On Tue, 24 Apr 2018 16:05:51 +0100
Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx> wrote:
> The regmap core now handles splitting up transactions according to
> max_raw_read, so this code is no longer required in client drivers.
>
> Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>
Applied to the togreg branch of iio.git and pushed out as testing
for the autobuilders to play with it.
Thanks,
Jonathan
> ---
>
> The necessary changes to support this are available in Linus's tree now.
>
> Thanks,
> Charles
>
> drivers/iio/accel/bmc150-accel-core.c | 23 +++--------------------
> 1 file changed, 3 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c
> index 208f2d9f0e8a..383c802eb5b8 100644
> --- a/drivers/iio/accel/bmc150-accel-core.c
> +++ b/drivers/iio/accel/bmc150-accel-core.c
> @@ -837,29 +837,12 @@ static int bmc150_accel_fifo_transfer(struct bmc150_accel_data *data,
> int sample_length = 3 * 2;
> int ret;
> int total_length = samples * sample_length;
> - int i;
> - size_t step = regmap_get_raw_read_max(data->regmap);
> -
> - if (!step || step > total_length)
> - step = total_length;
> - else if (step < total_length)
> - step = sample_length;
> -
> - /*
> - * Seems we have a bus with size limitation so we have to execute
> - * multiple reads
> - */
> - for (i = 0; i < total_length; i += step) {
> - ret = regmap_raw_read(data->regmap, BMC150_ACCEL_REG_FIFO_DATA,
> - &buffer[i], step);
> - if (ret)
> - break;
> - }
>
> + ret = regmap_raw_read(data->regmap, BMC150_ACCEL_REG_FIFO_DATA,
> + buffer, total_length);
> if (ret)
> dev_err(dev,
> - "Error transferring data from fifo in single steps of %zu\n",
> - step);
> + "Error transferring data from fifo: %d\n", ret);
>
> return ret;
> }
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