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SubjectRe: [PATCH] mmc: sdhci-pxav3: don't disable clocks when we might get an interrupt
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On 15/05/18 00:56, Thomas Hebb wrote:
> Currently, runtime_suspend() unconditionally disables the clock gates
> for the controller, which means that it's unable to receive interrupts
> generated by connected SDIO cards.

We currently get / put runtime pm with enable / disable of the SDIO IRQ
(refer sdhci_enable_sdio_irq()) so are you sure this is needed?

>
> Signed-off-by: Thomas Hebb <tommyhebb@gmail.com>
> ---
> drivers/mmc/host/sdhci-pxav3.c | 16 ++++++++++------
> 1 file changed, 10 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
> index a34434166ca7..59760f3cc1d7 100644
> --- a/drivers/mmc/host/sdhci-pxav3.c
> +++ b/drivers/mmc/host/sdhci-pxav3.c
> @@ -562,9 +562,11 @@ static int sdhci_pxav3_runtime_suspend(struct device *dev)
> if (host->tuning_mode != SDHCI_TUNING_MODE_3)
> mmc_retune_needed(host->mmc);
>
> - clk_disable_unprepare(pxa->clk_io);
> - if (!IS_ERR(pxa->clk_core))
> - clk_disable_unprepare(pxa->clk_core);
> + if (!sdhci_sdio_irq_enabled(host)) {
> + clk_disable_unprepare(pxa->clk_io);
> + if (!IS_ERR(pxa->clk_core))
> + clk_disable_unprepare(pxa->clk_core);
> + }
>
> return 0;
> }
> @@ -575,9 +577,11 @@ static int sdhci_pxav3_runtime_resume(struct device *dev)
> struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
>
> - clk_prepare_enable(pxa->clk_io);
> - if (!IS_ERR(pxa->clk_core))
> - clk_prepare_enable(pxa->clk_core);
> + if (!sdhci_sdio_irq_enabled(host)) {
> + clk_prepare_enable(pxa->clk_io);
> + if (!IS_ERR(pxa->clk_core))
> + clk_prepare_enable(pxa->clk_core);
> + }
>
> return sdhci_runtime_resume_host(host);
> }
>

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