1 files changed, 13 insertions, 10 deletions

diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 0b0577990ddc..0475d96047c4 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -75,7 +75,8 @@ static void mmc_host_classdev_release(struct device *dev)
 {
 	struct mmc_host *host = cls_dev_to_mmc_host(dev);
 	wakeup_source_unregister(host->ws);
-	ida_simple_remove(&mmc_host_ida, host->index);
+	if (of_alias_get_id(host->parent->of_node, "mmc") < 0)
+		ida_simple_remove(&mmc_host_ida, host->index);
 	kfree(host);
 }
 
@@ -388,6 +389,9 @@ int mmc_of_parse(struct mmc_host *host)
 		host->caps2 |= MMC_CAP2_NO_SD;
 	if (device_property_read_bool(dev, "no-mmc"))
 		host->caps2 |= MMC_CAP2_NO_MMC;
+	if (device_property_read_bool(dev, "no-mmc-hs400"))
+		host->caps2 &= ~(MMC_CAP2_HS400_1_8V | MMC_CAP2_HS400_1_2V |
+				 MMC_CAP2_HS400_ES);
 
 	/* Must be after "non-removable" check */
 	if (device_property_read_u32(dev, "fixed-emmc-driver-type", &drv_type) == 0) {
@@ -499,7 +503,7 @@ static int mmc_first_nonreserved_index(void)
  */
 struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
 {
-	int err;
+	int index;
 	struct mmc_host *host;
 	int alias_id, min_idx, max_idx;
 
@@ -512,20 +516,19 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
 
 	alias_id = of_alias_get_id(dev->of_node, "mmc");
 	if (alias_id >= 0) {
-		min_idx = alias_id;
-		max_idx = alias_id + 1;
+		index = alias_id;
 	} else {
 		min_idx = mmc_first_nonreserved_index();
 		max_idx = 0;
-	}
 
-	err = ida_simple_get(&mmc_host_ida, min_idx, max_idx, GFP_KERNEL);
-	if (err < 0) {
-		kfree(host);
-		return NULL;
+		index = ida_simple_get(&mmc_host_ida, min_idx, max_idx, GFP_KERNEL);
+		if (index < 0) {
+			kfree(host);
+			return NULL;
+		}
 	}
 
-	host->index = err;
+	host->index = index;
 
 	dev_set_name(&host->class_dev, "mmc%d", host->index);
 	host->ws = wakeup_source_register(NULL, dev_name(&host->class_dev));