Commit ca694afa authored by Finn Thain's avatar Finn Thain Committed by Martin K. Petersen
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scsi: NCR5380: Handle BUS FREE during reselection 



The X3T9.2 specification (draft) says, under "6.1.4.2 RESELECTION time-out
procedure", that a target may assert RST or go to BUS FREE phase if the
initiator does not respond within 200 us. Something like this has been
observed with AztecMonster II target. When it happens, all we can do is wait
for the target to try again.

Tested-by: default avatarMichael Schmitz <schmitzmic@gmail.com>
Signed-off-by: default avatarFinn Thain <fthain@telegraphics.com.au>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 08267216

drivers/scsi/NCR5380.c

+3 −0
Original line number Diff line number Diff line
@@ -2047,6 +2047,9 @@ static void NCR5380_reselect(struct Scsi_Host *instance) 


	if (NCR5380_poll_politely(hostdata,

	                          STATUS_REG, SR_REQ, SR_REQ, 2 * HZ) < 0) {

		if ((NCR5380_read(STATUS_REG) & (SR_BSY | SR_SEL)) == 0)

			/* BUS FREE phase */

			return;

		shost_printk(KERN_ERR, instance, "reselect: REQ timeout\n");

		do_abort(instance);

		return;