From: Benjamin Lee <ben@xxxxxxxxxx>
commit fec874a81b3ec280b91034d892a432fc71fd1522 upstream.
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@xxxxxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20200417184538.349550-1-ben@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/misc/mei/pci-me.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/misc/mei/pci-me.c
+++ b/drivers/misc/mei/pci-me.c
@@ -212,11 +212,12 @@ static int mei_me_probe(struct pci_dev *
}
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;
