netdev - [PATCH net-next] r8169: don't use pci_irq

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <3cd24763-f307-78f5-76ed-a5fbf315fb28@gmail.com>
Date:   Tue, 28 Dec 2021 22:02:30 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Jakub Kicinski <kuba@...nel.org>,
        David Miller <davem@...emloft.net>,
        Realtek linux nic maintainers <nic_swsd@...ltek.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH net-next] r8169: don't use pci_irq_vector() in atomic context

From: Thomas Gleixner <tglx@...utronix.de>

Since referenced change pci_irq_vector() can't be used in atomic
context any longer. This conflicts with our usage of this function
in rtl8169_netpoll(). Therefore store the interrupt number in
struct rtl8169_private.

Fixes: 495c66aca3da ("genirq/msi: Convert to new functions")
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
 drivers/net/ethernet/realtek/r8169_main.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index 3d6843332..7161a5b1c 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -615,6 +615,7 @@ struct rtl8169_private {
 	struct ring_info tx_skb[NUM_TX_DESC];	/* Tx data buffers */
 	u16 cp_cmd;
 	u32 irq_mask;
+	int irq;
 	struct clk *clk;
 
 	struct {
@@ -4712,7 +4713,7 @@ static int rtl8169_close(struct net_device *dev)
 
 	cancel_work_sync(&tp->wk.work);
 
-	free_irq(pci_irq_vector(pdev, 0), tp);
+	free_irq(tp->irq, tp);
 
 	phy_disconnect(tp->phydev);
 
@@ -4733,7 +4734,7 @@ static void rtl8169_netpoll(struct net_device *dev)
 {
 	struct rtl8169_private *tp = netdev_priv(dev);
 
-	rtl8169_interrupt(pci_irq_vector(tp->pci_dev, 0), tp);
+	rtl8169_interrupt(tp->irq, tp);
 }
 #endif
 
@@ -4767,8 +4768,7 @@ static int rtl_open(struct net_device *dev)
 	rtl_request_firmware(tp);
 
 	irqflags = pci_dev_msi_enabled(pdev) ? IRQF_NO_THREAD : IRQF_SHARED;
-	retval = request_irq(pci_irq_vector(pdev, 0), rtl8169_interrupt,
-			     irqflags, dev->name, tp);
+	retval = request_irq(tp->irq, rtl8169_interrupt, irqflags, dev->name, tp);
 	if (retval < 0)
 		goto err_release_fw_2;
 
@@ -4785,7 +4785,7 @@ static int rtl_open(struct net_device *dev)
 	return retval;
 
 err_free_irq:
-	free_irq(pci_irq_vector(pdev, 0), tp);
+	free_irq(tp->irq, tp);
 err_release_fw_2:
 	rtl_release_firmware(tp);
 	rtl8169_rx_clear(tp);
@@ -5360,6 +5360,7 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 		dev_err(&pdev->dev, "Can't allocate interrupt\n");
 		return rc;
 	}
+	tp->irq = pci_irq_vector(pdev, 0);
 
 	INIT_WORK(&tp->wk.work, rtl_task);
 
@@ -5435,8 +5436,7 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 		return rc;
 
 	netdev_info(dev, "%s, %pM, XID %03x, IRQ %d\n",
-		    rtl_chip_infos[chipset].name, dev->dev_addr, xid,
-		    pci_irq_vector(pdev, 0));
+		    rtl_chip_infos[chipset].name, dev->dev_addr, xid, tp->irq);
 
 	if (jumbo_max)
 		netdev_info(dev, "jumbo features [frames: %d bytes, tx checksumming: %s]\n",
-- 
2.34.1