diff options
Diffstat (limited to 'drivers/usb/host/xhci-ext-caps.h')
| -rw-r--r-- | drivers/usb/host/xhci-ext-caps.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/usb/host/xhci-ext-caps.h b/drivers/usb/host/xhci-ext-caps.h index bf7316e130d3..268328c20681 100644 --- a/drivers/usb/host/xhci-ext-caps.h +++ b/drivers/usb/host/xhci-ext-caps.h @@ -39,6 +39,8 @@ #define XHCI_EXT_CAPS_ROUTE 5 /* IDs 6-9 reserved */ #define XHCI_EXT_CAPS_DEBUG 10 +/* Vendor caps */ +#define XHCI_EXT_CAPS_VENDOR_INTEL 192 /* USB Legacy Support Capability - section 7.1.1 */ #define XHCI_HC_BIOS_OWNED (1 << 16) #define XHCI_HC_OS_OWNED (1 << 24) @@ -84,7 +86,8 @@ * @base PCI MMIO registers base address. * @start address at which to start looking, (0 or HCC_PARAMS to start at * beginning of list) - * @id Extended capability ID to search for. + * @id Extended capability ID to search for, or 0 for the next + * capability * * Returns the offset of the next matching extended capability structure. * Some capabilities can occur several times, e.g., the XHCI_EXT_CAPS_PROTOCOL, @@ -110,7 +113,7 @@ static inline int xhci_find_next_ext_cap(void __iomem *base, u32 start, int id) val = readl(base + offset); if (val == ~0) return 0; - if (XHCI_EXT_CAPS_ID(val) == id && offset != start) + if (offset != start && (id == 0 || XHCI_EXT_CAPS_ID(val) == id)) return offset; next = XHCI_EXT_CAPS_NEXT(val); |