mei: me: fix irq number stored in hw struct

Commit 261b3e1f2a01 ("mei: me: store irq number in the hw struct.")
stores the irq number in the hw struct before MSI is enabled.  This
caused a regression for mei_me_synchronize_irq() waiting for the wrong
irq number.  On my laptop this causes a hang on shutdown.  Fix the issue
by storing the irq number after enabling MSI.

Fixes: 261b3e1f2a01 ("mei: me: store irq number in the hw struct.")
Signed-off-by: Benjamin Lee <ben@b1c1l1.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200417184538.349550-1-ben@b1c1l1.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c
index 3d21c38..0c390fe 100644 (file)
--- a/drivers/misc/mei/pci-me.c
+++ b/drivers/misc/mei/pci-me.c
@@ -203,11 +203,12 @@ static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
        }
        hw = to_me_hw(dev);
        hw->mem_addr = pcim_iomap_table(pdev)[0];
-       hw->irq = pdev->irq;
        hw->read_fws = mei_me_read_fws;
 
        pci_enable_msi(pdev);
 
+       hw->irq = pdev->irq;
+
         /* request and enable interrupt */
        irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED;