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pci_iounmap(): Fix MMIO mapping leak

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[ Upstream commit 7626913652 ]

The #ifdef ARCH_HAS_GENERIC_IOPORT_MAP accidentally also guards iounmap(),
which means MMIO mappings are leaked.

Move the guard so we call iounmap() for MMIO mappings.

Fixes: 316e8d79a0 ("pci_iounmap'2: Electric Boogaloo: try to make sense of it all")
Link: https://lore.kernel.org/r/20240131090023.12331-2-pstanner@redhat.com
Reported-by: Danilo Krummrich <dakr@redhat.com>
Suggested-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Philipp Stanner <pstanner@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: <stable@vger.kernel.org> # v5.15+
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Philipp Stanner 2024-01-31 10:00:20 +01:00 committed by Greg Kroah-Hartman
parent 12609c76b7
commit 6d21d0356a
1 changed files with 1 additions and 1 deletions
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2
lib/pci_iomap.c
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@ -170,8 +170,8 @@ void pci_iounmap(struct pci_dev *dev, void __iomem *p)
if (addr >= start && addr < start + IO_SPACE_LIMIT)
return;
iounmap(p);
#endif
iounmap(p);
}
EXPORT_SYMBOL(pci_iounmap);