| Message ID | 20210714102737.198432-3-boqun.feng@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | PCI: hv: Support host bridge probing on ARM64 | expand |
Capitalize "MSI" in subject and commit log. On Wed, Jul 14, 2021 at 06:27:32PM +0800, Boqun Feng wrote: > For GENERIC_MSI_IRQ_DOMAIN drivers, we can set up the msi domain via > dev_set_msi_domain() at probing time, and drivers can use this more > generic way to set up the msi domain for the host bridge. This doesn't tell me what this patch *does* or why we need it. > This is the preparation for ARM64 Hyper-V PCI support. > > Originally-by: Arnd Bergmann <arnd@arndb.de> > Signed-off-by: Boqun Feng <boqun.feng@gmail.com> > --- > drivers/pci/probe.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c > index 60c50d4f156f..539b5139e376 100644 > --- a/drivers/pci/probe.c > +++ b/drivers/pci/probe.c > @@ -829,11 +829,14 @@ static struct irq_domain *pci_host_bridge_msi_domain(struct pci_bus *bus) > { > struct irq_domain *d; > > + /* Default set by host bridge driver */ > + d = dev_get_msi_domain(bus->bridge); Add blank line here between executable code and the following comment. > /* > * Any firmware interface that can resolve the msi_domain > * should be called from here. > */ > - d = pci_host_bridge_of_msi_domain(bus); > + if (!d) > + d = pci_host_bridge_of_msi_domain(bus); > if (!d) > d = pci_host_bridge_acpi_msi_domain(bus); > > -- > 2.30.2 >
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 60c50d4f156f..539b5139e376 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -829,11 +829,14 @@ static struct irq_domain *pci_host_bridge_msi_domain(struct pci_bus *bus) { struct irq_domain *d; + /* Default set by host bridge driver */ + d = dev_get_msi_domain(bus->bridge); /* * Any firmware interface that can resolve the msi_domain * should be called from here. */ - d = pci_host_bridge_of_msi_domain(bus); + if (!d) + d = pci_host_bridge_of_msi_domain(bus); if (!d) d = pci_host_bridge_acpi_msi_domain(bus);
For GENERIC_MSI_IRQ_DOMAIN drivers, we can set up the msi domain via dev_set_msi_domain() at probing time, and drivers can use this more generic way to set up the msi domain for the host bridge. This is the preparation for ARM64 Hyper-V PCI support. Originally-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Boqun Feng <boqun.feng@gmail.com> --- drivers/pci/probe.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)