mmc: Add "ignore mmc pm notify" functionality
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 91c84c7..80f0176 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -381,7 +381,8 @@
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 @@
*/
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 4a13920..6e2d6a1 100644
--- a/include/linux/mmc/pm.h
+++ b/include/linux/mmc/pm.h
@@ -26,5 +26,6 @@
#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 */