On Mon, 11 Oct 2010, Dmitry Shmidt wrote:
> Hi,
>
> While working with "permanent" mmc/sdio devices we may want to skip new
> suspend/resume functionality.
Why ??
>
> commit 4c40080bb1d4f68000b7a4c397c1bc8a623668fa
> Author: Dmitry Shmidt <dimitrysh@xxxxxxxxxxx>
> Date: Mon Oct 11 11:28:54 2010 -0700
>
> mmc: Add "ignore mmc pm notify" functionality
>
> Signed-off-by: Dmitry Shmidt <dimitrysh@xxxxxxxxxxx>
>
> diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
> index d80cfdc..ba684e6 100644
> --- a/drivers/mmc/core/host.c
> +++ b/drivers/mmc/core/host.c
> @@ -137,7 +137,8 @@ int mmc_add_host(struct mmc_host *host)
> #endif
>
> mmc_start_host(host);
> - register_pm_notifier(&host->pm_notify);
> + if (!(host->pm_flags & MMC_PM_IGNORE_PM_NOTIFY))
> + register_pm_notifier(&host->pm_notify);
>
> return 0;
> }
> @@ -154,7 +155,9 @@ EXPORT_SYMBOL(mmc_add_host);
> */
> void mmc_remove_host(struct mmc_host *host)
> {
> - unregister_pm_notifier(&host->pm_notify);
> + if (!(host->pm_flags & MMC_PM_IGNORE_PM_NOTIFY))
> + unregister_pm_notifier(&host->pm_notify);
> +
> mmc_stop_host(host);
>
> #ifdef CONFIG_DEBUG_FS
> diff --git a/include/linux/mmc/pm.h b/include/linux/mmc/pm.h
> index d37aac4..3903823 100644
> --- a/include/linux/mmc/pm.h
> +++ b/include/linux/mmc/pm.h
> @@ -26,5 +26,6 @@ typedef unsigned int mmc_pm_flag_t;
>
> #define MMC_PM_KEEP_POWER (1 << 0) /* preserve card power during
> suspend */
> #define MMC_PM_WAKE_SDIO_IRQ (1 << 1) /* wake up host system on SDIO
> IRQ assertion */
> +#define MMC_PM_IGNORE_PM_NOTIFY (1 << 2) /* ignore mmc pm notify
> */
>
> #endif
>
>
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