| 1c12c270 | 25-Nov-2020 |
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
siox: Make remove callback return void
The driver core ignores the return value of the remove callback, so
don't give siox drivers the chance to provide a value.
All siox drivers only allocate devm
siox: Make remove callback return void
The driver core ignores the return value of the remove callback, so
don't give siox drivers the chance to provide a value.
All siox drivers only allocate devm-managed resources in
.probe, so there is no .remove callback to fix.
Tested-by: Thorsten Scherer <t.scherer@eckelmann.de>
Acked-by: Thorsten Scherer <t.scherer@eckelmann.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20201125093106.240643-3-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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| e8905914 | 28-Jun-2018 |
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
siox: don't create a thread without starting it
When a siox master device is registered a kthread is created that is
only started when triggered by userspace. So this thread might be in
TASK_UNINTER
siox: don't create a thread without starting it
When a siox master device is registered a kthread is created that is
only started when triggered by userspace. So this thread might be in
TASK_UNINTERRUPTIBLE state for long and trigger a warning
[ 241.130465] INFO: task siox-0:626 blocked for more than 120 seconds.
with the respective debug settings enabled. It might be right to put an
unstarted thread to TASK_IDLE (in kernel/kthread.c:kthread()) instead,
but independant of this discussion it is cleaner for
siox_master_register() to start the thread immediately. The effect is
that it enters its own waiting state and then stays in state TASK_IDLE
which doesn't trigger the above warning.
As siox_poll_thread() uses some variables of the device the
initialisation of these is moved before thread creation.
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Gavin Schenk <g.schenk@eckelmann.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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