diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 31e8bf3578c891303a9194c6c23df987cf59f38f..65b72e5c46057e6ea120801addd0c5d7bfdf26ec 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -23,6 +23,7 @@
 #include <linux/uio.h>
 #include <asm/unaligned.h>
 
+#include <linux/usb/ccid.h>
 #include <linux/usb/composite.h>
 #include <linux/usb/functionfs.h>
 
@@ -1926,7 +1927,7 @@ typedef int (*ffs_os_desc_callback)(enum ffs_os_desc_type entity,
 
 static int __must_check ffs_do_single_desc(char *data, unsigned len,
 					   ffs_entity_callback entity,
-					   void *priv)
+					   void *priv, int *current_class)
 {
 	struct usb_descriptor_header *_ds = (void *)data;
 	u8 length;
@@ -1984,6 +1985,7 @@ static int __must_check ffs_do_single_desc(char *data, unsigned len,
 		__entity(INTERFACE, ds->bInterfaceNumber);
 		if (ds->iInterface)
 			__entity(STRING, ds->iInterface);
+		*current_class = ds->bInterfaceClass;
 	}
 		break;
 
@@ -1997,11 +1999,22 @@ static int __must_check ffs_do_single_desc(char *data, unsigned len,
 	}
 		break;
 
-	case HID_DT_HID:
-		pr_vdebug("hid descriptor\n");
-		if (length != sizeof(struct hid_descriptor))
-			goto inv_length;
-		break;
+	case USB_TYPE_CLASS | 0x01:
+                if (*current_class == USB_INTERFACE_CLASS_HID) {
+			pr_vdebug("hid descriptor\n");
+			if (length != sizeof(struct hid_descriptor))
+				goto inv_length;
+			break;
+		} else if (*current_class == USB_INTERFACE_CLASS_CCID) {
+			pr_vdebug("ccid descriptor\n");
+			if (length != sizeof(struct ccid_descriptor))
+				goto inv_length;
+			break;
+		} else {
+			pr_vdebug("unknown descriptor: %d for class %d\n",
+			      _ds->bDescriptorType, *current_class);
+			return -EINVAL;
+		}
 
 	case USB_DT_OTG:
 		if (length != sizeof(struct usb_otg_descriptor))
@@ -2058,6 +2071,7 @@ static int __must_check ffs_do_descs(unsigned count, char *data, unsigned len,
 {
 	const unsigned _len = len;
 	unsigned long num = 0;
+	int current_class = -1;
 
 	ENTER();
 
@@ -2078,7 +2092,8 @@ static int __must_check ffs_do_descs(unsigned count, char *data, unsigned len,
 		if (!data)
 			return _len - len;
 
-		ret = ffs_do_single_desc(data, len, entity, priv);
+		ret = ffs_do_single_desc(data, len, entity, priv,
+			&current_class);
 		if (unlikely(ret < 0)) {
 			pr_debug("%s returns %d\n", __func__, ret);
 			return ret;
diff --git a/include/linux/usb/ccid.h b/include/linux/usb/ccid.h
new file mode 100644
index 0000000000000000000000000000000000000000..3431446d686400db205a86617e2f58c90c5b73d4
--- /dev/null
+++ b/include/linux/usb/ccid.h
@@ -0,0 +1,51 @@
+/*
+ *  Copyright (c) 2018  Vincent Pelletier
+ */
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef __CCID_H
+#define __CCID_H
+
+#include <linux/types.h>
+
+#define USB_INTERFACE_CLASS_CCID 0x0b
+
+struct ccid_descriptor {
+	__u8  bLength;
+	__u8  bDescriptorType;
+	__le16 bcdCCID;
+	__u8  bMaxSlotIndex;
+	__u8  bVoltageSupport;
+	__le32 dwProtocols;
+	__le32 dwDefaultClock;
+	__le32 dwMaximumClock;
+	__u8  bNumClockSupported;
+	__le32 dwDataRate;
+	__le32 dwMaxDataRate;
+	__u8  bNumDataRatesSupported;
+	__le32 dwMaxIFSD;
+	__le32 dwSynchProtocols;
+	__le32 dwMechanical;
+	__le32 dwFeatures;
+	__le32 dwMaxCCIDMessageLength;
+	__u8  bClassGetResponse;
+	__u8  bClassEnvelope;
+	__le16 wLcdLayout;
+	__u8  bPINSupport;
+	__u8  bMaxCCIDBusySlots;
+} __attribute__ ((packed));
+
+#endif /* __CCID_H */