tree f2df9af0c11dbc0411f628d709e60de46296d799 parent 0d317fb72fe3cf0f611608cf3a3015bbe6cd2a66 author Ivan Kokshaysky <[EMAIL PROTECTED]> Sun, 07 Aug 2005 13:49:59 +0400 committer Linus Torvalds <[EMAIL PROTECTED]> Sun, 07 Aug 2005 23:50:56 -0700
[PATCH] Fix restore of 64-bit PCI BAR's For 64-bit BAR[i] only pci_dev->resource[i] is valid, ->resource[i+1] slot is unused and contains zeroes in all fields. So when we update a PCI BAR, all we need is just to check that we're going to update a _valid_ resource. Also make sure to write high bits - use "x >> 16 >> 16" (rather than the simpler ">> 32") to avoid warnings on 32-bit architectures where we're not going to have any high bits. Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]> drivers/pci/setup-res.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletion(-) 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 @@ -33,6 +33,11 @@ pci_update_resource(struct pci_dev *dev, u32 new, check, mask; int reg; + /* Ignore resources for unimplemented BARs and unused resource slots + for 64 bit BARs. */ + if (!res->flags) + return; + pcibios_resource_to_bus(dev, ®ion, res); pr_debug(" got res [%lx:%lx] bus [%lx:%lx] flags %lx for " @@ -67,7 +72,7 @@ pci_update_resource(struct pci_dev *dev, if ((new & (PCI_BASE_ADDRESS_SPACE|PCI_BASE_ADDRESS_MEM_TYPE_MASK)) == (PCI_BASE_ADDRESS_SPACE_MEMORY|PCI_BASE_ADDRESS_MEM_TYPE_64)) { - new = 0; /* currently everyone zeros the high address */ + new = region.start >> 16 >> 16; pci_write_config_dword(dev, reg + 4, new); pci_read_config_dword(dev, reg + 4, &check); if (check != new) { - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html