Revert "adjust legacy IDE resource setting (v2)"

This reverts commit ed8ccee0.

It causes hang on boot for some users and we don't yet know why:

http://bugzilla.kernel.org/show_bug.cgi?id=7562

http://lkml.org/lkml/2007/4/20/404
http://lkml.org/lkml/2007/3/25/113

Just reverse it for 2.6.21-final, having broken X server is somehow
better than unbootable system.
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent c445a31c
...@@ -682,34 +682,7 @@ static void pci_read_irq(struct pci_dev *dev) ...@@ -682,34 +682,7 @@ static void pci_read_irq(struct pci_dev *dev)
dev->irq = irq; dev->irq = irq;
} }
static void change_legacy_io_resource(struct pci_dev * dev, unsigned index, #define LEGACY_IO_RESOURCE (IORESOURCE_IO | IORESOURCE_PCI_FIXED)
unsigned start, unsigned end)
{
unsigned base = start & PCI_BASE_ADDRESS_IO_MASK;
unsigned len = (end | ~PCI_BASE_ADDRESS_IO_MASK) - base + 1;
/*
* Some X versions get confused when the BARs reported through
* /sys or /proc differ from those seen in config space, thus
* try to update the config space values, too.
*/
if (!(pci_resource_flags(dev, index) & IORESOURCE_IO))
printk(KERN_WARNING "%s: cannot adjust BAR%u (not I/O)\n",
pci_name(dev), index);
else if (pci_resource_len(dev, index) != len)
printk(KERN_WARNING "%s: cannot adjust BAR%u (size %04X)\n",
pci_name(dev), index, (unsigned)pci_resource_len(dev, index));
else {
printk(KERN_INFO "%s: trying to change BAR%u from %04X to %04X\n",
pci_name(dev), index,
(unsigned)pci_resource_start(dev, index), base);
pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + index * 4, base);
}
pci_resource_start(dev, index) = start;
pci_resource_end(dev, index) = end;
pci_resource_flags(dev, index) =
IORESOURCE_IO | IORESOURCE_PCI_FIXED | PCI_BASE_ADDRESS_SPACE_IO;
}
/** /**
* pci_setup_device - fill in class and map information of a device * pci_setup_device - fill in class and map information of a device
...@@ -762,12 +735,20 @@ static int pci_setup_device(struct pci_dev * dev) ...@@ -762,12 +735,20 @@ static int pci_setup_device(struct pci_dev * dev)
u8 progif; u8 progif;
pci_read_config_byte(dev, PCI_CLASS_PROG, &progif); pci_read_config_byte(dev, PCI_CLASS_PROG, &progif);
if ((progif & 1) == 0) { if ((progif & 1) == 0) {
change_legacy_io_resource(dev, 0, 0x1F0, 0x1F7); dev->resource[0].start = 0x1F0;
change_legacy_io_resource(dev, 1, 0x3F6, 0x3F6); dev->resource[0].end = 0x1F7;
dev->resource[0].flags = LEGACY_IO_RESOURCE;
dev->resource[1].start = 0x3F6;
dev->resource[1].end = 0x3F6;
dev->resource[1].flags = LEGACY_IO_RESOURCE;
} }
if ((progif & 4) == 0) { if ((progif & 4) == 0) {
change_legacy_io_resource(dev, 2, 0x170, 0x177); dev->resource[2].start = 0x170;
change_legacy_io_resource(dev, 3, 0x376, 0x376); dev->resource[2].end = 0x177;
dev->resource[2].flags = LEGACY_IO_RESOURCE;
dev->resource[3].start = 0x376;
dev->resource[3].end = 0x376;
dev->resource[3].flags = LEGACY_IO_RESOURCE;
} }
} }
break; break;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment