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void smbus_read_byte(void)
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{
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unsigned char host_status_register;
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unsigned char byte;
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int result;
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host_status_register = __builtin_inb(0x1234);
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/* read results of transaction */
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byte = __builtin_inb(0x4567);
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result = byte;
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if (host_status_register != 0x02) {
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result = -1;
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}
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}
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