mmc: core: Detect card removal on I/O error
To prevent I/O as soon as possible at card removal, a new
detect work is re-scheduled without a delay to let a rescan
remove the card device as soon a possible.
Additionally, MMC_CAP2_DETECT_ON_ERR can now be used to handle
"slowly" removed cards that a scheduled detect work did not
detect as removed. To prevent further I/O requests for these
lingering removed cards, check if card has been removed and then
schedule a detect work to properly remove it.
Change-Id: Iec07260ad51fbe66dc5c54393579b65137d08ad1
Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
[subhashj@codeaurora.org: Fixed merge conflicts]
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index e19225e..a2ee306 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -249,6 +249,7 @@
#define MMC_CAP2_HS200_1_2V_SDR (1 << 6) /* can support */
#define MMC_CAP2_HS200 (MMC_CAP2_HS200_1_8V_SDR | \
MMC_CAP2_HS200_1_2V_SDR)
+#define MMC_CAP2_DETECT_ON_ERR (1 << 8) /* On I/O err check card removal */
mmc_pm_flag_t pm_caps; /* supported pm features */
unsigned int power_notify_type;
#define MMC_HOST_PW_NOTIFY_NONE 0