PCI: Shrink decoding-disabled window while sizing BARs

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__pci_read_base() disables decoding while sizing device BARs.  We can't
print while decoding is disabled, which leads to some rather messy exit
logic.

Coalesce the sizing logic to minimize the time decoding is disabled.  This
lets us print errors where they're detected.

The refactoring also takes advantage of the symmetry of obtaining the BAR's
extent (pci_size) and storing the result as the 'region' for both the
32-bit and 64-bit BARs, consolidating both cases.

No functional change intended.

[bhelgaas: move pci_size() up, per Thomas Petazzoni, Thierry Reding, Kevin Hilman]
Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Matthew Wilcox <willy@linux.intel.com>

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Myron Stowe 2014-10-30 11:54:43 -06:00 • committed by Bjorn Helgaas

parent 36e8164882

commit f795d86aaa

1 changed files with 31 additions and 46 deletions

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77

drivers/pci/probe.c

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