The saa7134 driver attempts to map 4K starting from the base address of
its mmio area, although lspci shows the size of the area is only 1K. The
excessive mapping goes un-noticed on bare-metal, but is detected and
denied when the card is used with pci passthrough to a xen domU. If
shared IRQ is used the "pollirq" kernel option may be required in dom0.
Signed-off-by: Andy Burns <andy@xxxxxxxxx>
--- drivers/media/video/saa7134/saa7134-core.c.orig 2008-07-01
16:46:49.000000000 +0100
+++ drivers/media/video/saa7134/saa7134-core.c 2008-07-01
16:47:10.000000000 +0100
@@ -908,7 +908,7 @@
dev->name,(unsigned long
long)pci_resource_start(pci_dev,0));
goto fail1;
}
- dev->lmmio = ioremap(pci_resource_start(pci_dev,0), 0x1000);
+ dev->lmmio = ioremap(pci_resource_start(pci_dev,0), 0x400);
dev->bmmio = (__u8 __iomem *)dev->lmmio;
if (NULL == dev->lmmio) {
err = -EIO;
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