On 11/24/2016 08:04 PM, Jaehoon Chung wrote:
> When card is polling (broken-cd), there is a spamming messge related to
> clock.
> After applied this patch, display the message only one time at boot
> time. It's enough to check which clock values is used.
> Also prevent to display the spamming message.
>
> Signed-off-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx>
Applied on my dwmmc repository.
Best Regards,
Jaehoon Chung
> ---
> drivers/mmc/host/dw_mmc.c | 13 ++++++++++++-
> drivers/mmc/host/dw_mmc.h | 1 +
> 2 files changed, 13 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
> index d508225..dd7e95d 100644
> --- a/drivers/mmc/host/dw_mmc.c
> +++ b/drivers/mmc/host/dw_mmc.c
> @@ -1176,13 +1176,24 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit)
>
> div = (host->bus_hz != clock) ? DIV_ROUND_UP(div, 2) : 0;
>
> - if (clock != slot->__clk_old || force_clkinit)
> + if ((clock != slot->__clk_old &&
> + !test_bit(DW_MMC_CARD_NEEDS_POLL, &slot->flags)) ||
> + force_clkinit) {
> dev_info(&slot->mmc->class_dev,
> "Bus speed (slot %d) = %dHz (slot req %dHz, actual %dHZ div = %d)\n",
> slot->id, host->bus_hz, clock,
> div ? ((host->bus_hz / div) >> 1) :
> host->bus_hz, div);
>
> + /*
> + * If card is polling, display the message only
> + * one time at boot time.
> + */
> + if (slot->mmc->caps & MMC_CAP_NEEDS_POLL &&
> + slot->mmc->f_min == clock)
> + set_bit(DW_MMC_CARD_NEEDS_POLL, &slot->flags);
> + }
> +
> /* disable clock */
> mci_writel(host, CLKENA, 0);
> mci_writel(host, CLKSRC, 0);
> diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
> index 4a6ae750..c594658 100644
> --- a/drivers/mmc/host/dw_mmc.h
> +++ b/drivers/mmc/host/dw_mmc.h
> @@ -272,6 +272,7 @@ struct dw_mci_slot {
> #define DW_MMC_CARD_NEED_INIT 1
> #define DW_MMC_CARD_NO_LOW_PWR 2
> #define DW_MMC_CARD_NO_USE_HOLD 3
> +#define DW_MMC_CARD_NEEDS_POLL 4
> int id;
> int sdio_id;
> };
>
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