diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2020-12-05 00:14:07 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2020-12-05 00:14:07 +0300 |
| commit | ee8b1c478a9fbce9c64151ee561c124c4dcd66be (patch) | |
| tree | 8334858dc67e42594063c7fa9b97887277a5a4eb /include/linux/pci.h | |
| parent | f646c2a0a6685a8a30a150509b112c911b8feff3 (diff) | |
| download | linux-ee8b1c478a9fbce9c64151ee561c124c4dcd66be.tar.xz | |
PCI: Return u16 from pci_find_ext_capability() and similar
PCI Express Extended Capabilities are in config space between offsets 256
and 4K. These offsets all fit in 16 bits.
Change the return type of pci_find_ext_capability() and supporting
functions from int to u16 to match the specification. Many callers use
"int", which is fine, but there's no need to store more than a u16.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index e615f8abdd79..441e5753da0c 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -381,7 +381,7 @@ struct pci_dev { struct pcie_link_state *link_state; /* ASPM link state */ unsigned int ltr_path:1; /* Latency Tolerance Reporting supported from root to here */ - int l1ss; /* L1SS Capability pointer */ + u16 l1ss; /* L1SS Capability pointer */ #endif unsigned int eetlp_prefix_path:1; /* End-to-End TLP Prefix */ @@ -1069,8 +1069,8 @@ u8 pci_find_capability(struct pci_dev *dev, int cap); u8 pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap); u8 pci_find_ht_capability(struct pci_dev *dev, int ht_cap); u8 pci_find_next_ht_capability(struct pci_dev *dev, u8 pos, int ht_cap); -int pci_find_ext_capability(struct pci_dev *dev, int cap); -int pci_find_next_ext_capability(struct pci_dev *dev, int pos, int cap); +u16 pci_find_ext_capability(struct pci_dev *dev, int cap); +u16 pci_find_next_ext_capability(struct pci_dev *dev, u16 pos, int cap); struct pci_bus *pci_find_next_bus(const struct pci_bus *from); u64 pci_get_dsn(struct pci_dev *dev); |