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Treat resources that are 0xfffff.... as being 'unassigned'.

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Reviewed by: jhb
Tested by: Mark Kirkwood
MFC After: 3 days
This commit is contained in:
Warner Losh 2005-09-01 02:42:34 +00:00
parent bdcb67f435
commit b81b5c06b4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=149686
1 changed files with 6 additions and 1 deletions
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7
sys/dev/pci/pci.c
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@ -826,9 +826,14 @@ pci_add_map(device_t pcib, device_t bus, device_t dev,
* If base is 0, then we have problems. It is best to ignore
* such entries for the moment. These will be allocated later if
* the driver specifically requests them.
*
* Similarlly treat maps whose values is the same as the test value
* read back. These maps have had all f's written to them by the
* BIOS in an attempt to disable the resources.
*/
if (base == 0)
if (base == 0 || map == testval)
return 1;
/*
* This code theoretically does the right thing, but has
* undesirable side effects in some cases where peripherals