diff options
| -rw-r--r-- | drivers/usb/host/xhci.h | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 0f493695610..9a7138c2903 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1223,10 +1223,7 @@ union xhci_trb { /* Allow two commands + a link TRB, along with any reserved command TRBs */ #define MAX_RSVD_CMD_TRBS (TRBS_PER_SEGMENT - 3) #define SEGMENT_SIZE (TRBS_PER_SEGMENT*16) -/* SEGMENT_SHIFT should be log2(SEGMENT_SIZE). - * Change this if you change TRBS_PER_SEGMENT! - */ -#define SEGMENT_SHIFT 10 +#define SEGMENT_SHIFT (__ffs(SEGMENT_SIZE)) /* TRB buffer pointers can't cross 64KB boundaries */ #define TRB_MAX_BUFF_SHIFT 16 #define TRB_MAX_BUFF_SIZE (1 << TRB_MAX_BUFF_SHIFT) |