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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2016-09-28 13:36:19 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-09-30 09:13:11 +0200 |
| commit | d53c51f26145657aa7c55fa396f93677e613548d (patch) | |
| tree | 0d76b2a11aa079c9f532a8457524f61d29ffd297 /include | |
| parent | 871f8bf0c477ef20ac1457bb241416d7d8749732 (diff) | |
s390/cio: fix accidental interrupt enabling during resume
Since commit 9f3d6d7 chsc_get_channel_measurement_chars is called with
interrupts disabled during resume from hibernate. Since this function
used spin_unlock_irq, interrupts have been enabled accidentally. Fix
this by using the irqsave variant.
Since we can't guarantee the IRQ-enablement state for all (future/
external) callers, change the locking in related functions to prevent
similar bugs in the future.
Fixes: 9f3d6d7 ("s390/cio: update measurement characteristics")
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions