[PATCH] mei: me: fix irq number stored in hw struct

From: Benjamin Lee
Date: Fri Apr 17 2020 - 14:54:12 EST


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>
---
drivers/misc/mei/pci-me.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c
index 3d21c38e2dbb..0c390fe421ad 100644
--- 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;

--
2.26.1