On Sat, 2009-09-26 at 02:24 +0800, Thomas Meyer wrote:
> Am Donnerstag, den 13.08.2009, 11:12 +0800 schrieb Lin Ming:
> > From: Lin Ming <ming.m.lin@xxxxxxxxx>
> > Date: Thu, 13 Aug 2009 11:04:47 +0800
>
> Another month, another git repository...
>
> Are there any reasons why the patch below didn't land in linus' git
> tree?
A similar patch from Bjorn Helgaas is in Linus' tree.
ACPICA: fixup after acpi_get_object_info() change
b24715027aab5e586c4ab1d035f3e543307dea69
Lin Ming
>
> > Subject: [PATCH] acpi: fix null pointer deference of hardware_id string
> >
> > This regression was caused by commit ed44482
> > "ACPICA: Major update for acpi_get_object_info external interface"
> >
> > Don't need to set hardware_id string \0 terminated here,
> > acpi_get_object_info already handles it.
> >
> > Tested-by: Thomas Meyer <thomas@xxxxxxxx>
> > Signed-off-by: Lin Ming <ming.m.lin@xxxxxxxxx>
> > ---
> > drivers/char/agp/hp-agp.c | 6 ++++--
> > drivers/pci/hotplug/acpiphp_ibm.c | 1 -
> > 2 files changed, 4 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/char/agp/hp-agp.c b/drivers/char/agp/hp-agp.c
> > index 7bead4c..d83c4a8 100644
> > --- a/drivers/char/agp/hp-agp.c
> > +++ b/drivers/char/agp/hp-agp.c
> > @@ -492,8 +492,10 @@ zx1_gart_probe (acpi_handle obj, u32 depth, void *context, void **ret)
> > status = acpi_get_object_info(handle, &info);
> > if (ACPI_SUCCESS(status)) {
> > /* TBD check _CID also */
> > - info->hardware_id.string[sizeof(info->hardware_id.length)-1] = '\0';
> > - match = (strcmp(info->hardware_id.string, "HWP0001") == 0);
> > + if (info->valid & ACPI_VALID_HID)
> > + match = !strcmp(info->hardware_id.string, "HWP0001");
> > + else
> > + match = 0;
> > kfree(info);
> > if (match) {
> > status = hp_acpi_csr_space(handle, &sba_hpa, &length);
> > diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c
> > index a9d926b..e7be66d 100644
> > --- a/drivers/pci/hotplug/acpiphp_ibm.c
> > +++ b/drivers/pci/hotplug/acpiphp_ibm.c
> > @@ -406,7 +406,6 @@ static acpi_status __init ibm_find_acpi_device(acpi_handle handle,
> > __func__, status);
> > return retval;
> > }
> > - info->hardware_id.string[sizeof(info->hardware_id.length) - 1] = '\0';
> >
> > if (info->current_status && (info->valid & ACPI_VALID_HID) &&
> > (!strcmp(info->hardware_id.string, IBM_HARDWARE_ID1) ||
> >
> >
>
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