This is a note to let you know that I've just added the patch titled

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

to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: net-gianfar_ptp-move-set_fipers-to-spinlock-protecting-area.patch and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Wed Feb 28 16:19:30 CET 2018

From: Yangbo Lu yangbo.lu@nxp.com Date: Tue, 9 Jan 2018 11:02:33 +0800 Subject: net: gianfar_ptp: move set_fipers() to spinlock protecting area

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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.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; }

Patches currently in stable-queue which might be from yangbo.lu@nxp.com are

queue-4.4/net-gianfar_ptp-move-set_fipers-to-spinlock-protecting-area.patch