From ed4a26b0995baf10807ebb3f18fba3db2c6539fc Mon Sep 17 00:00:00 2001
From: Alexander Aring <alex.aring@gmail.com>
Date: Thu, 27 Aug 2015 21:49:18 +0200
Subject: at86rf230: interrupt tx with force trx_off

To abort a TX_ARET_BUSY state it's recommended to switch into TRX_OFF
state by doing STATE_TRX_FORCE_OFF. This patch will do always a TRX_OFF
state change when the transceiver stucks in any state. From TRX_OFF we
can switch to the states which are also possible by TX_ON state.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index 39485d0..1e71a97 100644
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -377,14 +377,6 @@ at86rf230_async_read_reg(struct at86rf230_local *lp, const u8 reg,
 	}
 }
 
-static inline u8 at86rf230_state_to_force(u8 state)
-{
-	if (state == STATE_TX_ON)
-		return STATE_FORCE_TX_ON;
-	else
-		return STATE_FORCE_TRX_OFF;
-}
-
 static void
 at86rf230_async_state_assert(void *context)
 {
@@ -426,7 +418,7 @@ at86rf230_async_state_assert(void *context)
 				u8 state = ctx->to_state;
 
 				if (lp->tx_retry >= AT86RF2XX_MAX_TX_RETRIES)
-					state = at86rf230_state_to_force(state);
+					state = STATE_FORCE_TRX_OFF;
 				lp->tx_retry++;
 
 				at86rf230_async_state_change(lp, ctx, state,
-- 
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