mmc: allow upper layers to know immediately if card has been removed
Add a function mmc_detect_card_removed() which upper layers can use to
determine immediately if a card has been removed. This function should
be called after an I/O request fails so that all queued I/O requests
can be errored out immediately instead of waiting for the card device
to be removed.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h
index 14664f1..3400924 100644
--- a/drivers/mmc/core/core.h
+++ b/drivers/mmc/core/core.h
@@ -24,6 +24,7 @@
int (*resume)(struct mmc_host *);
int (*power_save)(struct mmc_host *);
int (*power_restore)(struct mmc_host *);
+ int (*alive)(struct mmc_host *);
};
void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
@@ -59,6 +60,8 @@
void mmc_start_host(struct mmc_host *host);
void mmc_stop_host(struct mmc_host *host);
+int _mmc_detect_card_removed(struct mmc_host *host);
+
int mmc_attach_mmc(struct mmc_host *host);
int mmc_attach_sd(struct mmc_host *host);
int mmc_attach_sdio(struct mmc_host *host);