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SubjectRe: [PATCH] mmc: tegra: suppress errors when probe is deferred
On 17 August 2017 at 13:52, Timo Alho <talho@nvidia.com> wrote:
> Don't print error message when clk_get() returns -EPROBE_DEFER. On
> recent Tegra chips (t186 onwards), the clocks are provided by
> auxiliary microprocessor (bpmp) and until the driver for it is probed
> clocks are not available.
>
> While at it, change the real error message more meaningful.
>
> Signed-off-by: Timo Alho <talho@nvidia.com>
> ---
> drivers/mmc/host/sdhci-tegra.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
> index f668a6f..cdde9ff 100644
> --- a/drivers/mmc/host/sdhci-tegra.c
> +++ b/drivers/mmc/host/sdhci-tegra.c
> @@ -501,8 +501,10 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
>
> clk = devm_clk_get(mmc_dev(host->mmc), NULL);
> if (IS_ERR(clk)) {
> - dev_err(mmc_dev(host->mmc), "clk err\n");
> rc = PTR_ERR(clk);
> + if (rc != -EPROBE_DEFER)
> + dev_err(&pdev->dev,
> + "failed to get controller clock: %d\n", rc);

There is no need to print an error in any case, as the common clk
framework deals with relevant error printing.

> goto err_clk_get;
> }
> clk_prepare_enable(clk);
> --
> 2.7.4
>

Kind regards
Uffe

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