]> git.ipfire.org Git - thirdparty/linux.git/commit
comedi: amplc_dio200_pci: Conditionally remove devices that use port I/O
authorIan Abbott <abbotti@mev.co.uk>
Wed, 13 Sep 2023 17:07:09 +0000 (18:07 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 5 Oct 2023 11:34:04 +0000 (13:34 +0200)
commit772dcada0e733a567ad90cca7165c5fef2a1171c
tree8f16624b1b7a5b20eecb1ebc722506790cdf6789
parent4e1bd6724b854808aa3b94f17f5c27da59a34ff4
comedi: amplc_dio200_pci: Conditionally remove devices that use port I/O

In a future patch, the port I/O functions (`inb()`, `outb()`, and
friends will only be declared in the `HAS_IOPORT` configuration option
is enabled.

The amplc_dio200_pci module supports various Amplicon PCI and PCI
Express devices.  Some of the supported devices (the PCI ones) use port
I/O, and some of them (the PCIe ones) only use memory-mapped I/O.

Conditionally compile in support for the devices that need port I/O if
and only if the `CONFIG_HAS_IOPORT` macro is defined.

Add a run-time check in `dio200_pci_auto_attach()` to return an error if
the device actually requires port I/O (based on the PCI BAR resource
flags) but the `HAS_IOPORT` configuration option is not enabled.

Cc: Arnd Bergmann <arnd@kernel.org>
Cc: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://lore.kernel.org/r/20230913170712.111719-11-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/comedi/drivers/amplc_dio200_pci.c