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Message-ID: <20180203180303.8490-52-alexander.levin@microsoft.com>
Date: Sat, 3 Feb 2018 18:04:01 +0000
From: Sasha Levin <Alexander.Levin@...rosoft.com>
To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"stable@...r.kernel.org" <stable@...r.kernel.org>
CC: Yangbo Lu <yangbo.lu@....com>,
"David S . Miller" <davem@...emloft.net>,
Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL for 4.9 52/52] net: gianfar_ptp: move set_fipers() to
spinlock protecting area
From: Yangbo Lu <yangbo.lu@....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@....com>
Acked-by: Richard Cochran <richardcochran@...il.com>
Reviewed-by: Fabio Estevam <fabio.estevam@....com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.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/ethernet/freescale/gianfar_ptp.c
index 57798814160d..ec4b6997f24a 100644
--- a/drivers/net/ethernet/freescale/gianfar_ptp.c
+++ b/drivers/net/ethernet/freescale/gianfar_ptp.c
@@ -314,11 +314,10 @@ static int ptp_gianfar_adjtime(struct ptp_clock_info *ptp, s64 delta)
now = tmr_cnt_read(etsects);
now += delta;
tmr_cnt_write(etsects, now);
+ set_fipers(etsects);
spin_unlock_irqrestore(&etsects->lock, flags);
- set_fipers(etsects);
-
return 0;
}
--
2.11.0
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