From: Yangbo Lu <yangbo.lu@nxp.com>
Date: Tue, 9 Jan 2018 03:02:33 +0000 (+0800)
Subject: net: gianfar_ptp: move set_fipers() to spinlock protecting area
X-Git-Tag: v4.15-rc8~23^2~9
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=11d827a993a969c3c6ec56758ff63a44ba19b466;p=linux.git

net: gianfar_ptp: move set_fipers() to spinlock protecting area

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>
---

diff --git a/drivers/net/ethernet/freescale/gianfar_ptp.c b/drivers/net/ethernet/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 = 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;
 }