netdev - Re: [PATCH][v3] net: phy: fix a bug in get_phy_c45

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Date:	Mon, 02 Nov 2015 23:45:57 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	shh.xie@...il.com
Cc:	netdev@...r.kernel.org, f.fainelli@...il.com,
	Shaohui.Xie@...escale.com
Subject: Re: [PATCH][v3] net: phy: fix a bug in get_phy_c45_ids

From: <shh.xie@...il.com>
Date: Tue, 3 Nov 2015 12:27:33 +0800

> From: Shaohui Xie <Shaohui.Xie@...escale.com>
> 
> When probing devices-in-package for a c45 phy, device zero is the last
> device to probe, however, if driver reads 0 from device zero,
> c45_ids->devices_in_package is set to '0', the loop condition of probing
> will be matched again, see codes below:
> 
> for (i = 1;i < num_ids && c45_ids->devices_in_package == 0;i++)
> 
> driver will run in a dead loop.
> 
> This patch restructures the bug and confusing loop, it provides a helper
> function get_phy_c45_devs_in_pkg which to read devices-in-package registers
> of a MMD, and rewrites the loop with using the helper function.
> 
> Signed-off-by: Shaohui Xie <Shaohui.Xie@...escale.com>

Applied.
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