux.vnet.ibm.com>
Cc: Michael Cyr <mikecyr@linux.vnet.ibm.com>
Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: <linux-scsi@vger.kernel.org>
Cc: <target-devel@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The class_attrs pointer is long depreciated, and is about to be finally
removed, so move to use the class_groups pointer instead.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

There was only 2 remaining users of CLASS_ATTR() so let's finally get
rid of them and force everyone to use the correct RW/RO/WO versions
instead.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This moves the usermode helper locks into only code paths that use the
usermode helper API from the kernel. The usermode helper locks were
originally added to prevent stalling suspend, later the firmware cache
was added to help with this, and further later direct filesystem lookup
was added by Linus to completely bypass udev due to the amount of issues
the umh approach had.

The usermode helper locks were kept even when the direct filesystem lookup
mechanism is used though. A lot has changed since the original usermode
helper locks were added but the recent commit which added the code for
firmware_enabled() are intended to address any possible races cured only
as collateral by using the locks as though side consequence of code
evolution and this not being addressed any time sooner. With the
firmware_enabled() code in place we are a bit more sure to move the
usermode helper locks to UMH only code.

There is a bit of history here so let's recap a bit of it to ensure nothing
is lost and things are clear. The direct filesystem approach to loading
firmware is rather new, it was added via commit abb139e7 ("firmware:
teach the kernel to load firmware files directly from the filesystem") by
Linus merged on the v3.7 release, to enable to bypass udev.

usermodehelper_read_lock_wait() was added earlier via commit 9b78c1da
("firmware_class: Do not warn that system is not ready from async loads")
merged on v3.4, after Rafael noted that the async firmware API call
request_firmware_nowait() should not be penalized to fail if userspace is
not available yet or frozen, it'd allow for a timeout grace period before
giving up. The WARN_ON() was kept for the sync firmware API call though on
request_firmware(). At this time there was no direct filesystem lookup for
firmware though.

The original usermode helper lock came from commit a144c6a6 ("PM:
Print a warning if firmware is requested when tasks are frozen") merged on
the v3.0 kernel by Rafael to print a warning back when firmware requests
were used on resume(), thaw() or restore() callbacks and there was no
direct fs lookups or the firmware cache.
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This will make subsequent changes easier to read.
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The firmware API should not be used after we go to suspend
and after we reboot/halt. The suspend/resume case is a bit
complex, so this documents that so things are clearer.

We want to know about users of the API in incorrect places so
that their callers are corrected, so this also adds a warn
for those cases.
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>