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| author | Niklas Schnelle <schnelle@linux.ibm.com> | 2023-07-03 15:52:55 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2023-07-18 23:56:58 +0200 |
| commit | 5da1b58868a620cb58ad9ab31632ce9304c9f4f4 (patch) | |
| tree | 811c20bb22b4b28e98c5e6052541fa5bfb68f3ab /drivers/pci/pci-sysfs.c | |
| parent | PCI: Make quirk using inw() depend on HAS_IOPORT (diff) | |
| download | linux-5da1b58868a620cb58ad9ab31632ce9304c9f4f4.tar.xz linux-5da1b58868a620cb58ad9ab31632ce9304c9f4f4.zip | |
PCI/sysfs: Make I/O resource depend on HAS_IOPORT
If legacy I/O spaces are not supported simply return an error when
trying to access them via pci_resource_io(). This allows inb() and
friends to become undefined when they are known at compile time to be
non-functional in a later patch.
Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Link: https://lore.kernel.org/r/20230703135255.2202721-3-schnelle@linux.ibm.com
Signed-off-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/pci-sysfs.c')
| -rw-r--r-- | drivers/pci/pci-sysfs.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index ab32a91f287b..d9eede2dbc0e 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -1083,6 +1083,7 @@ static ssize_t pci_resource_io(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count, bool write) { +#ifdef CONFIG_HAS_IOPORT struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj)); int bar = (unsigned long)attr->private; unsigned long port = off; @@ -1116,6 +1117,9 @@ static ssize_t pci_resource_io(struct file *filp, struct kobject *kobj, return 4; } return -EINVAL; +#else + return -ENXIO; +#endif } static ssize_t pci_read_resource_io(struct file *filp, struct kobject *kobj, |