From: Alexander Aring Date: Tue, 7 Oct 2014 08:38:27 +0000 (+0200) Subject: at86rf230: correct aret lifs and sifs handling X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=850f43acb1869edf2a8b355330819412066d6fa2;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git at86rf230: correct aret lifs and sifs handling This patch adds lifs/sifs handling only if max_frame_retries is above zero. The at86rf2xx datasheets says nothing about phy lifs/sifs handling. I asked the atmel support and they said lifs/sifs is done by phy when max_frame_retries is above zero. Signed-off-by: Alexander Aring Signed-off-by: Marcel Holtmann --- diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c index 44d2f1de31e0..2a25324d3a64 100644 --- a/drivers/net/ieee802154/at86rf230.c +++ b/drivers/net/ieee802154/at86rf230.c @@ -89,6 +89,7 @@ struct at86rf230_local { struct at86rf230_state_change irq; bool tx_aret; + s8 max_frame_retries; bool is_tx; /* spinlock for is_tx protection */ spinlock_t lock; @@ -1001,6 +1002,9 @@ at86rf230_xmit(struct ieee802154_dev *dev, struct sk_buff *skb) return -ETIMEDOUT; } + if (lp->max_frame_retries > 0) + return 0; + /* Interfame spacing time, which is phy depend. * TODO * Move this handling in MAC 802.15.4 layer. @@ -1230,6 +1234,7 @@ at86rf230_set_frame_retries(struct ieee802154_dev *dev, s8 retries) return -EINVAL; lp->tx_aret = retries >= 0; + lp->max_frame_retries = retries; if (retries >= 0) rc = at86rf230_write_subreg(lp, SR_MAX_FRAME_RETRIES, retries);