[patch 1/7] bluetooth: hidp_process_hid_control remove unnecessary parameter dealing

[patch 1/7] bluetooth: hidp_process_hid_control remove unnecessary parameter dealing

[akpm]

From: Dave Young <hidave.darkstar@gmail.com>

According to the bluetooth HID spec v1.0 chapter 7.4.2

"This code requests a major state change in a BT-HID device.  A HID_CONTROL
request does not generate a HANDSHAKE response."

"A HID_CONTROL packet with a parameter of VIRTUAL_CABLE_UNPLUG is the only
HID_CONTROL packet a device can send to a host.  A host will ignore all other
packets."

So in the hidp_precess_hid_control function, we just need to deal with the
UNLUG packet.

Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 net/bluetooth/hidp/core.c |   19 +------------------
 1 file changed, 1 insertion(+), 18 deletions(-)

diff -puN net/bluetooth/hidp/core.c~bluetooth-hidp_process_hid_control-remove-unnecessary-parameter-dealing net/bluetooth/hidp/core.c
--- a/net/bluetooth/hidp/core.c~bluetooth-hidp_process_hid_control-remove-unnecessary-parameter-dealing
+++ a/net/bluetooth/hidp/core.c
@@ -369,30 +369,13 @@ static inline void hidp_process_hid_cont
 {
 	BT_DBG("session %p param 0x%02x", session, param);
 
-	switch (param) {
-	case HIDP_CTRL_NOP:
-		break;
-
-	case HIDP_CTRL_VIRTUAL_CABLE_UNPLUG:
+	if (param == HIDP_CTRL_VIRTUAL_CABLE_UNPLUG) {
 		/* Flush the transmit queues */
 		skb_queue_purge(&session->ctrl_transmit);
 		skb_queue_purge(&session->intr_transmit);
 
 		/* Kill session thread */
 		atomic_inc(&session->terminate);
-		break;
-
-	case HIDP_CTRL_HARD_RESET:
-	case HIDP_CTRL_SOFT_RESET:
-	case HIDP_CTRL_SUSPEND:
-	case HIDP_CTRL_EXIT_SUSPEND:
-		/* FIXME: We have to parse these and return no error */
-		break;
-
-	default:
-		__hidp_send_ctrl_message(session,
-			HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0);
-		break;
 	}
 }
 
_

Re: [patch 1/7] bluetooth: hidp_process_hid_control remove unnecessary parameter dealing

[David Miller]

From: akpm@linux-foundation.org
Date: Mon, 04 Feb 2008 23:48:13 -0800

> From: Dave Young <hidave.darkstar@gmail.com>
> 
> According to the bluetooth HID spec v1.0 chapter 7.4.2
> 
> "This code requests a major state change in a BT-HID device.  A HID_CONTROL
> request does not generate a HANDSHAKE response."
> 
> "A HID_CONTROL packet with a parameter of VIRTUAL_CABLE_UNPLUG is the only
> HID_CONTROL packet a device can send to a host.  A host will ignore all other
> packets."
> 
> So in the hidp_precess_hid_control function, we just need to deal with the
> UNLUG packet.
> 
> Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
> Cc: Marcel Holtmann <marcel@holtmann.org>
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Applied.