Mark the imx_spi device busy while transfers are in progress, so that the
module can't be unloaded while interrupts are pending.
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parent
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6daa4a4079
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=345000
@ -424,6 +424,7 @@ spi_transfer(device_t dev, device_t child, struct spi_command *cmd)
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}
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mtx_lock(&sc->mtx);
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device_busy(sc->dev);
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if (sc->debug >= 1) {
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device_printf(sc->dev,
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@ -448,6 +449,7 @@ spi_transfer(device_t dev, device_t child, struct spi_command *cmd)
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spi_set_chipsel(sc, cs, false);
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WR4(sc, ECSPI_CTLREG, 0);
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device_unbusy(sc->dev);
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mtx_unlock(&sc->mtx);
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return (err);
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@ -468,11 +470,11 @@ static int
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spi_detach(device_t dev)
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{
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struct spi_softc *sc = device_get_softc(dev);
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int idx;
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int error, idx;
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mtx_lock(&sc->mtx);
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if ((error = bus_generic_detach(sc->dev)) != 0)
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return (error);
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bus_generic_detach(sc->dev);
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if (sc->spibus != NULL)
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device_delete_child(dev, sc->spibus);
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@ -488,7 +490,6 @@ spi_detach(device_t dev)
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if (sc->memres != NULL)
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bus_release_resource(sc->dev, SYS_RES_MEMORY, 0, sc->memres);
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mtx_unlock(&sc->mtx);
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mtx_destroy(&sc->mtx);
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return (0);
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