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Staging: iio: fix endian conversion in ad7298_scan_direct()
"tmp" is used to store the output from cpu_to_be16() so it should be a __be16 bit type. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -69,27 +69,28 @@ static int ad7298_scan_direct(struct ad7298_state *st, unsigned ch)
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static int ad7298_scan_temp(struct ad7298_state *st, int *val)
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{
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int tmp, ret;
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__be16 buf;
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tmp = cpu_to_be16(AD7298_WRITE | AD7298_TSENSE |
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buf = cpu_to_be16(AD7298_WRITE | AD7298_TSENSE |
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AD7298_TAVG | st->ext_ref);
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ret = spi_write(st->spi, (u8 *)&tmp, 2);
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ret = spi_write(st->spi, (u8 *)&buf, 2);
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if (ret)
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return ret;
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tmp = 0;
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buf = cpu_to_be16(0);
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ret = spi_write(st->spi, (u8 *)&tmp, 2);
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ret = spi_write(st->spi, (u8 *)&buf, 2);
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if (ret)
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return ret;
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usleep_range(101, 1000); /* sleep > 100us */
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ret = spi_read(st->spi, (u8 *)&tmp, 2);
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ret = spi_read(st->spi, (u8 *)&buf, 2);
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if (ret)
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return ret;
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tmp = be16_to_cpu(tmp) & RES_MASK(AD7298_BITS);
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tmp = be16_to_cpu(buf) & RES_MASK(AD7298_BITS);
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/*
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* One LSB of the ADC corresponds to 0.25 deg C.
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