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PCI: Fix old_size lower bound in calculate_iosize() too

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[ Upstream commit ff61f380de5652e723168341480cc7adf1dd6213 ]

Commit 903534fa7d30 ("PCI: Fix resource double counting on remove &
rescan") fixed double counting of mem resources because of old_size being
applied too early.

Fix a similar counting bug on the io resource side.

Link: https://lore.kernel.org/r/20241216175632.4175-6-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Xiaochun Lee <lixc17@lenovo.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ilpo Järvinen 2024-12-16 19:56:12 +02:00 • committed by Greg Kroah-Hartman
commit 0f0670b3b5
1 changed files with 2 additions and 4 deletions
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6
drivers/pci/setup-bus.c
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@ -800,11 +800,9 @@ static resource_size_t calculate_iosize(resource_size_t size,
size = (size & 0xff) + ((size & ~0xffUL) << 2);
#endif
size = size + size1;
if (size < old_size)
size = old_size;
size = ALIGN(max(size, add_size) + children_add_size, align);
return size;
size = max(size, add_size) + children_add_size;
return ALIGN(max(size, old_size), align);
}
static resource_size_t calculate_memsize(resource_size_t size,