Re: [PATCH] staging:iio:drivers stop enabling the timestamp for buffers at start time.

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On 12/14/2011 10:27 PM, Jonathan Cameron wrote:
> This should always be userspace controlled and these defaults are
> unpredictable and make for rather pointlessly complex code when
> handling multiple buffers.
> 
> The equivalent code for setting up default channels for scans has
> long since gone.
> 
> Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>

As discussed before:

Acked-by: Lars-Peter Clausen <lars@xxxxxxxxxx>

> ---
>  drivers/staging/iio/accel/adis16201_ring.c    |    1 -
>  drivers/staging/iio/accel/adis16203_ring.c    |    1 -
>  drivers/staging/iio/accel/adis16204_ring.c    |    1 -
>  drivers/staging/iio/accel/adis16209_ring.c    |    1 -
>  drivers/staging/iio/accel/adis16240_ring.c    |    1 -
>  drivers/staging/iio/accel/lis3l02dq_ring.c    |    1 -
>  drivers/staging/iio/adc/ad7298_ring.c         |    1 -
>  drivers/staging/iio/adc/ad7476_ring.c         |    1 -
>  drivers/staging/iio/adc/ad7606_ring.c         |    1 -
>  drivers/staging/iio/adc/ad799x_ring.c         |    1 -
>  drivers/staging/iio/gyro/adis16260_ring.c     |    1 -
>  drivers/staging/iio/iio_simple_dummy_buffer.c |    3 ---
>  drivers/staging/iio/imu/adis16400_ring.c      |    1 -
>  13 files changed, 0 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/staging/iio/accel/adis16201_ring.c b/drivers/staging/iio/accel/adis16201_ring.c
> index 26c610f..dedfb44 100644
> --- a/drivers/staging/iio/accel/adis16201_ring.c
> +++ b/drivers/staging/iio/accel/adis16201_ring.c
> @@ -116,7 +116,6 @@ int adis16201_configure_ring(struct iio_dev *indio_dev)
>  	}
>  	indio_dev->buffer = ring;
>  	/* Effectively select the ring buffer implementation */
> -	ring->scan_timestamp = true;
>  	ring->access = &ring_sw_access_funcs;
>  	indio_dev->setup_ops = &adis16201_ring_setup_ops;
>  
> diff --git a/drivers/staging/iio/accel/adis16203_ring.c b/drivers/staging/iio/accel/adis16203_ring.c
> index 064640d..8037ae9 100644
> --- a/drivers/staging/iio/accel/adis16203_ring.c
> +++ b/drivers/staging/iio/accel/adis16203_ring.c
> @@ -118,7 +118,6 @@ int adis16203_configure_ring(struct iio_dev *indio_dev)
>  	}
>  	indio_dev->buffer = ring;
>  	/* Effectively select the ring buffer implementation */
> -	ring->scan_timestamp = true;
>  	ring->access = &ring_sw_access_funcs;
>  	indio_dev->setup_ops = &adis16203_ring_setup_ops;
>  
> diff --git a/drivers/staging/iio/accel/adis16204_ring.c b/drivers/staging/iio/accel/adis16204_ring.c
> index 4081179..56fb9d0 100644
> --- a/drivers/staging/iio/accel/adis16204_ring.c
> +++ b/drivers/staging/iio/accel/adis16204_ring.c
> @@ -114,7 +114,6 @@ int adis16204_configure_ring(struct iio_dev *indio_dev)
>  	indio_dev->buffer = ring;
>  	/* Effectively select the ring buffer implementation */
>  	ring->access = &ring_sw_access_funcs;
> -	ring->scan_timestamp = true;
>  	indio_dev->setup_ops = &adis16204_ring_setup_ops;
>  
>  	indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
> diff --git a/drivers/staging/iio/accel/adis16209_ring.c b/drivers/staging/iio/accel/adis16209_ring.c
> index 2a6fd334..55f0409 100644
> --- a/drivers/staging/iio/accel/adis16209_ring.c
> +++ b/drivers/staging/iio/accel/adis16209_ring.c
> @@ -115,7 +115,6 @@ int adis16209_configure_ring(struct iio_dev *indio_dev)
>  	indio_dev->buffer = ring;
>  	/* Effectively select the ring buffer implementation */
>  	ring->access = &ring_sw_access_funcs;
> -	ring->scan_timestamp = true;
>  	indio_dev->setup_ops = &adis16209_ring_setup_ops;
>  
>  	indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
> diff --git a/drivers/staging/iio/accel/adis16240_ring.c b/drivers/staging/iio/accel/adis16240_ring.c
> index e23622d..16e6431 100644
> --- a/drivers/staging/iio/accel/adis16240_ring.c
> +++ b/drivers/staging/iio/accel/adis16240_ring.c
> @@ -112,7 +112,6 @@ int adis16240_configure_ring(struct iio_dev *indio_dev)
>  	indio_dev->buffer = ring;
>  	/* Effectively select the ring buffer implementation */
>  	ring->access = &ring_sw_access_funcs;
> -	ring->scan_timestamp = true;
>  	indio_dev->setup_ops = &adis16240_ring_setup_ops;
>  
>  	indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
> diff --git a/drivers/staging/iio/accel/lis3l02dq_ring.c b/drivers/staging/iio/accel/lis3l02dq_ring.c
> index 98c5c92..6e24de1 100644
> --- a/drivers/staging/iio/accel/lis3l02dq_ring.c
> +++ b/drivers/staging/iio/accel/lis3l02dq_ring.c
