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[media] Revert "V4L/DVB: cx23885: Enable Message Signaled Interrupts(MSI)"

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This reverts commit e38030f3ff.

MSI flat-out doesn't work right on cx2388x devices yet. There are now
multiple reports of cards that hard-lock systems when MSI is enabled,
including my own HVR-1250 when trying to use its built-in IR receiver.
Disable MSI and it works just fine. Similar for another user's HVR-1270.
Issues have also been reported with the HVR-1850 when MSI is enabled,
and the 1850 behavior sounds similar to an as-yet-undiagnosed issue I've
seen with an 1800.

CC: stable@kernel.org
CC: Steven Toth <stoth@kernellabs.com>
CC: Kusanagi Kouichi <slash@ac.auone-net.jp>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Acked-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jarod Wilson 2011-06-29 18:36:19 -03:00 committed by Mauro Carvalho Chehab
parent ddc6ff31cc
commit d7515b8866
1 changed files with 2 additions and 7 deletions
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9
drivers/media/video/cx23885/cx23885-core.c
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@ -2060,12 +2060,8 @@ static int __devinit cx23885_initdev(struct pci_dev *pci_dev,
goto fail_irq;
}
if (!pci_enable_msi(pci_dev))
err = request_irq(pci_dev->irq, cx23885_irq,
IRQF_DISABLED, dev->name, dev);
else
err = request_irq(pci_dev->irq, cx23885_irq,
IRQF_SHARED | IRQF_DISABLED, dev->name, dev);
err = request_irq(pci_dev->irq, cx23885_irq,
IRQF_SHARED | IRQF_DISABLED, dev->name, dev);
if (err < 0) {
printk(KERN_ERR "%s: can't get IRQ %d\n",
dev->name, pci_dev->irq);
@ -2114,7 +2110,6 @@ static void __devexit cx23885_finidev(struct pci_dev *pci_dev)
/* unregister stuff */
free_irq(pci_dev->irq, dev);
pci_disable_msi(pci_dev);
cx23885_dev_unregister(dev);
v4l2_device_unregister(v4l2_dev);