kthread: Do not use TIMER_IRQSAFE
The TIMER_IRQSAFE usage was introduced in commit 22597dc3 ("kthread: initial support for delayed kthread work") which modelled the delayed kthread code after workqueue's code. The workqueue code requires the flag TIMER_IRQSAFE for synchronisation purpose. This is not true for kthread's delay timer since all operations occur under a lock. Remove TIMER_IRQSAFE from the timer initialisation and use timer_setup() for initialisation purpose which is the official function. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Link: https://lkml.kernel.org/r/20190212162554.19779-2-bigeasy@linutronix.de
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