diff options
Diffstat (limited to 'drivers/usb/host/ehci.h')
| -rw-r--r-- | drivers/usb/host/ehci.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 1441e34007..d7a3c8d13f 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -321,10 +321,16 @@ struct ehci_qtd { size_t length; /* length of buffer */ } __aligned(32); +/* PID Codes that are used here, from EHCI specification, Table 3-16. */ +#define PID_CODE_OUT 0 +#define PID_CODE_IN 1 +#define PID_CODE_SETUP 2 + /* mask NakCnt+T in qh->hw_alt_next */ #define QTD_MASK(ehci) cpu_to_hc32(ehci, ~0x1f) -#define IS_SHORT_READ(token) (QTD_LENGTH(token) != 0 && QTD_PID(token) == 1) +#define IS_SHORT_READ(token) (QTD_LENGTH(token) != 0 && \ + QTD_PID(token) == PID_CODE_IN) /*-------------------------------------------------------------------------*/ |