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| author | Arnd Bergmann <arnd@arndb.de> | 2014-02-26 12:01:43 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-03-13 14:56:38 -0600 |
| commit | 9c552e1ddd3658944787d75d90a42e1a2b74b7ea (patch) | |
| tree | 98601202f1367d58ec6a345fa24760fc8116e40f /drivers/block/DAC960.c | |
| parent | c94efe36e283f2837dd4a21eab4b3f8492e3f325 (diff) | |
| download | blackbird-op-linux-9c552e1ddd3658944787d75d90a42e1a2b74b7ea.tar.gz blackbird-op-linux-9c552e1ddd3658944787d75d90a42e1a2b74b7ea.zip | |
DAC960: remove sleep_on usage
sleep_on and its variants are going away. The use of sleep_on() in
DAC960_V2_ExecuteUserCommand seems to be bogus because the command
by the time we get there, the command has completed already and
we just enter the timeout. Based on this interpretation, I concluded
that we can replace it with a simple msleep(1000) and rearrange the
code around it slightly.
The interruptible_sleep_on_timeout in DAC960_gam_ioctl seems equivalent
to the race-free version using wait_event_interruptible_timeout.
I left the driver to return -EINTR rather than -ERESTARTSYS to preserve
the timeout behavior.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block/DAC960.c')
| -rw-r--r-- | drivers/block/DAC960.c | 34 |
1 files changed, 16 insertions, 18 deletions
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c index eb3950113e42..125d84505738 100644 --- a/drivers/block/DAC960.c +++ b/drivers/block/DAC960.c @@ -6411,12 +6411,12 @@ static bool DAC960_V2_ExecuteUserCommand(DAC960_Controller_T *Controller, .ScatterGatherSegments[0] .SegmentByteCount = CommandMailbox->ControllerInfo.DataTransferSize; - DAC960_ExecuteCommand(Command); - while (Controller->V2.NewControllerInformation->PhysicalScanActive) - { - DAC960_ExecuteCommand(Command); - sleep_on_timeout(&Controller->CommandWaitQueue, HZ); - } + while (1) { + DAC960_ExecuteCommand(Command); + if (!Controller->V2.NewControllerInformation->PhysicalScanActive) + break; + msleep(1000); + } DAC960_UserCritical("Discovery Completed\n", Controller); } } @@ -7035,18 +7035,16 @@ static long DAC960_gam_ioctl(struct file *file, unsigned int Request, ErrorCode = -EFAULT; break; } - while (Controller->V2.HealthStatusBuffer->StatusChangeCounter - == HealthStatusBuffer.StatusChangeCounter && - Controller->V2.HealthStatusBuffer->NextEventSequenceNumber - == HealthStatusBuffer.NextEventSequenceNumber) - { - interruptible_sleep_on_timeout(&Controller->HealthStatusWaitQueue, - DAC960_MonitoringTimerInterval); - if (signal_pending(current)) { - ErrorCode = -EINTR; - break; - } - } + ErrorCode = wait_event_interruptible_timeout(Controller->HealthStatusWaitQueue, + !(Controller->V2.HealthStatusBuffer->StatusChangeCounter + == HealthStatusBuffer.StatusChangeCounter && + Controller->V2.HealthStatusBuffer->NextEventSequenceNumber + == HealthStatusBuffer.NextEventSequenceNumber), + DAC960_MonitoringTimerInterval); + if (ErrorCode == -ERESTARTSYS) { + ErrorCode = -EINTR; + break; + } if (copy_to_user(GetHealthStatus.HealthStatusBuffer, Controller->V2.HealthStatusBuffer, sizeof(DAC960_V2_HealthStatusBuffer_T))) |
