* [PATCH] input: i reaches -1
@ 2009-01-31 10:25 Roel Kluin
2009-02-02 1:06 ` Dmitry Torokhov
0 siblings, 1 reply; 2+ messages in thread
From: Roel Kluin @ 2009-01-31 10:25 UTC (permalink / raw)
To: Dmitry Torokhov, dtor; +Cc: linux-input
With a postfix decrement i reaches -1 rather than 0,
but after the loop it is tested whether it has become 0.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
---
diff --git a/drivers/input/mouse/pxa930_trkball.c b/drivers/input/mouse/pxa930_trkball.c
index d297acc..1e827ad 100644
--- a/drivers/input/mouse/pxa930_trkball.c
+++ b/drivers/input/mouse/pxa930_trkball.c
@@ -83,7 +83,7 @@ static int write_tbcr(struct pxa930_trkball *trkball, int v)
__raw_writel(v, trkball->mmio_base + TBCR);
- while (i--) {
+ while (--i) {
if (__raw_readl(trkball->mmio_base + TBCR) == v)
break;
msleep(1);
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2009-01-31 10:25 [PATCH] input: i reaches -1 Roel Kluin
2009-02-02 1:06 ` Dmitry Torokhov
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