Quoting Douglas Anderson (2020-12-10 12:57:25)
> diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
> index 3451eb325513..dd41f6a4dbfb 100644
> --- a/drivers/mmc/host/sdhci-msm.c
> +++ b/drivers/mmc/host/sdhci-msm.c
> @@ -353,6 +353,7 @@ static void msm_set_clock_rate_for_bus_mode(struct sdhci_host *host,
> struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
> struct mmc_ios curr_ios = host->mmc->ios;
> struct clk *core_clk = msm_host->bulk_clks[0].clk;
> + unsigned int achieved_rate;
unsigned long?
> int rc;
>
> clock = msm_get_clock_rate_for_bus_mode(host, clock);
> @@ -363,6 +364,17 @@ static void msm_set_clock_rate_for_bus_mode(struct sdhci_host *host,
> curr_ios.timing);
> return;
> }
> +
> + /*
> + * Qualcomm clock drivers by default round clock _up_ if they can't
> + * make the requested rate. This is not good for SD. Yell if we
> + * encounter it.
> + */
> + achieved_rate = clk_get_rate(core_clk);
> + if (achieved_rate > clock)
> + pr_warn("%s: Card appears overclocked; req %u Hz, actual %d Hz\n",
Can we use dev_warn?
dev_warn(mmc_dev(mmc)
dev_warn(&msm_host->pdev->dev
?
> + mmc_hostname(host->mmc), clock, achieved_rate);
> +
> msm_host->clk_rate = clock;
> pr_debug("%s: Setting clock at rate %lu at timing %d\n",
> mmc_hostname(host->mmc), clk_get_rate(core_clk),
This could use achieved_rate now.
