From: Andrew Lunn <andrew@lunn.ch>
To: Daniel Golle <daniel@makrotopia.org>
Cc: Heiner Kallweit <hkallweit1@gmail.com>,
Russell King <linux@armlinux.org.uk>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next] net: phy: realtek: make sure paged read is protected by mutex
Date: Fri, 4 Oct 2024 23:25:29 +0200 [thread overview]
Message-ID: <398aed77-2c9c-4a43-b73a-459b415d439b@lunn.ch> (raw)
In-Reply-To: <792b8c0d1fc194e2b53cb09d45a234bc668e34c6.1728057091.git.daniel@makrotopia.org>
On Fri, Oct 04, 2024 at 04:52:04PM +0100, Daniel Golle wrote:
> As we cannot rely on phy_read_paged function before the PHY is
> identified, the paged read in rtlgen_supports_2_5gbps needs to be open
> coded as it is being called by the match_phy_device function, ie. before
> .read_page and .write_page have been populated.
>
> Make sure it is also protected by the MDIO bus mutex and use
> rtl821x_write_page instead of 3 individually locked MDIO bus operations.
match_phy_device() as far as i know, is only used during bus probe,
when trying to match a driver to a device. What are you trying to lock
against during probe?
Andrew
next prev parent reply other threads:[~2024-10-04 21:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-04 15:52 Daniel Golle
2024-10-04 21:25 ` Andrew Lunn [this message]
2024-10-04 22:02 ` Daniel Golle
2024-10-05 14:20 ` Andrew Lunn
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