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Message-Id: <20180302084438.152077394@linuxfoundation.org>
Date: Fri, 2 Mar 2018 09:51:29 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Yangbo Lu <yangbo.lu@....com>,
Richard Cochran <richardcochran@...il.com>,
Fabio Estevam <fabio.estevam@....com>,
"David S. Miller" <davem@...emloft.net>,
Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.4 33/34] net: gianfar_ptp: move set_fipers() to spinlock protecting area
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/net/ethernet/freescale/gianfar_ptp.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- 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 pt
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;
}
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