This patch removes the Kconfig symbol HAVE_CAN_FLEXCAN from arch/{arm,powerpc}
and allowing compilation unconditionally on all arm and powerpc platforms.

This brings a bigger compile time coverage and removes the following dependency
warning found by Arnd Bergmann:

    warning: (SOC_IMX28 && SOC_IMX25 && SOC_IMX35 && IMX_HAVE_PLATFORM_FLEXCAN &&
        SOC_IMX53 && SOC_IMX6Q) selects HAVE_CAN_FLEXCAN
    which has unmet direct dependencies (NET && CAN && CAN_DEV)
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: NShawn Guo <shawn.guo@linaro.org>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Using SIMPLE_DEV_PM_OPS can make the code smaller and simpler.

Also change CONFIG_PM to CONFIG_PM_SLEEP.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Since commit ab78029e (drivers/pinctrl: grab default handles from device core)
we can rely on device core for handling pinctrl, so remove
devm_pinctrl_get_select_default() from the driver.

Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: <linux-can@vger.kernel.org>
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

The usage of strict_strtoul() is not preferred, because
strict_strtoul() is obsolete. Thus, kstrtoul() should be
used.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

So far, only net_device * could be passed along with netdevice notifier
event. This patch provides a possibility to pass custom structure
able to provide info that event listener needs to know.
Signed-off-by: NJiri Pirko <jiri@resnulli.us>

v2->v3: fix typo on simeth
	shortened dev_getter
	shortened notifier_info struct name
v1->v2: fix notifier_call parameter in call_netdevice_notifier()
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d063
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d063
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d063
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d063
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Replace a call to deprecated devm_request_and_ioremap by devm_ioremap_resource.
dev_err() message is no more needed since it's already displayed in
devm_ioremap_resource().
Signed-off-by: NLaurent Navet <laurent.navet@gmail.com>
Acked-by: NAndreas Larsson <andreas@gaisler.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

SIMPLE_DEV_PM_OPS macro can handle !CONFIG_PM_SLEEP case nicely, so there is no
need to define PM_OPS for both CONFIG_PM_SLEEP and !CONFIG_PM_SLEEP cases.

Remove the unneeded definitions.

Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Acked-by: NMarc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This is a follow up patch to:

    f901b6bc can: sja1000: fix define conflict on SH

That patch fixed a define conflict between the SH architecture and the sja1000
driver, by addind a prefix to one macro only. This patch consistently renames
the prefix of the SJA1000 controller registers from "REG_" to "SJA1000_".
Signed-off-by: NOliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

To get correct endianes on little endian cpus (like arm) while reading device
tree properties, this patch replaces of_get_property() with
of_property_read_u32(). While there use of_property_read_bool() for the
handling of the boolean "nxp,no-comparator-bypass" property.

Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: NChristoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Since commit:

    1c6c6952 genirq: Reject bogus threaded irq requests

threaded irqs must provide a primary handler or set the IRQF_ONESHOT flag.
Since the mcp251x driver doesn't make use of a primary handler set the
IRQF_ONESHOT flag.

Cc: linux-stable <stable@vger.kernel.org> # >= v3.5
Reported-by: NMylene Josserand <Mylene.Josserand@navocap.com>
Tested-by: NMylene Josserand <Mylene.Josserand@navocap.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Use the wrapper functions for getting and setting the driver data using
spi_device instead of using dev_{get|set}_drvdata with &spi->dev, so we
can directly pass a struct spi_device.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch limits the PEAK PCAN-PC Card driver to systems with ioports. Fixes a
compile time breakage on SH:

    drivers/net/can/sja1000/peak_pcmcia.c:626:2: error:
        implicit declaration of function 'ioport_unmap'
Reported-by: NFengguang Wu <fengguang.wu@intel.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Thias patch fixes a define conflict between the SH architecture and the sja1000
driver:

    drivers/net/can/sja1000/sja1000.h:59:0: warning:
        "REG_SR" redefined [enabled by default]
    arch/sh/include/asm/ptrace_32.h:25:0: note:
         this is the location of the previous definition

A SJA1000_ prefix is added to the offending sja1000 define only, to make a
minimal patch suited for stable. A later patch will add a SJA1000_ prefix to
all defines in sja1000.h.

Cc: linux-stable <stable@vger.kernel.org>
Reported-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

This patch fixes the following sparse warning:

drivers/net/can/bfin_can.c:415:13: warning: symbol 'bfin_can_interrupt' was not declared. Should it be static?
drivers/net/can/bfin_can.c:507:19: warning: symbol 'alloc_bfin_candev' was not declared. Should it be static?
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Use dev_pm_ops instead of the deprecated legacy suspend/resume callbacks.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

By using module_spi_driver we can eliminate a few lines of boilerplate code.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

In ancient times it was necessary to manually initialize the bus field of an
spi_driver to spi_bus_type. These days this is done in spi_driver_register() so
we can drop the manual assignment.

