[PATCH] mci: Improve error message for non-existent vmmc regulator

[Rouven Czerwinski]

On Tue, 2021-09-14 at 11:00 +0200, Uwe Kleine-König wrote:
> There are three improvements: a) Use a already initialized device as first
> parameter to dev_err() and b) indicate that the error will be ignored, and
> c) downgrade to a warning.
> 
> This changes the error message from
> 
> 	ERROR: <NULL>: Failed to get 'vmmc' regulator.
> 
> to
> 
> 	WARNING: bcm2835_mci fe340000.mmc at 7e340000.of: Failed to get 'vmmc' regulator (ignored).
> 
> on a Raspberry Pi 4.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
> ---
>  drivers/mci/mci-core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/mci/mci-core.c b/drivers/mci/mci-core.c
> index 92a73c8f1dfe..82e2f82f5377 100644
> --- a/drivers/mci/mci-core.c
> +++ b/drivers/mci/mci-core.c
> @@ -1920,7 +1920,7 @@ int mci_register(struct mci_host *host)
>  
>  	host->supply = regulator_get(hw_dev, "vmmc");
>  	if (IS_ERR(host->supply)) {
> -		dev_err(&mci->dev, "Failed to get 'vmmc' regulator.\n");
> +		dev_warn(hw_dev, "Failed to get 'vmmc' regulator (ignored).\n");
>  		host->supply = NULL;
>  	}
>  

Reviewed-by: Rouven Czerwinski <r.czerwinski at pengutronix.de>