iio: Drop timestamp parameter from buffer store_to callback

Drop timestamp parameter from buffer store_to callback and subsequently from
iio_push_to_buffer. The timestamp parameter is unused and it seems likely that
it will stay unused in the future, so it should be safe to remove it.

Signed-off-by: Lars-Peter Clausen <[e-mail]>
Signed-off-by: Jonathan Cameron <[e-mail]>

drivers/iio/accel/hid-sensor-accel-3d.c

···
 static void hid_sensor_push_data(struct iio_dev *indio_dev, u8 *data, int len)
 {
 	struct iio_buffer *buffer = indio_dev->buffer;
-	s64 timestamp = iio_get_time_ns();
 	int datum_sz;
 
 	dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
···
 				datum_sz);
 		return;
 	}
-	iio_push_to_buffer(buffer, (u8 *)data, timestamp);
+	iio_push_to_buffer(buffer, (u8 *)data);
 }
 
 /* Callback handler to send event after all samples are received and captured */

drivers/iio/adc/ad7266.c

···
 	if (ret == 0) {
 		if (indio_dev->scan_timestamp)
 			((s64 *)st->data)[1] = pf->timestamp;
-		iio_push_to_buffer(buffer, (u8 *)st->data, pf->timestamp);
+		iio_push_to_buffer(buffer, (u8 *)st->data);
 	}
 
 	iio_trigger_notify_done(indio_dev->trig);

drivers/iio/adc/ad_sigma_delta.c

···
 		break;
 	}
 
-	iio_push_to_buffer(indio_dev->buffer, (uint8_t *)data, pf->timestamp);
+	iio_push_to_buffer(indio_dev->buffer, (uint8_t *)data);
 
 	iio_trigger_notify_done(indio_dev->trig);
 	sigma_delta->irq_dis = false;

drivers/iio/adc/at91_adc.c

···
 		*timestamp = pf->timestamp;
 	}
 
-	buffer->access->store_to(buffer, (u8 *)st->buffer, pf->timestamp);
+	buffer->access->store_to(buffer, (u8 *)st->buffer);
 
 	iio_trigger_notify_done(idev->trig);
 	st->irq_enabled = true;

drivers/iio/gyro/hid-sensor-gyro-3d.c

···
 static void hid_sensor_push_data(struct iio_dev *indio_dev, u8 *data, int len)
 {
 	struct iio_buffer *buffer = indio_dev->buffer;
-	s64 timestamp = iio_get_time_ns();
 	int datum_sz;
 
 	dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
···
 				datum_sz);
 		return;
 	}
-	iio_push_to_buffer(buffer, (u8 *)data, timestamp);
+	iio_push_to_buffer(buffer, (u8 *)data);
 }
 
 /* Callback handler to send event after all samples are received and captured */

drivers/iio/industrialio-buffer.c

···
 	return buffer->demux_bounce;
 }
 
-int iio_push_to_buffer(struct iio_buffer *buffer, unsigned char *data,
-		       s64 timestamp)
+int iio_push_to_buffer(struct iio_buffer *buffer, unsigned char *data)
 {
 	unsigned char *dataout = iio_demux(buffer, data);
 
-	return buffer->access->store_to(buffer, dataout, timestamp);
+	return buffer->access->store_to(buffer, dataout);
 }
 EXPORT_SYMBOL_GPL(iio_push_to_buffer);
 

drivers/iio/kfifo_buf.c

···
 }
 
 static int iio_store_to_kfifo(struct iio_buffer *r,
-			      u8 *data,
-			      s64 timestamp)
+			      u8 *data)
 {
 	int ret;
 	struct iio_kfifo *kf = iio_to_kfifo(r);

drivers/iio/light/adjd_s311.c

···
 	if (indio_dev->scan_timestamp)
 		*(s64 *)((u8 *)data->buffer + ALIGN(len, sizeof(s64)))
 			= time_ns;
-	iio_push_to_buffer(buffer, (u8 *)data->buffer, time_ns);
+	iio_push_to_buffer(buffer, (u8 *)data->buffer);
 
 done:
 	iio_trigger_notify_done(indio_dev->trig);

drivers/iio/light/hid-sensor-als.c

···
 static void hid_sensor_push_data(struct iio_dev *indio_dev, u8 *data, int len)
 {
 	struct iio_buffer *buffer = indio_dev->buffer;
-	s64 timestamp = iio_get_time_ns();
 	int datum_sz;
 
 	dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
···
 				datum_sz);
 		return;
 	}
-	iio_push_to_buffer(buffer, (u8 *)data, timestamp);
+	iio_push_to_buffer(buffer, (u8 *)data);
 }
 
