usb: gadget: file_storage: remove its last pieces

This patch removes the last pieces of the file_storage gadget hidden in
storage_common behind __maybe_unused bars.
The CBI bits have no user on the gadget side. Only file_storage
implemented the obsolete protocol.
The additional USB3.0 descriptors were served by file_storage, the other
gadgets are using composite for this.

Acked-by: Michal Nazarewicz <mpn@google.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/gadget/storage_common.c b/drivers/usb/gadget/storage_common.c
index 0e3ae43..4ecbf84 100644 (file)
--- a/drivers/usb/gadget/storage_common.c
+++ b/drivers/usb/gadget/storage_common.c
@@ -93,18 +93,6 @@
 
 /*-------------------------------------------------------------------------*/
 
-/* CBI Interrupt data structure */
-struct interrupt_data {
-       u8      bType;
-       u8      bValue;
-};
-
-#define CBI_INTERRUPT_DATA_LEN         2
-
-/* CBI Accept Device-Specific Command request */
-#define USB_CBI_ADSC_REQUEST           0x00
-
-
 /* Length of a SCSI Command Data Block */
 #define MAX_COMMAND_SIZE       16
 
@@ -385,41 +373,6 @@ static struct usb_ss_ep_comp_descriptor fsg_ss_bulk_out_comp_desc = {
        /*.bMaxBurst =          DYNAMIC, */
 };
 
-static __maybe_unused struct usb_ext_cap_descriptor fsg_ext_cap_desc = {
-       .bLength =              USB_DT_USB_EXT_CAP_SIZE,
-       .bDescriptorType =      USB_DT_DEVICE_CAPABILITY,
-       .bDevCapabilityType =   USB_CAP_TYPE_EXT,
-
-       .bmAttributes =         cpu_to_le32(USB_LPM_SUPPORT),
-};
-
-static __maybe_unused struct usb_ss_cap_descriptor fsg_ss_cap_desc = {
-       .bLength =              USB_DT_USB_SS_CAP_SIZE,
-       .bDescriptorType =      USB_DT_DEVICE_CAPABILITY,
-       .bDevCapabilityType =   USB_SS_CAP_TYPE,
-
-       /* .bmAttributes = LTM is not supported yet */
-
-       .wSpeedSupported =      cpu_to_le16(USB_LOW_SPEED_OPERATION
-               | USB_FULL_SPEED_OPERATION
-               | USB_HIGH_SPEED_OPERATION
-               | USB_5GBPS_OPERATION),
-       .bFunctionalitySupport = USB_LOW_SPEED_OPERATION,
-       .bU1devExitLat =        USB_DEFAULT_U1_DEV_EXIT_LAT,
-       .bU2DevExitLat =        cpu_to_le16(USB_DEFAULT_U2_DEV_EXIT_LAT),
-};
-
-static __maybe_unused struct usb_bos_descriptor fsg_bos_desc = {
-       .bLength =              USB_DT_BOS_SIZE,
-       .bDescriptorType =      USB_DT_BOS,
-
-       .wTotalLength =         cpu_to_le16(USB_DT_BOS_SIZE
-                               + USB_DT_USB_EXT_CAP_SIZE
-                               + USB_DT_USB_SS_CAP_SIZE),
-
-       .bNumDeviceCaps =       2,
-};
-
 static struct usb_descriptor_header *fsg_ss_function[] = {
        (struct usb_descriptor_header *) &fsg_intf_desc,
        (struct usb_descriptor_header *) &fsg_ss_bulk_in_desc,
@@ -429,20 +382,6 @@ static struct usb_descriptor_header *fsg_ss_function[] = {
        NULL,
 };
 
-/* Maxpacket and other transfer characteristics vary by speed. */
-static __maybe_unused struct usb_endpoint_descriptor *
-fsg_ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs,
-               struct usb_endpoint_descriptor *hs,
-               struct usb_endpoint_descriptor *ss)
-{
-       if (gadget_is_superspeed(g) && g->speed == USB_SPEED_SUPER)
-               return ss;
-       else if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
-               return hs;
-       return fs;
-}
-
-
 /* Static strings, in UTF-8 (for simplicity we use only ASCII characters) */
 static struct usb_string               fsg_strings[] = {
        {FSG_STRING_INTERFACE,          fsg_string_interface},