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-rw-r--r--drivers/mmc/core/sd.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 41bfb5dfe6f..918477c490b 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -427,6 +427,21 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
mmc_set_bus_width(host, MMC_BUS_WIDTH_4);
}
+ /*
+ * Check if read-only switch is active.
+ */
+ if (!oldcard) {
+ if (!host->ops->get_ro) {
+ printk(KERN_WARNING "%s: host does not "
+ "support reading read-only "
+ "switch. assuming write-enable.\n",
+ mmc_hostname(host));
+ } else {
+ if (host->ops->get_ro(host))
+ mmc_card_set_readonly(card);
+ }
+ }
+
if (!oldcard)
host->card = card;