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SubjectRe: [PATCH] iio: gp2ap020a00f: Use put_unaligned_le32
On 11/02/15 09:17, Vaishali Thakkar wrote:
> This patch introduces the use of function put_unaligned_le32.
>
> This is done using Coccinelle and semantic patch used is as follows:
>
> @@ identifier tmp; expression ptr; expression y,e; type T; @@
>
> - tmp = cpu_to_le32(y);
>
> <+... when != tmp
> - memcpy(ptr, (T)&tmp, ...);
> + put_unaligned_le32(y,ptr);
> ...+>
> ? tmp = e
>
> @@ type T; identifier tmp; @@
>
> - T tmp;
> ...when != tmp
>
> Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Applied to togreg branch of iio.git. Will be initially pushed out as
testing for the autobuilders to play with it.

Thanks,
> ---
> drivers/iio/light/gp2ap020a00f.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/iio/light/gp2ap020a00f.c b/drivers/iio/light/gp2ap020a00f.c
> index 221ed16..650c05f 100644
> --- a/drivers/iio/light/gp2ap020a00f.c
> +++ b/drivers/iio/light/gp2ap020a00f.c
> @@ -966,7 +966,6 @@ static irqreturn_t gp2ap020a00f_trigger_handler(int irq, void *data)
> struct iio_dev *indio_dev = pf->indio_dev;
> struct gp2ap020a00f_data *priv = iio_priv(indio_dev);
> size_t d_size = 0;
> - __le32 light_lux;
> int i, out_val, ret;
>
> for_each_set_bit(i, indio_dev->active_scan_mask,
> @@ -981,8 +980,8 @@ static irqreturn_t gp2ap020a00f_trigger_handler(int irq, void *data)
> i == GP2AP020A00F_SCAN_MODE_LIGHT_IR) {
> out_val = le16_to_cpup((__le16 *)&priv->buffer[d_size]);
> gp2ap020a00f_output_to_lux(priv, &out_val);
> - light_lux = cpu_to_le32(out_val);
> - memcpy(&priv->buffer[d_size], (u8 *)&light_lux, 4);
> +
> + put_unaligned_le32(out_val, &priv->buffer[d_size]);
> d_size += 4;
> } else {
> d_size += 2;
>



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