can: kvaser_pciefd: Call request_irq() before enabling interrupts

commit 84762d8da89d29ba842317eb842973e628c27391 upstream.

Make sure the interrupt handler is registered before enabling interrupts.

Fixes: 26ad340e582d ("can: kvaser_pciefd: Add driver for Kvaser PCIEcan devices")
Cc: stable@vger.kernel.org
Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Link: https://lore.kernel.org/r/20230516134318.104279-4-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/can/kvaser_pciefd.c b/drivers/net/can/kvaser_pciefd.c
index 589a4b0444927dd8e32c9e0157e4f0e30f735372..99d52a64bbc69ecb4d745703ea062a1011d420c3 100644 (file)
--- a/drivers/net/can/kvaser_pciefd.c
+++ b/drivers/net/can/kvaser_pciefd.c
@@ -1825,6 +1825,11 @@ static int kvaser_pciefd_probe(struct pci_dev *pdev,
        if (err)
                goto err_teardown_can_ctrls;
 
+       err = request_irq(pcie->pci->irq, kvaser_pciefd_irq_handler,
+                         IRQF_SHARED, KVASER_PCIEFD_DRV_NAME, pcie);
+       if (err)
+               goto err_teardown_can_ctrls;
+
        iowrite32(KVASER_PCIEFD_SRB_IRQ_DPD0 | KVASER_PCIEFD_SRB_IRQ_DPD1,
                  pcie->reg_base + KVASER_PCIEFD_SRB_IRQ_REG);
 
@@ -1845,11 +1850,6 @@ static int kvaser_pciefd_probe(struct pci_dev *pdev,
        iowrite32(KVASER_PCIEFD_SRB_CMD_RDB1,
                  pcie->reg_base + KVASER_PCIEFD_SRB_CMD_REG);
 
-       err = request_irq(pcie->pci->irq, kvaser_pciefd_irq_handler,
-                         IRQF_SHARED, KVASER_PCIEFD_DRV_NAME, pcie);
-       if (err)
-               goto err_teardown_can_ctrls;
-
        err = kvaser_pciefd_reg_candev(pcie);
        if (err)
                goto err_free_irq;