aboutsummaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
authorDmitry Torokhov <dtor@vmware.com>2011-03-20 02:15:17 -0700
committerSarah Sharp <sarah.a.sharp@linux.intel.com>2011-04-13 16:19:46 -0700
commit5a6c2f3ff039154872ce597952f8b8900ea0d732 (patch)
treeec159272a5031ac9baa7c98dcbb09ca58b96050a /drivers
parent2868a2b1ba8f9c7f6c4170519ebb6c62934df70e (diff)
USB: xhci - fix unsafe macro definitions
Macro arguments used in expressions need to be enclosed in parenthesis to avoid unpleasant surprises. This should be queued for kernels back to 2.6.31 Signed-off-by: Dmitry Torokhov <dtor@vmware.com> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: stable@kernel.org
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/host/xhci.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 07e263063e37..91b1a237c11e 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -232,7 +232,7 @@ struct xhci_op_regs {
* notification type that matches a bit set in this bit field.
*/
#define DEV_NOTE_MASK (0xffff)
-#define ENABLE_DEV_NOTE(x) (1 << x)
+#define ENABLE_DEV_NOTE(x) (1 << (x))
/* Most of the device notification types should only be used for debug.
* SW does need to pay attention to function wake notifications.
*/
@@ -601,11 +601,11 @@ struct xhci_ep_ctx {
#define EP_STATE_STOPPED 3
#define EP_STATE_ERROR 4
/* Mult - Max number of burtst within an interval, in EP companion desc. */
-#define EP_MULT(p) ((p & 0x3) << 8)
+#define EP_MULT(p) (((p) & 0x3) << 8)
/* bits 10:14 are Max Primary Streams */
/* bit 15 is Linear Stream Array */
/* Interval - period between requests to an endpoint - 125u increments. */
-#define EP_INTERVAL(p) ((p & 0xff) << 16)
+#define EP_INTERVAL(p) (((p) & 0xff) << 16)
#define EP_INTERVAL_TO_UFRAMES(p) (1 << (((p) >> 16) & 0xff))
#define EP_MAXPSTREAMS_MASK (0x1f << 10)
#define EP_MAXPSTREAMS(p) (((p) << 10) & EP_MAXPSTREAMS_MASK)

Privacy Policy