Provided by: linux-doc-2.6.15_2.6.15-23.39_all bug

NAME

       ata_qc_timeout - Handle timeout of queued command

SYNOPSIS

       void ata_qc_timeout  (struct ata_queued_cmd * qc);

ARGUMENTS

       qc     Command that timed out

DESCRIPTION

       Some  part  of  the kernel (currently, only the SCSI layer) has noticed
       that the active command on port ap has not completed after a  specified
       length  of  time. Handle this condition by disabling DMA (if necessary)
       and completing transactions, with error if necessary.

       This also handles the case of the ‘‘lost interrupt’’,  where  for  some
       reason  (possibly  hardware  bug, possibly driver bug) an interrupt was
       not delivered to the driver,  even  though  the  transaction  completed
       successfully.

LOCKING

       Inherited from SCSI layer (none, can sleep)

AUTHOR

       Jeff Garzik.