Staging: heci: fix typos and add wait after disconnect

- Fix typo for enum HECI_WRITE.
 - Fix timeout issue. If the time period is greater or equal 15s, it's timeout.
 - Add 10ms wait time after disconnect, to ensure that hardware is ready.
   Otherwise in the next time connection, hardware resource may be busy.

Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/heci/heci_init.c

@@ -1012,6 +1012,7 @@ int heci_disconnect_host_client(struct iamt_heci_device *dev,
 	if (dev->host_buffer_is_empty) {
 		dev->host_buffer_is_empty = 0;
 		if (heci_disconnect(dev, file_ext)) {
+			mdelay(10); /* Wait for hardware disconnection ready */
 			list_add_tail(&priv_cb->cb_list,
 				&dev->ctrl_rd_list.heci_cb.cb_list);
 		} else {

drivers/staging/heci/heci_main.c

@@ -1088,7 +1088,7 @@ static ssize_t heci_write(struct file *file, const char __user *ubuf,
 	if (file_ext == &dev->iamthif_file_ext) {
 		priv_write_cb = find_pthi_read_list_entry(dev, file);
 		if ((priv_write_cb != NULL) &&
-		     (((currtime - priv_write_cb->read_time) >
+		     (((currtime - priv_write_cb->read_time) >=
 			    IAMTHIF_READ_TIMER) ||
 		      (file_ext->reading_state == HECI_READ_COMPLETE))) {
 			(*offset) = 0;

drivers/staging/heci/interrupt.c

@@ -1054,7 +1054,7 @@ static int heci_bh_write_handler(struct io_heci_list *cmpl_list,
 				list_del(&priv_cb_pos->cb_list);
 				if ((HECI_WRITING == file_ext->writing_state) &&
 					(priv_cb_pos->major_file_operations ==
-						HECI_WRITING) &&
+						HECI_WRITE) &&
 					(file_ext != &dev->iamthif_file_ext)) {
 					DBG("HECI WRITE COMPLETE\n");
 					file_ext->writing_state =