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mmc: Add "ignore mmc pm notify" functionality

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Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
This commit is contained in:
Dmitry Shmidt 2010-10-07 14:39:16 -07:00 committed by Colin Cross
parent fe6271ebd8
commit 73ae60c90e
2 changed files with 6 additions and 2 deletions
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7
drivers/mmc/core/host.c
View file

@ -381,7 +381,8 @@ int mmc_add_host(struct mmc_host *host)
mmc_host_clk_sysfs_init(host);
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;
}
@ -398,7 +399,9 @@ 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

1
include/linux/mmc/pm.h
View file

@ -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 /* LINUX_MMC_PM_H */