The patch was generated using the following coccinelle semantic patch:
// <smpl>
@@
identifier _driver;
@@
struct spi_driver _driver = {
	.driver = {
-		.bus = &spi_bus_type,
	},
};
// </smpl>
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Acked-by: NMarc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

SAMA5D3 devices also embed CAN feature. Moreover if we want to produce a single
kernel image it is not useful to be too restrictive.
Signed-off-by: NLudovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Add device tree support.
Signed-off-by: NLudovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Reported-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NKurt Van Dijck <kurt.van.dijck@eia.be>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NKurt Van Dijck <kurt.van.dijck@eia.be>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NKurt Van Dijck <kurt.van.dijck@eia.be>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Use the new module_pcmcia_driver() macro to remove the boilerplate
module init/exit code in the pcmcia drivers.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

alloc failures already get standardized OOM
messages and a dump_stack.

For the affected mallocs around these OOM messages:

Converted kmallocs with multiplies to kmalloc_array.
Converted a kmalloc/memcpy to kmemdup.
Removed now unused stack variables.
Removed unnecessary parentheses.
Neatened alignment.
Signed-off-by: NJoe Perches <joe@perches.com>
Acked-by: NArend van Spriel <arend@broadcom.com>
Acked-by: NMarc Kleine-Budde <mkl@pengutronix.de>
Acked-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

alloc failures already get standardized OOM
messages and a dump_stack.
Signed-off-by: NJoe Perches <joe@perches.com>
Acked-by: NMarc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

According to C_CAN documentation, the reserved bit in IFx_MASK2 register is
fixed 1.

Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: NAlexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Added accessor and skb_reserve helpers for struct can_skb_priv.
Removed pointless skb_headroom() check.
Signed-off-by: NOliver Hartkopp <socketcan@hartkopp.net>
CC: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Errors in CAN protocol (location) are reported in data[3] of the can
frame instead of data[2].

Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: NOlivier Sobrie <olivier@sobrie.be>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Errors in CAN protocol (location) are reported in data[3] of the can
frame instead of data[2].

Cc: linux-stable <stable@vger.kernel.org>
Cc: Anant Gole <anantgole@ti.com>
Signed-off-by: NOlivier Sobrie <olivier@sobrie.be>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Errors in CAN protocol (location) are reported in data[3] of the can
frame instead of data[2].

Cc: linux-stable <stable@vger.kernel.org>
Cc: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: NOlivier Sobrie <olivier@sobrie.be>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

The struct can_skb_priv is used to transport additional information along
with the stored struct can(fd)_frame that can not be contained in existing
struct sk_buff elements.

can_skb_priv is located in the skb headroom, which does not touch the existing
CAN sk_buff usage with skb->data and skb->len, so that even out-of-tree
CAN drivers can be used without changes.

Btw. out-of-tree CAN drivers without can_skb_priv in the sk_buff headroom
would not support features based on can_skb_priv.

The can_skb_priv->ifindex contains the first interface where the CAN frame
appeared on the local host. Unfortunately skb->skb_iif can not be used as this
value is overwritten in every netif_receive_skb() call.
Signed-off-by: NOliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Add support for canbus activity led indicators on usb_8dev devices by
calling appropriate can_led functions.

These are only enabled when CONFIG_CAN_LEDS is Y, becomes no-op
otherwise.
Signed-off-by: NBernd Krumboeck <krumboeck@universalnet.at>
Signed-off-by: NFabio Baltieri <fabio.baltieri@gmail.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Add support for canbus activity led indicators on sja1000 devices by
calling appropriate can_led functions.

These are only enabled when CONFIG_CAN_LEDS is Y, becomes no-op
otherwise.

Cc: Oliver Hartkopp <socketcan@hartkopp.net>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: NFabio Baltieri <fabio.baltieri@gmail.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Add support for canbus activity led indicators on mcp251x devices by
calling appropriate can_led functions.

These are only enabled when CONFIG_CAN_LEDS is Y, becomes no-op
otherwise.

Cc: Christian Pellegrin <chripell@fsfe.org>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: NFabio Baltieri <fabio.baltieri@gmail.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Add support for canbus activity led indicators on c_can devices by
calling appropriate can_led functions.

These are only enabled when CONFIG_CAN_LEDS is Y, becomes no-op
otherwise.

Cc: Bhupesh Sharma <bhupesh.sharma@st.com>
Cc: AnilKumar Ch <anilkumar@ti.com>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: NFabio Baltieri <fabio.baltieri@gmail.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

Add support for canbus activity led indicators on ti_hecc devices by
calling appropriate can_led functions.

These are only enabled when CONFIG_CAN_LEDS is Y, becomes no-op
otherwise.

Cc: Anant Gole <anantgole@ti.com>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: NFabio Baltieri <fabio.baltieri@gmail.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>