From: Stefan Wahren <stefan.wahren@i2se.com>
Date: Wed, 18 Jul 2018 06:31:44 +0000 (+0200)
Subject: net: qca_spi: Make sure the QCA7000 reset is triggered
X-Git-Tag: v4.9.124~16
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c8697ad8ec0e7b08a61efee60b4359e533dc038a;p=platform%2Fkernel%2Flinux-amlogic.git

net: qca_spi: Make sure the QCA7000 reset is triggered

[ Upstream commit 711c62dfa6bdb4326ca6c587f295ea5c4f7269de ]

In case the SPI thread is not running, a simple reset of sync
state won't fix the transmit timeout. We also need to wake up the kernel
thread.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Fixes: ed7d42e24eff ("net: qca_spi: fix transmit queue timeout handling")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c
index d8ec819..837134f 100644
--- a/drivers/net/ethernet/qualcomm/qca_spi.c
+++ b/drivers/net/ethernet/qualcomm/qca_spi.c
@@ -739,6 +739,9 @@ qcaspi_netdev_tx_timeout(struct net_device *dev)
 	qca->net_dev->stats.tx_errors++;
 	/* Trigger tx queue flush and QCA7000 reset */
 	qca->sync = QCASPI_SYNC_UNKNOWN;
+
+	if (qca->spi_thread)
+		wake_up_process(qca->spi_thread);
 }
 
 static int