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Commit c56b14d2 authored by Albert Lee's avatar Albert Lee Committed by Jeff Garzik
Browse files

[PATCH] libata irq-pio: add comments and cleanup 



Signed-off-by: default avatarAlbert Lee <albertcc@tw.ibm.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
parent e50362ec

drivers/scsi/libata-core.c

+0 −12
Original line number Diff line number Diff line
@@ -3430,18 +3430,6 @@ int ata_qc_issue_prot(struct ata_queued_cmd *qc) 
		break;



	case ATA_PROT_ATAPI:

		if (qc->tf.flags & ATA_TFLAG_POLLING)

			ata_qc_set_polling(qc);



		ata_tf_to_host_nolock(ap, &qc->tf);

		ap->hsm_task_state = HSM_ST_FIRST;



		/* send cdb by polling if no cdb interrupt */

		if ((!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) ||

		    (qc->tf.flags & ATA_TFLAG_POLLING))

			queue_work(ata_wq, &ap->packet_task);

		break;



	case ATA_PROT_ATAPI_NODATA:

		if (qc->tf.flags & ATA_TFLAG_POLLING)

			ata_qc_set_polling(qc);

include/linux/libata.h

+10 −9
Original line number Diff line number Diff line
@@ -158,15 +158,16 @@ enum { 
};



enum hsm_task_states {

	HSM_ST_UNKNOWN,

	HSM_ST_IDLE,

	HSM_ST_POLL,

	HSM_ST_TMOUT,

	HSM_ST,

	HSM_ST_LAST,

	HSM_ST_LAST_POLL,

	HSM_ST_ERR,

	HSM_ST_FIRST,

	HSM_ST_UNKNOWN,		/* state unknown */

	HSM_ST_IDLE,		/* no command on going */

	HSM_ST_POLL,		/* same as HSM_ST, waits longer */

	HSM_ST_TMOUT,		/* timeout */

	HSM_ST,			/* (waiting the device to) transfer data */

	HSM_ST_LAST,		/* (waiting the device to) complete command */

	HSM_ST_LAST_POLL,	/* same as HSM_ST_LAST, waits longer */

	HSM_ST_ERR,		/* error */

	HSM_ST_FIRST,		/* (waiting the device to)

				   write CDB or first data block */

};



/* forward declarations */