PCI/sysfs: Use correct variable for the legacy_mem sysfs object

Two legacy PCI sysfs objects "legacy_io" and "legacy_mem" were updated
to use an unified address space in the commit 636b21b50152 ("PCI: Revoke
mappings like devmem").  This allows for revocations to be managed from
a single place when drivers want to take over and mmap() a /dev/mem
range.

Following the update, both of the sysfs objects should leverage the
iomem_get_mapping() function to get an appropriate address range, but
only the "legacy_io" has been correctly updated - the second attribute
seems to be using a wrong variable to pass the iomem_get_mapping()
function to.

Thus, correct the variable name used so that the "legacy_mem" sysfs
object would also correctly call the iomem_get_mapping() function.

Fixes: 636b21b50152 ("PCI: Revoke mappings like devmem")
Link: https://lore.kernel.org/r/20210812132144.791268-1-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 5d63df7..7bbf267 100644 (file)
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -978,7 +978,7 @@ void pci_create_legacy_files(struct pci_bus *b)
        b->legacy_mem->size = 1024*1024;
        b->legacy_mem->attr.mode = 0600;
        b->legacy_mem->mmap = pci_mmap_legacy_mem;
-       b->legacy_io->mapping = iomem_get_mapping();
+       b->legacy_mem->mapping = iomem_get_mapping();
        pci_adjust_legacy_attr(b, pci_mmap_mem);
        error = device_create_bin_file(&b->dev, b->legacy_mem);
        if (error)