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Subject: media: cx25821: Fix the warning when removing the module
Author:  Zheyu Ma <[email protected]>
Date:    Sun Apr 10 08:44:09 2022 +0100

When removing the module, we will get the following warning:

[   14.746697] remove_proc_entry: removing non-empty directory 'irq/21', 
leaking at least 'cx25821[1]'
[   14.747449] WARNING: CPU: 4 PID: 368 at fs/proc/generic.c:717 
remove_proc_entry+0x389/0x3f0
[   14.751611] RIP: 0010:remove_proc_entry+0x389/0x3f0
[   14.759589] Call Trace:
[   14.759792]  <TASK>
[   14.759975]  unregister_irq_proc+0x14c/0x170
[   14.760340]  irq_free_descs+0x94/0xe0
[   14.760640]  mp_unmap_irq+0xb6/0x100
[   14.760937]  acpi_unregister_gsi_ioapic+0x27/0x40
[   14.761334]  acpi_pci_irq_disable+0x1d3/0x320
[   14.761688]  pci_disable_device+0x1ad/0x380
[   14.762027]  ? _raw_spin_unlock_irqrestore+0x2d/0x60
[   14.762442]  ? cx25821_shutdown+0x20/0x9f0 [cx25821]
[   14.762848]  cx25821_finidev+0x48/0xc0 [cx25821]
[   14.763242]  pci_device_remove+0x92/0x240

Fix this by freeing the irq before call pci_disable_device().

Signed-off-by: Zheyu Ma <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

 drivers/media/pci/cx25821/cx25821-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

---

diff --git a/drivers/media/pci/cx25821/cx25821-core.c 
b/drivers/media/pci/cx25821/cx25821-core.c
index 3078a39f0b95..6627fa9166d3 100644
--- a/drivers/media/pci/cx25821/cx25821-core.c
+++ b/drivers/media/pci/cx25821/cx25821-core.c
@@ -1332,11 +1332,11 @@ static void cx25821_finidev(struct pci_dev *pci_dev)
        struct cx25821_dev *dev = get_cx25821(v4l2_dev);
 
        cx25821_shutdown(dev);
-       pci_disable_device(pci_dev);
 
        /* unregister stuff */
        if (pci_dev->irq)
                free_irq(pci_dev->irq, dev);
+       pci_disable_device(pci_dev);
 
        cx25821_dev_unregister(dev);
        v4l2_device_unregister(v4l2_dev);

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