diff options
Diffstat (limited to 'sys/dev/iicbus/iicbb.c')
| -rw-r--r-- | sys/dev/iicbus/iicbb.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sys/dev/iicbus/iicbb.c b/sys/dev/iicbus/iicbb.c index c344bda930b0..5f6423135f46 100644 --- a/sys/dev/iicbus/iicbb.c +++ b/sys/dev/iicbus/iicbb.c @@ -331,7 +331,7 @@ iicbb_getack(device_t dev) { struct iicbb_softc *sc = device_get_softc(dev); int noack, err; - int t; + int t = 0; /* Release SDA so that the slave can drive it. */ err = iicbb_clockin(dev, 1); @@ -341,12 +341,13 @@ iicbb_getack(device_t dev) } /* Sample SDA until ACK (low) or udelay runs out. */ - for (t = 0; t < sc->udelay; t++) { + do { noack = I2C_GETSDA(dev); if (!noack) break; DELAY(1); - } + t++; + } while(t < sc->udelay); DELAY(sc->udelay - t); iicbb_clockout(dev); |