mvebu msi pci changes for v3.12
- introduce support for MSI on PCI
- fix s390 build breakage when !HAVE_GENERIC_HARDIRQS
NOTE: This branch is a dependency for changes going though arm-soc from both
Thomas Petazzoni and Thierry Reding.
PCI: msi: add default MSI operations for !HAVE_GENERIC_HARDIRQS platforms
Some platforms (e.g S390) don't use the generic hardirqs code and
therefore do not defined HAVE_GENERIC_HARDIRQS. This prevents using
the irq_set_chip_data() and irq_get_chip_data() functions that are
used for the default implementations of the MSI operations.
So, when CONFIG_GENERIC_HARDIRQS is not enabled, provide another
default implementation of the MSI operations, that simply errors
out. The architecture is responsible for implementing those operations
(which is the case on S390), and cannot use the msi_chip infrastructure.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
1 file changed
