PCI: Reduce size of ATS structure elements
The extended capabilities list is linked with 12-bit pointers, and the ATS
Smallest Translation Unit and Invalidate Queue Depth fields are both 5
bits.
Use u16 and u8 to hold the extended capability address and the stu and qdep
values. No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 8bc16b5e..238b77e 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -376,9 +376,9 @@
struct pci_sriov *sriov; /* SR-IOV capability related */
struct pci_dev *physfn; /* the PF this VF is associated with */
};
- int ats_cap; /* ATS Capability offset */
- int ats_stu; /* ATS Smallest Translation Unit */
- int ats_qdep; /* ATS Invalidate Queue Depth */
+ u16 ats_cap; /* ATS Capability offset */
+ u8 ats_stu; /* ATS Smallest Translation Unit */
+ u8 ats_qdep; /* ATS Invalidate Queue Depth */
atomic_t ats_ref_cnt; /* number of VFs with ATS enabled */
#endif
phys_addr_t rom; /* Physical address of ROM if it's not from the BAR */
