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| author | Mika Westerberg <[email protected]> | 2022-09-05 11:02:27 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <[email protected]> | 2022-09-20 18:19:11 -0500 |
| commit | 8066cc86b7aaaf6b4b38a81932459c6450440daa (patch) | |
| tree | 2e754943d54569e9de2c836ba2ffd2bc97ea8899 /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py | |
| parent | 568035b01cfb107af8d2e4bd2fb9aea22cf5b868 (diff) | |
PCI: Fix used_buses calculation in pci_scan_child_bus_extend()
pci_scan_bridge_extend() returns the subordinate bus number needed to cover
all the buses below a bridge. pci_scan_child_bus_extend() computes the
number of buses to reserve by comparing that with the current max bus
number. Previously it did the subtraction in the wrong order, so
'used_buses' was nonsense.
Subtract 'max' from 'cmax' as is done for the similar
pci_scan_bridge_extend() call in the following block.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216000
Fixes: 3374c545c27c ("PCI: Account for all bridges on bus when distributing bus numbers")
Link: https://lore.kernel.org/r/[email protected]
Reported-by: Chris Chiu <[email protected]>
Tested-by: Chris Chiu <[email protected]>
Signed-off-by: Mika Westerberg <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py')
0 files changed, 0 insertions, 0 deletions