diag: Add support for diag dci restart

The diag implementation of dci does not properly
handle the closing/re-opening of the dci channel.
Add support for closing/re-opening of the dci channel
including appropriate handling of client dci requests while
the channel is closed and resumption upon re-opening of
the channel.

Change-Id: Ied29fe99be5fee34cfe27cc5bdeacd4365fa136b
Signed-off-by: Ravi Aravamudhan <aravamud@codeaurora.org>
diff --git a/drivers/char/diag/diag_dci.h b/drivers/char/diag/diag_dci.h
index 435c750..3f62e5e 100644
--- a/drivers/char/diag/diag_dci.h
+++ b/drivers/char/diag/diag_dci.h
@@ -79,6 +79,7 @@
 int diag_dci_init(void);
 void diag_dci_exit(void);
 void diag_read_smd_dci_work_fn(struct work_struct *);
+void diag_update_smd_dci_work_fn(struct work_struct *);
 int diag_process_dci_transaction(unsigned char *buf, int len);
 int diag_send_dci_pkt(struct diag_master_table entry, unsigned char *buf,
 							 int len, int index);
@@ -87,11 +88,11 @@
 void create_dci_log_mask_tbl(unsigned char *tbl_buf);
 void update_dci_cumulative_log_mask(int offset, int byte_index,
 						uint8_t byte_mask);
-void diag_send_dci_log_mask(smd_channel_t *ch);
+int diag_send_dci_log_mask(smd_channel_t *ch);
 void extract_dci_log(unsigned char *buf);
 /* DCI event streaming functions */
 void update_dci_cumulative_event_mask(int offset, uint8_t byte_mask);
-void diag_send_dci_event_mask(smd_channel_t *ch);
+int diag_send_dci_event_mask(smd_channel_t *ch);
 void extract_dci_events(unsigned char *buf);
 void create_dci_event_mask_tbl(unsigned char *tbl_buf);
 #endif