staging: comedi: ni_tiocmd: introduce ni_tio_acknowledge()

The external callers of ni_tio_acknowledge_and_confirm() only call
this function to ack any pending errors or interrupts before starting
a new async command. Only the internal code in ni_tiocmd uses the
data that is optionally returned by this function.

Remove the export from ni_tio_acknowledge_and_confirm() and introduce
a new exported function that handles passing the NULL params.

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>

4 files changed, 14 insertions, 9 deletions

diff --git a/drivers/staging/comedi/drivers/ni_660x.c b/drivers/staging/comedi/drivers/ni_660x.c
index 20fe692fd8f0..ef4a8f0fb29c 100644
--- a/drivers/staging/comedi/drivers/ni_660x.c
+++ b/drivers/staging/comedi/drivers/ni_660x.c
@@ -749,7 +749,7 @@ static int ni_660x_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 			"no dma channel available for use by counter\n");
 		return retval;
 	}
-	ni_tio_acknowledge_and_confirm(counter, NULL, NULL, NULL, NULL);
+	ni_tio_acknowledge(counter);
 
 	return ni_tio_cmd(dev, s);
 }
diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c
index 4285f0718012..888ec8ddf63b 100644
--- a/drivers/staging/comedi/drivers/ni_mio_common.c
+++ b/drivers/staging/comedi/drivers/ni_mio_common.c
@@ -5252,7 +5252,7 @@ static int ni_gpct_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 			"no dma channel available for use by counter\n");
 		return retval;
 	}
-	ni_tio_acknowledge_and_confirm(counter, NULL, NULL, NULL, NULL);
+	ni_tio_acknowledge(counter);
 	ni_e_series_enable_second_irq(dev, counter->counter_index, 1);
 
 	return ni_tio_cmd(dev, s);
diff --git a/drivers/staging/comedi/drivers/ni_tio.h b/drivers/staging/comedi/drivers/ni_tio.h
index 1056bf001e5e..25aedd0e5867 100644
--- a/drivers/staging/comedi/drivers/ni_tio.h
+++ b/drivers/staging/comedi/drivers/ni_tio.h
@@ -149,8 +149,6 @@ int ni_tio_cmdtest(struct comedi_device *, struct comedi_subdevice *,
 int ni_tio_cancel(struct ni_gpct *);
 void ni_tio_handle_interrupt(struct ni_gpct *, struct comedi_subdevice *);
 void ni_tio_set_mite_channel(struct ni_gpct *, struct mite_channel *);
-void ni_tio_acknowledge_and_confirm(struct ni_gpct *,
-				    int *gate_error, int *tc_error,
-				    int *perm_stale_data, int *stale_data);
+void ni_tio_acknowledge(struct ni_gpct *);
 
 #endif /* _COMEDI_NI_TIO_H */
diff --git a/drivers/staging/comedi/drivers/ni_tiocmd.c b/drivers/staging/comedi/drivers/ni_tiocmd.c
index c360667b1ba4..299ceddfb233 100644
--- a/drivers/staging/comedi/drivers/ni_tiocmd.c
+++ b/drivers/staging/comedi/drivers/ni_tiocmd.c
@@ -343,9 +343,11 @@ static int should_ack_gate(struct ni_gpct *counter)
 	return retval;
 }
 
-void ni_tio_acknowledge_and_confirm(struct ni_gpct *counter, int *gate_error,
-				    int *tc_error, int *perm_stale_data,
-				    int *stale_data)
+static void ni_tio_acknowledge_and_confirm(struct ni_gpct *counter,
+					   int *gate_error,
+					   int *tc_error,
+					   int *perm_stale_data,
+					   int *stale_data)
 {
 	unsigned cidx = counter->counter_index;
 	const unsigned short gxx_status = read_register(counter,
@@ -404,7 +406,12 @@ void ni_tio_acknowledge_and_confirm(struct ni_gpct *counter, int *gate_error,
 		}
 	}
 }
-EXPORT_SYMBOL_GPL(ni_tio_acknowledge_and_confirm);
+
+void ni_tio_acknowledge(struct ni_gpct *counter)
+{
+	ni_tio_acknowledge_and_confirm(counter, NULL, NULL, NULL, NULL);
+}
+EXPORT_SYMBOL_GPL(ni_tio_acknowledge);
 
 void ni_tio_handle_interrupt(struct ni_gpct *counter,
 			     struct comedi_subdevice *s)