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Add a detach method so that this can be a kldunload-friendly module.

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This commit is contained in:
Ian Lepore 2018-02-18 02:01:41 +00:00
parent 6c5aa8d10e
commit b107b904a6
1 changed files with 24 additions and 0 deletions
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24
sys/arm/freescale/imx/imx_i2c.c
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@ -154,6 +154,7 @@ struct i2c_softc {
static phandle_t i2c_get_node(device_t, device_t);
static int i2c_probe(device_t);
static int i2c_attach(device_t);
static int i2c_detach(device_t);
static int i2c_repeated_start(device_t, u_char, int);
static int i2c_start(device_t, u_char, int);
@ -165,6 +166,7 @@ static int i2c_write(device_t, const char *, int, int *, int);
static device_method_t i2c_methods[] = {
DEVMETHOD(device_probe, i2c_probe),
DEVMETHOD(device_attach, i2c_attach),
DEVMETHOD(device_detach, i2c_detach),
/* OFW methods */
DEVMETHOD(ofw_bus_get_node, i2c_get_node),
@ -448,6 +450,28 @@ no_recovery:
return (0);
}
static int
i2c_detach(device_t dev)
{
struct i2c_softc *sc;
int error;
sc = device_get_softc(dev);
if ((error = bus_generic_detach(sc->dev)) != 0) {
device_printf(sc->dev, "cannot detach child devices\n");
return (error);
}
if (sc->iicbus != NULL)
device_delete_child(dev, sc->iicbus);
if (sc->res != NULL)
bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->res);
return (0);
}
static int
i2c_repeated_start(device_t dev, u_char slave, int timeout)
{