drivers/sbus/char: Micro-optimization in display7seg.c

Flipping a bit doesn't need four lines of code; and gcc seems to
actually generate two branches.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
index b48899ce8506..2b0ce7c350ee 100644
--- a/drivers/sbus/char/display7seg.c
+++ b/drivers/sbus/char/display7seg.c
@@ -144,10 +144,7 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 
         case D7SIOCTM:
                 /* toggle device mode-- flip display orientation */
-                if (regs & D7S_FLIP)
-                        regs &= ~D7S_FLIP;
-                else
-                        regs |= D7S_FLIP;
+                regs ^= D7S_FLIP;
                 writeb(regs, p->regs);
                 break;
         }