Andrew:
> Miguel <[email protected]> wrote:
> >
> > After switching from 2.6.13-rc7 to 2.6.13 I've started to have corrupted
> > data written on my hard disks, there was appearing blocks of 0x00 bytes
> > in between the data. I've tracked when this started to happen in the git
> > patches and I've found that this bug is due to the changes done in the
> > file drivers/pci/setup-res.c of 2.6.13-rc7-git2 patch. Now I run a 2.6.13
> > kernel with that file unmodified and everything is ok.
>
> Ugly. I assume you're referring to this?
>
> http://www.kernel.org/git/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=blobdiff;h=50d6685dcbcce801682c9600a81be2a98f90f8a1;hp=5598b4714f77ac2efaf0f545e404b4c9163c4fcf;hb=755528c860b05fcecda1c88a2bdaffcb50760a7f;f=drivers/pci/setup-res.c
>
>
> Ignore disabled ROM resources at setup
>
> Writing even a disabled value seems to mess up some matrox graphics
> cards. It may be a card-related issue, but we may also be writing
> reserved low bits in the result.
>
> This was a fall-out of switching x86 over to the generic PCI resource
> allocation code, and needs more debugging. In particular, the old x86
> code defaulted to not doing any resource allocations at all for ROM
> resources.
>
> In the meantime, this has been reported to make X happier by Helge
> Hafting <[email protected]>.
>
>
> diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
> --- a/drivers/pci/setup-res.c
> +++ b/drivers/pci/setup-res.c
> @@ -53,7 +53,9 @@ pci_update_resource(struct pci_dev *dev,
> if (resno < 6) {
> reg = PCI_BASE_ADDRESS_0 + 4 * resno;
> } else if (resno == PCI_ROM_RESOURCE) {
> - new |= res->flags & IORESOURCE_ROM_ENABLE;
> + if (!(res->flags & IORESOURCE_ROM_ENABLE))
> + return;
> + new |= PCI_ROM_ADDRESS_ENABLE;
> reg = dev->rom_base_reg;
> } else {
> /* Hmm, non-standard resource. */
>
>
Yes, that is.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
| |
 |