diff options
| author | Alexander Yurchenko <grange@cvs.openbsd.org> | 2006-01-18 21:47:09 +0000 |
|---|---|---|
| committer | Alexander Yurchenko <grange@cvs.openbsd.org> | 2006-01-18 21:47:09 +0000 |
| commit | cda8555cd2832d9efaed207126f42de7e4f1dac5 (patch) | |
| tree | 4a0225e9ebc60575b5fb98e0eed3f85b4fbdf2f0 /sys/dev/gpio | |
| parent | 9249b6eba6dc280fabd58a9e18a8e10bf82e72a6 (diff) | |
Check that SDA pin is able to read input.
Diffstat (limited to 'sys/dev/gpio')
| -rw-r--r-- | sys/dev/gpio/gpioiic.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/dev/gpio/gpioiic.c b/sys/dev/gpio/gpioiic.c index 955f66d05b9..080fe6ea662 100644 --- a/sys/dev/gpio/gpioiic.c +++ b/sys/dev/gpio/gpioiic.c @@ -1,4 +1,4 @@ -/* $OpenBSD: gpioiic.c,v 1.4 2006/01/17 22:57:47 grange Exp $ */ +/* $OpenBSD: gpioiic.c,v 1.5 2006/01/18 21:47:08 grange Exp $ */ /* * Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org> @@ -122,6 +122,10 @@ gpioiic_attach(struct device *parent, struct device *self, void *aux) printf(": SDA pin is unable to drive output\n"); goto fail; } + if (!(caps & GPIO_PIN_INPUT)) { + printf(": SDA pin is unable to read input\n"); + goto fail; + } printf(": SDA[%d]", sc->sc_map.pm_map[GPIOIIC_PIN_SDA]); sc->sc_sda = GPIO_PIN_OUTPUT; if (caps & GPIO_PIN_OPENDRAIN) { |