[PATCH v4 1/9] PCI: Add dev_is_untrusted helper

Lu Baolu
2019-06-03T01:23:43Z

There are several places in the kernel where it is necessary to
check whether a device is a pci untrusted device. Add a helper
to simplify the callers.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
---
include/linux/pci.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 4a5a84d7bdd4..0582d869923d 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -979,6 +979,7 @@ void pcibios_setup_bridge(struct pci_bus *bus, unsigned long type);
void pci_sort_breadthfirst(void);
#define dev_is_pci(d) ((d)->bus == &pci_bus_type)
#define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false))
+#define dev_is_untrusted(d) ((dev_is_pci(d) ? to_pci_dev(d)->untrusted : false))

/* Generic PCI functions exported to card drivers */

@@ -1707,6 +1708,7 @@ static inline struct pci_dev *pci_dev_get(struct pci_dev *dev) { return NULL; }

#define dev_is_pci(d) (false)
#define dev_is_pf(d) (false)
+#define dev_is_untrusted(d) (false)
static inline bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags)
{ return false; }
static inline int pci_irqd_intx_xlate(struct irq_domain *d,
--
2.17.1