netdev - Re: [PATCH] phy: remove irq param to fix crash in fixed_phy

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Date:	Tue, 17 May 2016 14:20:34 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	rabin.vincent@...s.com
Cc:	andrew@...n.ch, f.fainelli@...il.com, netdev@...r.kernel.org,
	linux-m68k@...ts.linux-m68k.org, linux-mips@...ux-mips.org,
	devicetree@...r.kernel.org, rabinv@...s.com
Subject: Re: [PATCH] phy: remove irq param to fix crash in fixed_phy_add()

From: Rabin Vincent <rabin.vincent@...s.com>
Date: Mon, 16 May 2016 13:15:56 +0200

> From: Rabin Vincent <rabinv@...s.com>
> 
> Since e7f4dc3536a ("mdio: Move allocation of interrupts into core"),
> platforms which call fixed_phy_add() before fixed_mdio_bus_init() is
> called (for example, because the platform code and the fixed_phy driver
> use the same initcall level) crash in fixed_phy_add() since the
> ->mii_bus is not allocated.
> 
> Also since e7f4dc3536a, these interrupts are initalized to polling by
> default.  All callers of both fixed_phy_register() and fixed_phy_add()
> pass PHY_POLL for the irq argument, so we can fix these crashes by
> simply removing the irq parameter, since the default is correct for all
> users.
> 
> Fixes: e7f4dc3536a400 ("mdio: Move allocation of interrupts into core")
> Signed-off-by: Rabin Vincent <rabinv@...s.com>

Applied.