From: David Howells <[email protected]> Use ilog2() rather than __ffs() for calculating SEGMENT_SHIFT as ilog2() can be worked out at compile time, whereas __ffs() must be calculated at runtime.
Signed-off-by: David Howells <[email protected]> cc: Sarah Sharp <[email protected]> cc: Greg Kroah-Hartman <[email protected]> cc: [email protected] Signed-off-by: Sarah Sharp <[email protected]> --- drivers/usb/host/xhci.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 6358271..ca550dd 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1239,7 +1239,7 @@ 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) -#define SEGMENT_SHIFT (__ffs(SEGMENT_SIZE)) +#define SEGMENT_SHIFT (ilog2(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) -- 1.7.9 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
