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From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>
CC:     Yangbo Lu <yangbo.lu@nxp.com>,
        "David S . Miller" <davem@davemloft.net>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL for 4.14 107/110] net: gianfar_ptp: move set_fipers()
 to spinlock protecting area
Thread-Topic: [PATCH AUTOSEL for 4.14 107/110] net: gianfar_ptp: move
 set_fipers() to spinlock protecting area
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Date:   Sat, 3 Feb 2018 18:01:34 +0000
Message-ID: <20180203180015.29073-107-alexander.levin@microsoft.com>
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From: Yangbo Lu <yangbo.lu@nxp.com>

[ Upstream commit 11d827a993a969c3c6ec56758ff63a44ba19b466 ]

set_fipers() calling should be protected by spinlock in
case that any interrupt breaks related registers setting
and the function we expect. This patch is to move set_fipers()
to spinlock protecting area in ptp_gianfar_adjtime().

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/net/ethernet/freescale/gianfar_ptp.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/freescale/gianfar_ptp.c b/drivers/net/eth=
ernet/freescale/gianfar_ptp.c
index 544114281ea7..9f8d4f8e57e3 100644
--- a/drivers/net/ethernet/freescale/gianfar_ptp.c
+++ b/drivers/net/ethernet/freescale/gianfar_ptp.c
@@ -319,11 +319,10 @@ static int ptp_gianfar_adjtime(struct ptp_clock_info =
*ptp, s64 delta)
 	now =3D tmr_cnt_read(etsects);
 	now +=3D delta;
 	tmr_cnt_write(etsects, now);
+	set_fipers(etsects);
=20
 	spin_unlock_irqrestore(&etsects->lock, flags);
=20
-	set_fipers(etsects);
-
 	return 0;
 }
=20
--=20
2.11.0