7727ac725d
down() must not be used in softirq context: ``` [ 613.686994] BUG: sleeping function called from invalid context at ../kernel/locking/semaphore.c:58 [ 613.687003] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 29, name: ktimers/1 [ 613.687007] preempt_count: 0, expected: 0 [ 613.687009] RCU nest depth: 3, expected: 0 [ 613.687013] CPU: 1 PID: 29 Comm: ktimers/1 Tainted: G W OE 6.1.38-lp154.12-0601rt #1 1ef8e7f7e45a6388beff51e7b17265074b1375d6 [ 613.687020] Hardware name: ICP / iEi IMBA-9454ISA/IMBA-9454ISA(E168), BIOS 080014 02/20/2009 [ 613.687023] Call Trace: [ 613.687029] <TASK> [ 613.687034] dump_stack_lvl+0x44/0x5c [ 613.687046] __might_resched+0x171/0x1c0 [ 613.687055] ? check_slave_config_states+0x100/0x100 [ec_mini 7f93b9d1541d0037eab9400e73ee29f252250780] [ 613.687070] down+0x1e/0x70 [ 613.687076] cyclic_task+0x11/0xdc [ec_mini 7f93b9d1541d0037eab9400e73ee29f252250780] [ 613.687088] call_timer_fn+0x29/0x190 [ 613.687096] run_timer_softirq+0x4d5/0x570 [ 613.687104] ? __schedule+0x32b/0x1330 [ 613.687110] __do_softirq+0xd5/0x2ec [ 613.687117] ? smpboot_thread_fn+0x23/0x300 [ 613.687127] run_timersd+0x60/0xb0 [ 613.687130] smpboot_thread_fn+0x24c/0x300 [ 613.687133] ? smpboot_unregister_percpu_thread+0x70/0x70 [ 613.687135] kthread+0x129/0x140 [ 613.687138] ? kthread_complete_and_exit+0x20/0x20 [ 613.687141] ret_from_fork+0x22/0x30 [ 613.687146] </TASK> ``` |
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|---|---|---|
| .. | ||
| Kbuild.in | ||
| Makefile.am | ||
| README | ||
| mini.c | ||
README
------------------------------------------------------------------------------- $Id$ ------------------------------------------------------------------------------- This is a minimal example module for the use of the EtherCAT master realtime interface. It uses a kernel timer to generate a cyclic task. Most probably you'll have different EtherCAT slaves present. Try adjusting the section "process data" in mini.c to your bus configuration. There are some features that can be disabled by commenting out the respective defines at the head of mini.c. --- To build the example module, call: make modules To run it, call: insmod ec_mini.ko ...and watch the system logs for the outputs. -------------------------------------------------------------------------------