1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 41bfb5dfe6ff..918477c490b0 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;