scd: Clean up unused shutdown method.

* scd/apdu.c (shutdown_ccid_reader, apdu_shutdown_reader): Remove.
(reset_ccid_reader): Don't set shutdown_reader.
* scd/ccid-driver.c (ccid_shutdown_reader): Remove.

--
Backport of master commit: d1ae7103352fbda2a05f098379cd3043a0ab5566

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>

scd/apdu.c

@@ -98,7 +98,6 @@ struct reader_table_s {
   int (*connect_card)(int);
   int (*disconnect_card)(int);
   int (*close_reader)(int);
-  int (*shutdown_reader)(int);
   int (*reset_reader)(int);
   int (*get_status_reader)(int, unsigned int *);
   int (*send_apdu_reader)(int,unsigned char *,size_t,
@@ -432,7 +431,6 @@ new_reader_slot (void)
   reader_table[reader].connect_card = NULL;
   reader_table[reader].disconnect_card = NULL;
   reader_table[reader].close_reader = NULL;
-  reader_table[reader].shutdown_reader = NULL;
   reader_table[reader].reset_reader = NULL;
   reader_table[reader].get_status_reader = NULL;
   reader_table[reader].send_apdu_reader = NULL;
@@ -2436,14 +2434,6 @@ close_ccid_reader (int slot)
 }
 
 
-static int
-shutdown_ccid_reader (int slot)
-{
-  ccid_shutdown_reader (reader_table[slot].ccid.handle);
-  return 0;
-}
-
-
 static int
 reset_ccid_reader (int slot)
 {
@@ -2609,7 +2599,6 @@ open_ccid_reader (const char *portstr)
     }
 
   reader_table[slot].close_reader = close_ccid_reader;
-  reader_table[slot].shutdown_reader = shutdown_ccid_reader;
   reader_table[slot].reset_reader = reset_ccid_reader;
   reader_table[slot].get_status_reader = get_status_ccid;
   reader_table[slot].send_apdu_reader = send_apdu_ccid;
@@ -3178,24 +3167,6 @@ apdu_prepare_exit (void)
 }
 
 
-/* Shutdown a reader; that is basically the same as a close but keeps
-   the handle ready for later use. A apdu_reset_reader or apdu_connect
-   should be used to get it active again. */
-int
-apdu_shutdown_reader (int slot)
-{
-  int sw;
-
-  if (slot < 0 || slot >= MAX_READER || !reader_table[slot].used )
-    return SW_HOST_NO_DRIVER;
-  sw = apdu_disconnect (slot);
-  if (sw)
-    return sw;
-  if (reader_table[slot].shutdown_reader)
-    return reader_table[slot].shutdown_reader (slot);
-  return SW_HOST_NOT_SUPPORTED;
-}
-
 /* Enumerate all readers and return information on whether this reader
    is in use.  The caller should start with SLOT set to 0 and
    increment it with each call until an error is returned. */

scd/apdu.h

@@ -92,7 +92,6 @@ int apdu_open_remote_reader (const char *portstr,
                              void *writefnc_value,
                              void (*closefnc) (void *opaque),
                              void *closefnc_value);
-int apdu_shutdown_reader (int slot);
 int apdu_close_reader (int slot);
 void apdu_prepare_exit (void);
 int apdu_enum_reader (int slot, int *used);

scd/ccid-driver.c

@@ -1744,79 +1744,6 @@ do_close_reader (ccid_driver_t handle)
 }
 
 
-/* Reset a reader on HANDLE.  This is useful in case a reader has been
-   plugged of and inserted at a different port.  By resetting the
-   handle, the same reader will be get used.  Note, that on error the
-   handle won't get released.
-
-   This does not return an ATR, so ccid_get_atr should be called right
-   after this one.
-*/
-int
-ccid_shutdown_reader (ccid_driver_t handle)
-{
-  int rc = 0;
-  struct usb_device *dev = NULL;
-  usb_dev_handle *idev = NULL;
-  unsigned char *ifcdesc_extra = NULL;
-  size_t ifcdesc_extra_len;
-  int ifc_no, ep_bulk_out, ep_bulk_in, ep_intr;
-
-  if (!handle || !handle->rid)
-    return CCID_DRIVER_ERR_INV_VALUE;
-
-  do_close_reader (handle);
-
-  if (scan_or_find_devices (-1, handle->rid, NULL, &dev,
-                            &ifcdesc_extra, &ifcdesc_extra_len,
-                            &ifc_no, &ep_bulk_out, &ep_bulk_in, &ep_intr,
-                            &idev, NULL) || !idev)
-    {
-      DEBUGOUT_1 ("no CCID reader with ID %s\n", handle->rid);
-      return CCID_DRIVER_ERR_NO_READER;
-    }
-
-  if (idev)
-    {
-      handle->idev = idev;
-      handle->ifc_no = ifc_no;
-      handle->ep_bulk_out = ep_bulk_out;
-      handle->ep_bulk_in = ep_bulk_in;
-      handle->ep_intr = ep_intr;
-
-      if (parse_ccid_descriptor (handle, ifcdesc_extra, ifcdesc_extra_len))
-        {
-          DEBUGOUT ("device not supported\n");
-          rc = CCID_DRIVER_ERR_NO_READER;
-          goto leave;
-        }
-
-      rc = usb_claim_interface (idev, ifc_no);
-      if (rc)
-        {
-          DEBUGOUT_1 ("usb_claim_interface failed: %d\n", rc);
-          rc = CCID_DRIVER_ERR_CARD_IO_ERROR;
-          goto leave;
-        }
-    }
-
- leave:
-  free (ifcdesc_extra);
-  if (rc)
-    {
-      if (handle->idev)
-        usb_close (handle->idev);
-      handle->idev = NULL;
-      if (handle->dev_fd != -1)
-        close (handle->dev_fd);
-      handle->dev_fd = -1;
-    }
-
-  return rc;
-
-}
-
-
 int
 ccid_set_progress_cb (ccid_driver_t handle,
                       void (*cb)(void *, const char *, int, int, int),