 /* Callback handler to send event after all samples are received and captured */

drivers/iio/magnetometer/hid-sensor-magn-3d.c

···
 static void hid_sensor_push_data(struct iio_dev *indio_dev, u8 *data, int len)
 {
 	struct iio_buffer *buffer = indio_dev->buffer;
-	s64 timestamp = iio_get_time_ns();
 	int datum_sz;
 
 	dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
···
 				datum_sz);
 		return;
 	}
-	iio_push_to_buffer(buffer, (u8 *)data, timestamp);
+	iio_push_to_buffer(buffer, (u8 *)data);
 }
 
 /* Callback handler to send event after all samples are received and captured */

drivers/staging/iio/accel/adis16201_ring.c

···
 	if (indio_dev->scan_timestamp)
 		*((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
 
-	iio_push_to_buffer(indio_dev->buffer, (u8 *)data, pf->timestamp);
+	iio_push_to_buffer(indio_dev->buffer, (u8 *)data);
 
 	kfree(data);
 done:

drivers/staging/iio/accel/adis16203_ring.c

···
 	if (indio_dev->scan_timestamp)
 		*((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
 
-	iio_push_to_buffer(indio_dev->buffer, (u8 *)data, pf->timestamp);
+	iio_push_to_buffer(indio_dev->buffer, (u8 *)data);
 
 	kfree(data);
 done:

drivers/staging/iio/accel/adis16204_ring.c

···
 	if (indio_dev->scan_timestamp)
 		*((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
 
-	iio_push_to_buffer(indio_dev->buffer, (u8 *)data, pf->timestamp);
+	iio_push_to_buffer(indio_dev->buffer, (u8 *)data);
 
 	kfree(data);
 done:

drivers/staging/iio/accel/adis16209_ring.c

···
 	if (indio_dev->scan_timestamp)
 		*((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
 
-	iio_push_to_buffer(indio_dev->buffer, (u8 *)data, pf->timestamp);
+	iio_push_to_buffer(indio_dev->buffer, (u8 *)data);
 
 	kfree(data);
 done:

drivers/staging/iio/accel/adis16240_ring.c

···
 	if (indio_dev->scan_timestamp)
 		*((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
 
-	iio_push_to_buffer(indio_dev->buffer, (u8 *)data, pf->timestamp);
+	iio_push_to_buffer(indio_dev->buffer, (u8 *)data);
 
 	kfree(data);
 done:

drivers/staging/iio/accel/lis3l02dq_ring.c

···
 	if (indio_dev->scan_timestamp)
 		*(s64 *)((u8 *)data + ALIGN(len, sizeof(s64)))
 			= pf->timestamp;
-	iio_push_to_buffer(indio_dev->buffer, (u8 *)data, pf->timestamp);
+	iio_push_to_buffer(indio_dev->buffer, (u8 *)data);
 
 	kfree(data);
 done:

drivers/staging/iio/adc/ad7298_ring.c

···
 						 indio_dev->masklength); i++)
 		buf[i] = be16_to_cpu(st->rx_buf[i]);
 
-	iio_push_to_buffer(indio_dev->buffer, (u8 *)buf, time_ns);
+	iio_push_to_buffer(indio_dev->buffer, (u8 *)buf);
 
 done:
 	iio_trigger_notify_done(indio_dev->trig);

drivers/staging/iio/adc/ad7476_ring.c

···
 		memcpy(rxbuf + indio_dev->scan_bytes - sizeof(s64),
 			&time_ns, sizeof(time_ns));
 
-	iio_push_to_buffer(indio_dev->buffer, rxbuf, time_ns);
+	iio_push_to_buffer(indio_dev->buffer, rxbuf);
 done:
 	iio_trigger_notify_done(indio_dev->trig);
 	kfree(rxbuf);

drivers/staging/iio/adc/ad7606_ring.c

···
 	if (indio_dev->scan_timestamp)
 		*((s64 *)(buf + indio_dev->scan_bytes - sizeof(s64))) = time_ns;
 
-	iio_push_to_buffer(indio_dev->buffer, buf, time_ns);
+	iio_push_to_buffer(indio_dev->buffer, buf);
 done:
 	gpio_set_value(st->pdata->gpio_convst, 0);
 	iio_trigger_notify_done(indio_dev->trig);

drivers/staging/iio/adc/ad7887_ring.c

···
 		memcpy(buf + indio_dev->scan_bytes - sizeof(s64),
 		       &time_ns, sizeof(time_ns));
 
-	iio_push_to_buffer(indio_dev->buffer, buf, time_ns);
+	iio_push_to_buffer(indio_dev->buffer, buf);
 done:
 	kfree(buf);
 	iio_trigger_notify_done(indio_dev->trig);

drivers/staging/iio/adc/ad799x_ring.c

···
 		memcpy(rxbuf + indio_dev->scan_bytes - sizeof(s64),
 			&time_ns, sizeof(time_ns));
 
