Received-SPF: pass (google.com: domain of linux-kernel+bounces-188901-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3;
Date: Fri, 24 May 2024 17:55:15 +0200
From: Andrew Lunn <andrew@lunn.ch>
To: Horatiu Vultur <horatiu.vultur@microchip.com>
Cc: hkallweit1@gmail.com, linux@armlinux.org.uk, davem@davemloft.net,
	edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
	sumang@marvell.com, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH net v2] net: micrel: Fix lan8841_config_intr after
 getting out of sleep mode
Message-ID: <ed816a87-f4f2-4eff-b4c1-1175251d9eb1@lunn.ch>
References: <20240524085350.359812-1-horatiu.vultur@microchip.com>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20240524085350.359812-1-horatiu.vultur@microchip.com>

On Fri, May 24, 2024 at 10:53:50AM +0200, Horatiu Vultur wrote:
> When the interrupt is enabled, the function lan8841_config_intr tries to
> clear any pending interrupts by reading the interrupt status, then
> checks the return value for errors and then continue to enable the
> interrupt. It has been seen that once the system gets out of sleep mode,
> the interrupt status has the value 0x400 meaning that the PHY detected
> that the link was in low power. That is correct value but the problem is
> that the check is wrong.  We try to check for errors but we return an
> error also in this case which is not an error. Therefore fix this by
> returning only when there is an error.
> 
> Fixes: a8f1a19d27ef ("net: micrel: Add support for lan8841 PHY")
> Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew