4.4-stable review patch. If anyone has any objections, please let me know.
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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 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; }