diff mbox

[v2,04/11] PCI: Reduce size of ATS structure elements

Message ID 20150721001421.28145.58270.stgit@bhelgaas-glaptop2.roam.corp.google.com
State Accepted
Headers show

Commit Message

Bjorn Helgaas July 21, 2015, 12:14 a.m. UTC 
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>
---
 include/linux/pci.h |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)


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diff mbox

Patch

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 8bc16b5..238b77e 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -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 */