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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>
This commit is contained in:
Bjorn Helgaas 2015-07-17 15:27:34 -05:00
parent d544d75ac9
commit 67930995d7
1 changed files with 3 additions and 3 deletions
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6
include/linux/pci.h
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@ -376,9 +376,9 @@ struct pci_dev {
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 */