On Thu, Sep 19, 2019 at 10:52:35AM +0000, Jerome Pouiller wrote:
> +static int wfx_sdio_copy_from_io(void *priv, unsigned int reg_id,
> + void *dst, size_t count)
> +{
> + struct wfx_sdio_priv *bus = priv;
> + unsigned int sdio_addr = reg_id << 2;
> + int ret;
> +
> + BUG_ON(reg_id > 7);
Hi Jerome
BUG_ON should only be used when the system is corrupted, and there is
no alternative than to stop the machine, so it does not further
corrupt itself. Accessing a register which does not exist is not a
reason the kill the machine. A WARN() and a return of -EINVAL would be
better.
Andrew
