From: Florian Fainelli <f.fainelli@gmail.com>
Date: Wed, 21 Jan 2015 00:41:59 +0000 (-0800)
Subject: net: phy: fixed: allow setting no update_link callback
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~134^2~148^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=799d44442c4821dec65fc59baa4ddc6783a25c54;p=pandora-kernel.git

net: phy: fixed: allow setting no update_link callback

fixed_phy_set_link_update() contains an early check against a NULL
callback pointer, which basically prevents us from removing any
previous callback we may have set. The users of the fp->link_update
callback deal with a NULL callback just fine, so we really want to allow
"removing" a link_update callback to avoid dangling callback pointers
during e.g: module removal.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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