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Thu, 17 Sep 2026 18:50:34 -0700 (PDT) Received: from remote-01 ([84.17.55.229]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-487200745b5sm64224f8f.26.2026.09.17.18.50.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Sep 2026 18:50:34 -0700 (PDT) From: Aleksei Sviridkin To: netdev@vger.kernel.org Cc: andrew@lunn.ch, andrew+netdev@lunn.ch, hkallweit1@gmail.com, linux@armlinux.org.uk, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, olteanv@gmail.com, Thangaraj.S@microchip.com, UNGLinuxDriver@microchip.com, steve.glendinning@shawell.net, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Aleksei Sviridkin Subject: [PATCH net v8 2/4] net: usb: smsc95xx: register the PHY interrupt with the MDIO bus Date: Fri, 18 Sep 2026 04:50:27 +0300 Message-ID: <20260918015029.2518425-3-f@lex.la> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260918015029.2518425-1-f@lex.la> References: <20260918015029.2518425-1-f@lex.la> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The interrupt this driver maps for its PHY is written only into phydev->irq, while the bus table mdiobus->irq[] keeps reading PHY_POLL for the same address. That table is where phylib records what the bus described - phy_device_create() seeds phydev->irq from it - so the number lives only as long as nothing else writes that one field. The bus is the one this function registered a few lines earlier, so record the number there as well. Assisted-by: LLM Signed-off-by: Aleksei Sviridkin --- Notes: Compile-tested only; I have no LAN95xx device. No Fixes: tag, for the same reason as patch 1: the write has no reader until patch 3 lands. Teardown order keeps the number live for as long as it is read: smsc95xx_unbind() disconnects the PHY before it disposes the interrupt mapping. drivers/net/usb/smsc95xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c index 42e4048b574b..130a460c1f54 100644 --- a/drivers/net/usb/smsc95xx.c +++ b/drivers/net/usb/smsc95xx.c @@ -1252,6 +1252,7 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf) goto unregister_mdio; } + pdata->mdiobus->irq[pdata->phydev->mdio.addr] = phy_irq; pdata->phydev->irq = phy_irq; pdata->phydev->is_internal = pdata->is_internal_phy; -- 2.53.0