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* [Linux-kernel-mentees] [PATCH] PCI: Add _DSM Function definiton for Latency Tolerance Reporting
@ 2020-07-19  9:21 Puranjay Mohan
  0 siblings, 0 replies; only message in thread
From: Puranjay Mohan @ 2020-07-19  9:21 UTC (permalink / raw)
  To: Bjorn Helgaas; +Cc: linux-pci, linux-kernel-mentees, Puranjay Mohan

PCI Firmware spec rev 3.2 defines function index 6 for LTR _DSM
Add a define for usage in LTR mechanism.

Signed-off-by: Puranjay Mohan <>
 include/linux/pci-acpi.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h
index 5ba475ca9078..2889bf7f2a39 100644
--- a/include/linux/pci-acpi.h
+++ b/include/linux/pci-acpi.h
@@ -110,6 +110,7 @@ extern const guid_t pci_acpi_dsm_guid;
 /* _DSM Definitions for PCI */
+#define DSM_PCI_LTR				0x06
 #define DSM_PCI_DEVICE_NAME			0x07

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