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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-02-17 10:29:22 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-02-17 10:29:33 +0100 |
| commit | 656d9125376006cf696b0836f1c6723a892629ca (patch) | |
| tree | 0e5c7b817c01c408dc6edf28602c31a8b4fef299 /arch/s390 | |
| parent | 2320c5793790fcda80e6dcc088dbda86040235e5 (diff) | |
| download | linux-656d9125376006cf696b0836f1c6723a892629ca.tar.gz linux-656d9125376006cf696b0836f1c6723a892629ca.tar.bz2 linux-656d9125376006cf696b0836f1c6723a892629ca.zip | |
[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>
Diffstat (limited to 'arch/s390')
0 files changed, 0 insertions, 0 deletions