diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2016-04-20 10:36:37 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-28 22:18:51 -0700 |
| commit | 4d88096df9ca49b71381eda90aa770c6db237f54 (patch) | |
| tree | ec62c2f98dfd0c7db6426030a2a7947989e1786f /drivers/staging/comedi/drivers/ni_tiocmd.c | |
| parent | 96f31530006492b2c753311431acf71df88b0cdd (diff) | |
staging: comedi: mite: introduce mite_ack_linkc()
Introduce a helper function to handle the ack of a LINKC interrupt.
Tidy up the drivers that use the new helper.
The extra check for CHSR_INT in the ni_pcidio driver is not necessary.
This bit will be set if any of the interrupt sources, including CHSR_LINKC,
have generated an interrupt. Remove the extra check.
The mite_get_status() function is now only used by the mite driver.
Make it static and remove the export.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi/drivers/ni_tiocmd.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/ni_tiocmd.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/staging/comedi/drivers/ni_tiocmd.c b/drivers/staging/comedi/drivers/ni_tiocmd.c index 3c3f5430e552..dc0b0f3d9db1 100644 --- a/drivers/staging/comedi/drivers/ni_tiocmd.c +++ b/drivers/staging/comedi/drivers/ni_tiocmd.c @@ -400,7 +400,6 @@ void ni_tio_handle_interrupt(struct ni_gpct *counter, struct comedi_subdevice *s) { unsigned int cidx = counter->counter_index; - unsigned int gpct_mite_status; unsigned long flags; int gate_error; int tc_error; @@ -429,16 +428,10 @@ void ni_tio_handle_interrupt(struct ni_gpct *counter, break; } spin_lock_irqsave(&counter->lock, flags); - if (!counter->mite_chan) { - spin_unlock_irqrestore(&counter->lock, flags); - return; + if (counter->mite_chan) { + mite_ack_linkc(counter->mite_chan); + mite_sync_input_dma(counter->mite_chan, s); } - gpct_mite_status = mite_get_status(counter->mite_chan); - if (gpct_mite_status & CHSR_LINKC) - writel(CHOR_CLRLC, - counter->mite_chan->mite->mite_io_addr + - MITE_CHOR(counter->mite_chan->channel)); - mite_sync_input_dma(counter->mite_chan, s); spin_unlock_irqrestore(&counter->lock, flags); } EXPORT_SYMBOL_GPL(ni_tio_handle_interrupt); |