user/sven/linux.git/include/linux/can/dev.h, branch v3.18.62

can: dev: fix deadlock reported after bus-off

2016-12-23T14:41:16Z

[ Upstream commit 9abefcb1aaa58b9d5aa40a8bb12c87d02415e4c8 ] A timer was used to restart after the bus-off state, leading to a relatively large can_restart() executed in an interrupt context, which in turn sets up pinctrl. When this happens during system boot, there is a high probability of grabbing the pinctrl_list_mutex, which is locked already by the probe() of other device, making the kernel suspect a deadlock condition [1]. To resolve this issue, the restart_timer is replaced by a delayed work. [1] https://github.com/victronenergy/venus/issues/24 Signed-off-by: Sergei Miroshnichenko Cc: linux-stable Signed-off-by: Marc Kleine-Budde Signed-off-by: Sasha Levin

can: fix handling of unmodifiable configuration options

2016-06-03T15:30:37Z

[ Upstream commit bb208f144cf3f59d8f89a09a80efd04389718907 ] As described in 'can: m_can: tag current CAN FD controllers as non-ISO' (6cfda7fbebe) it is possible to define fixed configuration options by setting the according bit in 'ctrlmode' and clear it in 'ctrlmode_supported'. This leads to the incovenience that the fixed configuration bits can not be passed by netlink even when they have the correct values (e.g. non-ISO, FD). This patch fixes that issue and not only allows fixed set bit values to be set again but now requires(!) to provide these fixed values at configuration time. A valid CAN FD configuration consists of a nominal/arbitration bittiming, a data bittiming and a control mode with CAN_CTRLMODE_FD set - which is now enforced by a new can_validate() function. This fix additionally removed the inconsistency that was prohibiting the support of 'CANFD-only' controller drivers, like the RCar CAN FD. For this reason a new helper can_set_static_ctrlmode() has been introduced to provide a proper interface to handle static enabled CAN controller options. Reported-by: Ramesh Shanmugasundaram Signed-off-by: Oliver Hartkopp Reviewed-by: Ramesh Shanmugasundaram Cc: # >= 3.18 Signed-off-by: Marc Kleine-Budde Signed-off-by: Sasha Levin

can: dev: add can_is_canfd_skb() API

2014-11-18T12:23:31Z

The CAN device drivers can use can_is_canfd_skb() to check if the frame to send is on CAN FD mode or normal CAN mode. Acked-by: Oliver Hartkopp Signed-off-by: Dong Aisheng Signed-off-by: Marc Kleine-Budde

can: unify identifiers to ensure unique include processing

2014-05-19T07:38:24Z

Armin pointed me to the fact that the identifier which is used to ensure the unique include processing in lunux/include/uapi/linux/can.h is CAN_H. This clashed with his own source as includes from libraries and APIs should use an underscore '_' at the identifier start. This patch fixes the protection identifiers in all CAN relavant includes. Reported-by: Armin Burchardt Signed-off-by: Oliver Hartkopp Signed-off-by: Marc Kleine-Budde

can: allow to change the device mtu for CAN FD capable devices

2014-03-07T08:18:23Z

The configuration for CAN FD depends on CAN_CTRLMODE_FD enabled in the driver specific ctrlmode_supported capabilities. The configuration can be done either with the 'fd { on | off }' option in the 'ip' tool from iproute2 or by setting the CAN netdevice MTU to CAN_MTU (16) or to CANFD_MTU (72). Signed-off-by: Oliver Hartkopp Acked-by: Stephane Grosjean Signed-off-by: Marc Kleine-Budde

can: introduce the data bitrate configuration for CAN FD

2014-03-07T08:18:22Z

As CAN FD offers a second bitrate for the data section of the CAN frame the infrastructure for storing and configuring this second bitrate is introduced. Improved the readability of the if-statement by inserting some newlines. Signed-off-by: Oliver Hartkopp Acked-by: Stephane Grosjean Signed-off-by: Marc Kleine-Budde

can: add ability to allocate CANFD frame in skb data

2014-02-04T08:34:33Z

This patch adds the ability of allocating a CANFD frame data structure in the skb data area. Signed-off-by: Stephane Grosjean Acked-by: Oliver Hartkopp Signed-off-by: Marc Kleine-Budde

can: export a safe netdev_priv wrapper for candev

2013-01-26T15:58:59Z

In net_device notifier calls, it was impossible to determine if a CAN device is based on candev in a safe way. This patch adds such test in order to access candev storage from within those notifiers. Signed-off-by: Kurt Van Dijck Acked-by: Oliver Hartkopp Signed-off-by: Fabio Baltieri Signed-off-by: Marc Kleine-Budde

can: add tx/rx LED trigger support

2013-01-26T15:58:59Z

This patch implements the functions to add two LED triggers, named -tx and -rx, to a canbus device driver. Triggers are called from specific handlers by each CAN device driver and can be disabled altogether with a Kconfig option. The implementation keeps the LED on when the interface is UP and blinks the LED on network activity at a configurable rate. This only supports can-dev based drivers, as it uses some support field in the can_priv structure. Supported drivers should call devm_can_led_init() and can_led_event() as needed. Cleanup is handled automatically by devres, so no *_exit function is needed. Supported events are: - CAN_LED_EVENT_OPEN: turn on tx/rx LEDs - CAN_LED_EVENT_STOP: turn off tx/rx LEDs - CAN_LED_EVENT_TX: trigger tx LED blink - CAN_LED_EVENT_RX: trigger tx LED blink Cc: Wolfgang Grandegger Cc: Marc Kleine-Budde Signed-off-by: Fabio Baltieri Acked-by: Oliver Hartkopp Signed-off-by: Marc Kleine-Budde

can: mark bittiming_const pointer in struct can_priv as const

2012-07-20T10:31:05Z

This patch marks the bittiming_const pointer as in the struct can_pric as "const". This allows us to mark the struct can_bittiming_const in the CAN drivers as "const", too. Signed-off-by: Marc Kleine-Budde