A card can be "slowly" removed which means that when a
card detect irq has triggered a scheduled detect work to
handle the card removal, the card will still be present
in the card slot and thus not removed by the rescan sequence.
To prevent further I/O request for these lingering "removed"
cards, use MMC_CAP2_DETECT_ON_ERR which will check if card is
still present from mmc_detect_card_removed function.
Signed-off-by: Ulf Hansson <ulf.hans...@stericsson.com>
---
drivers/mmc/core/core.c | 3 ++-
include/linux/mmc/host.h | 1 +
2 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 265dfd8..e5d1c3b 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2084,7 +2084,8 @@ int mmc_detect_card_removed(struct mmc_host *host)
* The card will be considered unchanged unless we have been asked to
* detect a change or host requires polling to provide card detection.
*/
- if (card && !host->detect_change && !(host->caps & MMC_CAP_NEEDS_POLL))
+ if (card && !host->detect_change && !(host->caps & MMC_CAP_NEEDS_POLL)
+ && !(host->caps2 & MMC_CAP2_DETECT_ON_ERR))
return mmc_card_removed(card);
ret = mmc_card_removed(card);
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index dd13e05..368a2b9 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -257,6 +257,7 @@ struct mmc_host {
#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 << 7) /* On I/O err check card
removal */
mmc_pm_flag_t pm_caps; /* supported pm features */
unsigned int power_notify_type;
--
1.7.5.4
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