taglinefilesource code
HD_ERROR152drivers/block/hd.chd_error = inb(HD_ERROR);
HD_ERROR383drivers/block/hd.celse if ((hd_error = inb(HD_ERROR)) != 1)
HD_ERROR208drivers/block/ide-cd.cerr = IN_BYTE (HD_ERROR, dev->hwif);
HD_ERROR267drivers/block/ide.c#define GET_ERR(hwif)    IN_BYTE(HD_ERROR,hwif)
HD_ERROR22include/linux/hdreg.h#define HD_FEATURE HD_ERROR  /* same io address, read=error, write=feature */