From 6f39eb87de043ce778f584f4ae1b23c6db415a33 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Stefan=20S=C3=B8rensen?= Date: Fri, 27 Jun 2014 12:05:31 +0200 Subject: [PATCH] dp83640: Verify calibration pin assignment MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This constraints the pin assignment to not allow the calibration function to be reassigned and only allow reassigning the calibratin pin if only one phy is connected. Signed-off-by: Stefan Sørensen Signed-off-by: David S. Miller --- drivers/net/phy/dp83640.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/net/phy/dp83640.c b/drivers/net/phy/dp83640.c index eabecff9b740..ab4811242458 100644 --- a/drivers/net/phy/dp83640.c +++ b/drivers/net/phy/dp83640.c @@ -510,6 +510,16 @@ static int ptp_dp83640_enable(struct ptp_clock_info *ptp, static int ptp_dp83640_verify(struct ptp_clock_info *ptp, unsigned int pin, enum ptp_pin_function func, unsigned int chan) { + struct dp83640_clock *clock = + container_of(ptp, struct dp83640_clock, caps); + + if (clock->caps.pin_config[pin].func == PTP_PF_PHYSYNC && + !list_empty(&clock->phylist)) + return 1; + + if (func == PTP_PF_PHYSYNC) + return 1; + return 0; } -- 2.20.1