Flipping a bit doesn't need four lines of code; and gcc seems to
actually generate two branches.
Signed-off-by: Rasmus Villemoes <li...@rasmusvillemoes.dk>
---
drivers/sbus/char/display7seg.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
index 7c71e7b..3221dff 100644
--- a/drivers/sbus/char/display7seg.c
+++ b/drivers/sbus/char/display7seg.c
@@ -143,10 +143,7 @@ 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;
}
--
1.9.2
--
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