A locked card will return an error for all reads/writes to the
block device, so prevent the block layer from coming up until
the card is unlocked.
Signed-off-by: Al Cooper <alcoop...@gmail.com>
---
drivers/mmc/card/block.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 7b5424f..a4b909d 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -2377,6 +2377,16 @@ static int mmc_blk_probe(struct mmc_card *card)
struct mmc_blk_data *md, *part_md;
char cap_str[10];
+
+ /* if the card is locked, don't bring up the block layer because
+ * all reads and writes will fail.
+ */
+ if (mmc_card_locked(card)) {
+ pr_debug("%s: %s - Probe aborted because card is locked\n",
+ mmc_hostname(card->host), __func__);
+ return -ENODEV;
+ }
+
/*
* Check that the card supports the command class(es) we need.
*/
--
1.8.1.3
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
