The #ifdef for the ioport-ranges accidentally also guards iounmap(), potentially compiling an empty function. This would cause the mapping to be leaked.
Move the guard so that iounmap() will always be part of the function.
CC: stable@vger.kernel.org # v5.15+ Fixes: 316e8d79a095 ("pci_iounmap'2: Electric Boogaloo: try to make sense of it all") Reported-by: Danilo Krummrich dakr@redhat.com Suggested-by: Arnd Bergmann arnd@kernel.org Signed-off-by: Philipp Stanner pstanner@redhat.com Reviewed-by: Arnd Bergmann arnd@arndb.de --- lib/pci_iomap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/pci_iomap.c b/lib/pci_iomap.c index ce39ce9f3526..2829ddb0e316 100644 --- a/lib/pci_iomap.c +++ b/lib/pci_iomap.c @@ -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);