-	iio_push_to_buffer(indio_dev->buffer, rxbuf, time_ns);
+	iio_push_to_buffer(indio_dev->buffer, rxbuf);
 done:
 	kfree(rxbuf);
 out:

drivers/staging/iio/adc/max1363_ring.c

···
 
 	if (indio_dev->scan_timestamp)
 		memcpy(rxbuf + d_size - sizeof(s64), &time_ns, sizeof(time_ns));
-	iio_push_to_buffer(indio_dev->buffer, rxbuf, time_ns);
+	iio_push_to_buffer(indio_dev->buffer, rxbuf);
 
 done_free:
 	kfree(rxbuf);

drivers/staging/iio/adc/mxs-lradc.c

···
 		*timestamp = pf->timestamp;
 	}
 
-	iio_push_to_buffer(buffer, (u8 *)lradc->buffer, pf->timestamp);
+	iio_push_to_buffer(buffer, (u8 *)lradc->buffer);
 
 	iio_trigger_notify_done(iio->trig);
 

drivers/staging/iio/gyro/adis16260_ring.c

···
 	if (indio_dev->scan_timestamp)
 		*((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
 
-	iio_push_to_buffer(indio_dev->buffer, (u8 *)data, pf->timestamp);
+	iio_push_to_buffer(indio_dev->buffer, (u8 *)data);
 
 	kfree(data);
 done:

drivers/staging/iio/iio_simple_dummy_buffer.c

···
 	if (indio_dev->scan_timestamp)
 		*(s64 *)((u8 *)data + ALIGN(len, sizeof(s64)))
 			= iio_get_time_ns();
-	iio_push_to_buffer(buffer, (u8 *)data, pf->timestamp);
+	iio_push_to_buffer(buffer, (u8 *)data);
 
 	kfree(data);
 

drivers/staging/iio/impedance-analyzer/ad5933.c

···
 			buf[0] = be16_to_cpu(buf[0]);
 		}
 		/* save datum to the ring */
-		iio_push_to_buffer(ring, (u8 *)buf, iio_get_time_ns());
+		iio_push_to_buffer(ring, (u8 *)buf);
 	} else {
 		/* no data available - try again later */
 		schedule_delayed_work(&st->work, st->poll_time_jiffies);

drivers/staging/iio/imu/adis16400_ring.c

···
 	/* Guaranteed to be aligned with 8 byte boundary */
 	if (ring->scan_timestamp)
 		*((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
-	iio_push_to_buffer(ring, (u8 *) data, pf->timestamp);
+	iio_push_to_buffer(ring, (u8 *) data);
 
 done:
 	kfree(data);

drivers/staging/iio/meter/ade7758_ring.c

···
 	if (indio_dev->scan_timestamp)
 		dat64[1] = pf->timestamp;
 
-	iio_push_to_buffer(indio_dev->buffer, (u8 *)dat64, pf->timestamp);
+	iio_push_to_buffer(indio_dev->buffer, (u8 *)dat64);
 
 	iio_trigger_notify_done(indio_dev->trig);
 

drivers/staging/iio/ring_sw.c

···
 /* Lock always held if their is a chance this may be called */
 /* Only one of these per ring may run concurrently - enforced by drivers */
 static int iio_store_to_sw_ring(struct iio_sw_ring_buffer *ring,
-				unsigned char *data, s64 timestamp)
+				unsigned char *data)
 {
 	int ret = 0;
 	unsigned char *temp_ptr, *change_test_ptr;
···
 }
 
 static int iio_store_to_sw_rb(struct iio_buffer *r,
-			      u8 *data,
-			      s64 timestamp)
+			      u8 *data)
 {
 	struct iio_sw_ring_buffer *ring = iio_to_sw_ring(r);
-	return iio_store_to_sw_ring(ring, data, timestamp);
+	return iio_store_to_sw_ring(ring, data);
 }
 
 static int iio_request_update_sw_rb(struct iio_buffer *r)

include/linux/iio/buffer.h

···
  * any of them not existing.
  **/
 struct iio_buffer_access_funcs {
-	int (*store_to)(struct iio_buffer *buffer, u8 *data, s64 timestamp);
+	int (*store_to)(struct iio_buffer *buffer, u8 *data);
 	int (*read_first_n)(struct iio_buffer *buffer,
 			    size_t n,
 			    char __user *buf);
···
  * iio_push_to_buffer() - push to a registered buffer.
  * @buffer:		IIO buffer structure for device
  * @data:		the data to push to the buffer
- * @timestamp:		timestamp to associate with the data
  */
-int iio_push_to_buffer(struct iio_buffer *buffer, unsigned char *data,
-		       s64 timestamp);
+int iio_push_to_buffer(struct iio_buffer *buffer, unsigned char *data);
 
 int iio_update_demux(struct iio_dev *indio_dev);