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author | Cyril Bur <cyrilbur@gmail.com> | 2017-11-03 13:41:44 +1100 |
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committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-11-06 20:39:28 +1100 |
commit | 9aab24495c5644b25ced0d11816cc3c061bf74fc (patch) | |
tree | 0bfc7bd0fd117ac3c16263aec1f1019ccede50da /arch/powerpc/platforms/powernv/opal.c | |
parent | 95e1bc1daaeee4d598b235dc85b64b7a0bcc3060 (diff) |
powerpc/opal: Add opal_async_wait_response_interruptible() to opal-async
This patch adds an _interruptible version of opal_async_wait_response().
This is useful when a long running OPAL call is performed on behalf of
a userspace thread, for example, the opal_flash_{read,write,erase}
functions performed by the powernv-flash MTD driver.
It is foreseeable that these functions would take upwards of two
minutes causing the wait_event() to block long enough to cause hung
task warnings. Furthermore, wait_event_interruptible() is preferable
as otherwise there is no way for signals to stop the process which is
going to be confusing in userspace.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/platforms/powernv/opal.c')
0 files changed, 0 insertions, 0 deletions