kernel/drivers/net/can/flexcan.c, branch linux-4.1.y

can: flexcan: fix resume function

2016-10-03T12:35:19Z

[ Upstream commit 4de349e786a3a2d51bd02d56f3de151bbc3c3df9 ] On a imx6ul-pico board the following error is seen during system suspend: dpm_run_callback(): platform_pm_resume+0x0/0x54 returns -110 PM: Device 2090000.flexcan failed to resume: error -110 The reason for this suspend error is because when the CAN interface is not active the clocks are disabled and then flexcan_chip_enable() will always fail due to a timeout error. In order to fix this issue, only call flexcan_chip_enable/disable() when the CAN interface is active. Based on a patch from Dong Aisheng in the NXP kernel. Signed-off-by: Fabio Estevam Cc: linux-stable Signed-off-by: Marc Kleine-Budde Signed-off-by: Sasha Levin

can: flexcan: Deferred on Regulator return EPROBE_DEFER

2015-03-22T18:20:10Z

Return EPROBE_DEFER if Regulator returns EPROBE_DEFER If the Flexcan driver is built into kernel and a regulator is used to enable the CAN transceiver, the Flexcan driver may not use the regulator. When initializing the Flexcan device with a regulator defined in the device tree, but not initialized, the regulator subsystem returns EPROBE_DEFER, hence the Flexcan init fails. The solution for this is to return EPROBE_DEFER if regulator is not initialized and wait until the regulator is initialized. Signed-off-by: Andreas Werner Cc: linux-stable Signed-off-by: Marc Kleine-Budde

can: flexcan: fix bus-off error state handling.

2015-03-22T17:14:51Z

Making sure that the bus-off state gets passed to can_change_state(). Signed-off-by: Andri Yngvason Cc: linux-stable Signed-off-by: Marc Kleine-Budde

can: flexcan: remove unused variable

2015-01-21T21:47:44Z

This patch removes the unused variable "struct net_device *dev" from the "struct flexcan_priv". Signed-off-by: Marc Kleine-Budde

Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2014-12-15T00:10:09Z

Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev__once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...

can: flexcan: Consolidate and unify state change handling

2014-12-07T20:22:10Z

Replacing error state change handling with the new mechanism. Signed-off-by: Andri Yngvason Acked-by: Wolfgang Grandegger Signed-off-by: Marc Kleine-Budde

net: can: drop owner assignment from platform_drivers

2014-10-20T14:20:59Z

A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2014-09-23T16:09:27Z

Conflicts: arch/mips/net/bpf_jit.c drivers/net/can/flexcan.c Both the flexcan and MIPS bpf_jit conflicts were cases of simple overlapping changes. Signed-off-by: David S. Miller

can: flexcan: increase FLEXCAN_MCR_MAXMB() macro to 7 bits

2014-09-18T09:15:36Z

This patch increases the mask in the FLEXCAN_MCR_MAXMB() to 7 bits as in the newer flexcan cores the MAXMB field is 7 bits wide. Reported-by: David Jander Signed-off-by: Marc Kleine-Budde

can: flexcan: put TX mailbox into TX_INACTIVE mode after tx-complete

2014-09-18T09:15:27Z

After sending a RTR frame the TX mailbox becomes a RX_EMPTY mailbox. To avoid side effects when the RX-FIFO is full, this patch puts the TX mailbox into TX_INACTIVE mode in the transmission complete interrupt handler. This, of course, leaves a race window between the actual completion of the transmission and the handling of tx-complete interrupt. However this is the best we can do without busy polling the tx complete interrupt. Cc: linux-stable Signed-off-by: Marc Kleine-Budde