Re: [PATCH v2 4/8] mmc: sdhci-pxav2: change clock name to match DT bindings

[Adrian Hunter <adrian.hunter@intel.com>]

On 2/12/22 05:13, Doug Brown wrote:
> The devicetree bindings for this driver specify that the two allowed
> clock names are io and core. Change this driver to look for io, but
> allow any name if it fails for backwards compatibility. Follow the same
> pattern used in sdhci-pxav3.
> 
> Signed-off-by: Doug Brown <doug@schmorgal.com>
> ---
>  drivers/mmc/host/sdhci-pxav2.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c
> index 0a16098b963f..509ba5dd4a4a 100644
> --- a/drivers/mmc/host/sdhci-pxav2.c
> +++ b/drivers/mmc/host/sdhci-pxav2.c
> @@ -189,7 +189,9 @@ static int sdhci_pxav2_probe(struct platform_device *pdev)
>  
>  	pltfm_host = sdhci_priv(host);
>  
> -	clk = devm_clk_get(dev, "PXA-SDHCLK");
> +	clk = devm_clk_get(dev, "io");
> +	if (IS_ERR(clk))
> +		clk = devm_clk_get(dev, NULL);
>  	if (IS_ERR(clk)) {
>  		dev_err(dev, "failed to get io clock\n");
>  		ret = PTR_ERR(clk);

It is nicer to handle EPROBE_DEFER e.g.

	if (IS_ERR(clk) && PTR_ERR(clk) != -EPROBE_DEFER)
		clk = devm_clk_get(dev, NULL);
	if (IS_ERR(clk)) {
		ret = PTR_ERR(clk);
		dev_err_probe(dev, ret, "failed to get io clock\n");