On 01/07, Jonathan Santos wrote:
> From: Sergiu Cuciurean <sergiu.cuciurean@xxxxxxxxxx>
>
> This patch adds an additional parameter to the register read function.
> By passing the data pointer to the function, the returned value will used
> only for status check.
> With this change, the status check won't be confused with a register value
> check:
>
> ret = ad7768_spi_reg_read()
> if (ret){}
>
> Also this change removes the probability to interpret a negative value as
> a return code (the ADC is a differential one)."
>
> Signed-off-by: Sergiu Cuciurean <sergiu.cuciurean@xxxxxxxxxx>
> ---
...
> @@ -190,7 +190,9 @@ static int ad7768_spi_reg_read(struct ad7768_state *st, unsigned int addr,
> if (ret < 0)
> return ret;
>
> - return (be32_to_cpu(st->data.d32) >> shift);
> + *data = (be32_to_cpu(st->data.d32) >> shift);
Are the outer parenthesis needed?
*data = be32_to_cpu(st->data.d32) >> shift;
?
> +
> + return ret;
> }
>
