- ioaddr->data_addr ^= 0x02;
- ioaddr->cmd_addr ^= 0x03;
- ioaddr->altstatus_addr ^= 0x03;
- ioaddr->ctl_addr ^= 0x03;
- ioaddr->error_addr ^= 0x03;
- ioaddr->feature_addr ^= 0x03;
- ioaddr->nsect_addr ^= 0x03;
- ioaddr->lbal_addr ^= 0x03;
- ioaddr->lbam_addr ^= 0x03;
- ioaddr->lbah_addr ^= 0x03;
- ioaddr->device_addr ^= 0x03;
- ioaddr->status_addr ^= 0x03;
- ioaddr->command_addr ^= 0x03;
+ *(unsigned long *)&ioaddr->data_addr ^= 0x02;
+ *(unsigned long *)&ioaddr->cmd_addr ^= 0x03;
+ *(unsigned long *)&ioaddr->altstatus_addr ^= 0x03;
+ *(unsigned long *)&ioaddr->ctl_addr ^= 0x03;
+ *(unsigned long *)&ioaddr->error_addr ^= 0x03;
+ *(unsigned long *)&ioaddr->feature_addr ^= 0x03;
+ *(unsigned long *)&ioaddr->nsect_addr ^= 0x03;
+ *(unsigned long *)&ioaddr->lbal_addr ^= 0x03;
+ *(unsigned long *)&ioaddr->lbam_addr ^= 0x03;
+ *(unsigned long *)&ioaddr->lbah_addr ^= 0x03;
+ *(unsigned long *)&ioaddr->device_addr ^= 0x03;
+ *(unsigned long *)&ioaddr->status_addr ^= 0x03;
+ *(unsigned long *)&ioaddr->command_addr ^= 0x03;