HID: bt: Wait for ACK on Sent Reports

Wait for an ACK from the device before returning from
hidp_output_raw_report(). This way, failures can be returned to the user
application. Also, it prevents ACK/NAK packets from an output packet from
being confused with ACK/NAK packets from an input request packet.

Signed-off-by: Alan Ott <alan@signal11.us>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 4 insertions, 0 deletions

diff --git a/net/bluetooth/hidp/hidp.h b/net/bluetooth/hidp/hidp.h
index 2cc35dc8fa03..92e093e61f27 100644
--- a/net/bluetooth/hidp/hidp.h
+++ b/net/bluetooth/hidp/hidp.h
@@ -80,6 +80,7 @@
 #define HIDP_VIRTUAL_CABLE_UNPLUG       0
 #define HIDP_BOOT_PROTOCOL_MODE         1
 #define HIDP_BLUETOOTH_VENDOR_ID        9
+#define HIDP_WAITING_FOR_SEND_ACK       11
 
 struct hidp_connadd_req {
         int   ctrl_sock;        // Connected control socket
@@ -154,6 +155,9 @@ struct hidp_session {
         struct sk_buff_head ctrl_transmit;
         struct sk_buff_head intr_transmit;
 
+        /* Used in hidp_output_raw_report() */
+        int output_report_success; /* boolean */
+
         /* Report descriptor */
         __u8 *rd_data;
         uint rd_size;