svn commit: r293872 - head/sys/dev/gpio

[Adrian Chadd]

Author: adrian
Date: Thu Jan 14 02:58:28 2016
New Revision: 293872
URL: https://svnweb.freebsd.org/changeset/base/293872

Log:
  [gpiobus] handle the case of there being a single GPIO pin available.
  
  PR:		kern/206035
  Submitted by:	Stanislav Galabov <sgalabov at gmail.com>

Modified:
  head/sys/dev/gpio/gpiobus.c

Modified: head/sys/dev/gpio/gpiobus.c
==============================================================================
--- head/sys/dev/gpio/gpiobus.c	Thu Jan 14 02:55:28 2016	(r293871)
+++ head/sys/dev/gpio/gpiobus.c	Thu Jan 14 02:58:28 2016	(r293872)
@@ -184,7 +184,7 @@ gpiobus_init_softc(device_t dev)
 	if (GPIO_PIN_MAX(sc->sc_dev, &sc->sc_npins) != 0)
 		return (ENXIO);
 
-	KASSERT(sc->sc_npins != 0, ("GPIO device with no pins"));
+	KASSERT(sc->sc_npins >= 0, ("GPIO device with no pins"));
 
 	/* Pins = GPIO_PIN_MAX() + 1 */
 	sc->sc_npins++;