f299
parent 2320c5793790fcda80e6dcc088dbda86040235e5
author Martin Schwidefsky <schwidefsky@de.ibm.com> 1329470962 +0100
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1329470973 +0100

[S390] 3215 deadlock with tty_wakeup

The 3215 driver calls tty_wakeup from irq context while holding the
device spinlock. If printk is called by any function on the callchain
starting from tty_wakeup the system deadlocks on the device spinlock.
Using a tasklet to call tty_wakup solves the problem.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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