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Date: Thu, 14 Dec 2017 15:57:58 -0800 From: Florian Fainelli <f.fainelli@...il.com> To: netdev@...r.kernel.org Cc: rmk+kernel@...linux.org.uk, Florian Fainelli <f.fainelli@...il.com>, Andrew Lunn <andrew@...n.ch>, linux-kernel@...r.kernel.org (open list) Subject: [PATCH net-next] net: phy: phylink: Handle NULL fwnode_handle Unlike the various of_* routines to fetch properties, fwnode_* routines can have an early check against a NULL fwnode_handle reference which makes them return -EINVAL (see fwnode_call_int_op), thus making it virtually impossible to differentiate what type of error is going on. Have an early check in phylink_register_sfp() so we can keep proceeding with the initialization, there is not much we can do without a valid fwnode_handle except return early and treat this similarly to -ENOENT. Fixes: 8fa7b9b6af25 ("phylink: convert to fwnode") Signed-off-by: Florian Fainelli <f.fainelli@...il.com> --- drivers/net/phy/phylink.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index c89b8c63f16a..69adc0aa141c 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -506,6 +506,9 @@ static int phylink_register_sfp(struct phylink *pl, struct fwnode_reference_args ref; int ret; + if (!fwnode) + return 0; + ret = fwnode_property_get_reference_args(fwnode, "sfp", NULL, 0, 0, &ref); if (ret < 0) { -- 2.14.1
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