> @@ -409,7 +409,6 @@ int lis3l02dq_configure_buffer(struct iio_dev *indio_dev)
>  	/* Effectively select the buffer implementation */
>  	indio_dev->buffer->access = &lis3l02dq_access_funcs;
>  
> -	buffer->scan_timestamp = true;
>  	indio_dev->setup_ops = &lis3l02dq_buffer_setup_ops;
>  
>  	/* Functions are NULL as we set handler below */
> diff --git a/drivers/staging/iio/adc/ad7298_ring.c b/drivers/staging/iio/adc/ad7298_ring.c
> index d1a12dd..d5539f8 100644
> --- a/drivers/staging/iio/adc/ad7298_ring.c
> +++ b/drivers/staging/iio/adc/ad7298_ring.c
> @@ -148,7 +148,6 @@ int ad7298_register_ring_funcs_and_init(struct iio_dev *indio_dev)
>  
>  	/* Ring buffer functions - here trigger setup related */
>  	indio_dev->setup_ops = &ad7298_ring_setup_ops;
> -	indio_dev->buffer->scan_timestamp = true;
>  
>  	/* Flag that polled ring buffering is possible */
>  	indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
> diff --git a/drivers/staging/iio/adc/ad7476_ring.c b/drivers/staging/iio/adc/ad7476_ring.c
> index 4e298b2..7430b1f 100644
> --- a/drivers/staging/iio/adc/ad7476_ring.c
> +++ b/drivers/staging/iio/adc/ad7476_ring.c
> @@ -115,7 +115,6 @@ int ad7476_register_ring_funcs_and_init(struct iio_dev *indio_dev)
>  
>  	/* Ring buffer functions - here trigger setup related */
>  	indio_dev->setup_ops = &ad7476_ring_setup_ops;
> -	indio_dev->buffer->scan_timestamp = true;
>  
>  	/* Flag that polled ring buffering is possible */
>  	indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
> diff --git a/drivers/staging/iio/adc/ad7606_ring.c b/drivers/staging/iio/adc/ad7606_ring.c
> index e8f94a1..3acccae 100644
> --- a/drivers/staging/iio/adc/ad7606_ring.c
> +++ b/drivers/staging/iio/adc/ad7606_ring.c
> @@ -127,7 +127,6 @@ int ad7606_register_ring_funcs_and_init(struct iio_dev *indio_dev)
>  	/* Ring buffer functions - here trigger setup related */
>  
>  	indio_dev->setup_ops = &ad7606_ring_setup_ops;
> -	indio_dev->buffer->scan_timestamp = true ;
>  
>  	INIT_WORK(&st->poll_work, &ad7606_poll_bh_to_ring);
>  
> diff --git a/drivers/staging/iio/adc/ad799x_ring.c b/drivers/staging/iio/adc/ad799x_ring.c
> index 5dded9e..cc8115c 100644
> --- a/drivers/staging/iio/adc/ad799x_ring.c
> +++ b/drivers/staging/iio/adc/ad799x_ring.c
> @@ -157,7 +157,6 @@ int ad799x_register_ring_funcs_and_init(struct iio_dev *indio_dev)
>  
>  	/* Ring buffer functions - here trigger setup related */
>  	indio_dev->setup_ops = &ad799x_buf_setup_ops;
> -	indio_dev->buffer->scan_timestamp = true;
>  
>  	/* Flag that polled ring buffering is possible */
>  	indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
> diff --git a/drivers/staging/iio/gyro/adis16260_ring.c b/drivers/staging/iio/gyro/adis16260_ring.c
> index 699a615..976cf6d 100644
> --- a/drivers/staging/iio/gyro/adis16260_ring.c
> +++ b/drivers/staging/iio/gyro/adis16260_ring.c
> @@ -117,7 +117,6 @@ int adis16260_configure_ring(struct iio_dev *indio_dev)
>  	indio_dev->buffer = ring;
>  	/* Effectively select the ring buffer implementation */
>  	ring->access = &ring_sw_access_funcs;
> -	ring->scan_timestamp = true;
>  	indio_dev->setup_ops = &adis16260_ring_setup_ops;
>  
>  	indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
> diff --git a/drivers/staging/iio/iio_simple_dummy_buffer.c b/drivers/staging/iio/iio_simple_dummy_buffer.c
> index d6a1c0e..4b9f1fe 100644
> --- a/drivers/staging/iio/iio_simple_dummy_buffer.c
> +++ b/drivers/staging/iio/iio_simple_dummy_buffer.c
> @@ -145,9 +145,6 @@ int iio_simple_dummy_configure_buffer(struct iio_dev *indio_dev)
>  	/* Tell the core how to access the buffer */
>  	buffer->access = &kfifo_access_funcs;
>  
> -	/* Enable timestamps by default */
> -	buffer->scan_timestamp = true;
> -
>  	/*
>  	 * Tell the core what device type specific functions should
>  	 * be run on either side of buffer capture enable / disable.
> diff --git a/drivers/staging/iio/imu/adis16400_ring.c b/drivers/staging/iio/imu/adis16400_ring.c
> index ac22de5..2e634cc 100644
> --- a/drivers/staging/iio/imu/adis16400_ring.c
> +++ b/drivers/staging/iio/imu/adis16400_ring.c
> @@ -189,7 +189,6 @@ int adis16400_configure_ring(struct iio_dev *indio_dev)
>  	indio_dev->buffer = ring;
>  	/* Effectively select the ring buffer implementation */
>  	ring->access = &ring_sw_access_funcs;
> -	ring->scan_timestamp = true;
>  	indio_dev->setup_ops = &adis16400_ring_setup_ops;
>  
>  	indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,

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