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[2003:ea:8bcf:e300:55f4:efb4:8b34:37bb]) by smtp.googlemail.com with ESMTPSA id h67-v6sm8855069wma.10.2018.11.22.11.53.23 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 22 Nov 2018 11:53:23 -0800 (PST) Subject: Re: Issue with RTL8111 NIC after upgrade to kernel 4.19 To: Marc Dionne Cc: andrew@lunn.ch, norbert.jurkeit@web.de, nic_swsd@realtek.com, Florian Fainelli , David Miller , netdev , Linux Kernel Mailing List , michael.wiktowy@gmail.com, jcline@redhat.com References: <38dad61b-bc7f-7038-6d1b-f5c4afe3841c@gmail.com> <20181121202034.GA10697@lunn.ch> <6aeba3d6-2292-1221-9be7-1c0bb7cbc203@gmail.com> <7d6362e1-e197-d338-d6b0-9036c3802e2c@gmail.com> From: Heiner Kallweit Message-ID: Date: Thu, 22 Nov 2018 20:53:16 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.3.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 22.11.2018 20:29, Marc Dionne wrote: > On Thu, Nov 22, 2018 at 2:17 PM Heiner Kallweit wrote: >> Thanks a lot for testing. Could you please test also the following >> as an alternative to the delay? >> >> diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c >> index 55202a0ac..aeccb2323 100644 >> --- a/drivers/net/phy/phy_device.c >> +++ b/drivers/net/phy/phy_device.c >> @@ -2254,6 +2254,7 @@ int phy_driver_register(struct phy_driver *new_driver, struct module *owner) >> new_driver->mdiodrv.driver.probe = phy_probe; >> new_driver->mdiodrv.driver.remove = phy_remove; >> new_driver->mdiodrv.driver.owner = owner; >> + new_driver->mdiodrv.driver.probe_type = PROBE_FORCE_SYNCHRONOUS; >> >> retval = driver_register(&new_driver->mdiodrv.driver); >> if (retval) { > > That also gets me network reliably, switching between a kernel where > it fails (distro 4.19 kernel) and the custom kernel with the patch. > Thanks again for the very quick response. The result is good and bad news at once: good because it seems we have a fix, bad because we don't understand the root cause of the issue yet. >>> There's a side issue that network startup is taking a full minute >>> longer than it should, but that's possibly unrelated. > > BTW that's an unrelated rng issue, for which I have a workaround. > Indeed totally unrelated, but sounds familiar. I had the same issue on a headless system which therefore generates very little entropy. I fixed it by setting CONFIG_RANDOM_TRUST_CPU=y >>> >> Thanks, Heiner > > Marc > Heiner