scsi: NCR5380: Handle PDMA failure reliably

A PDMA error is handled in the core driver by setting the device's 'borken'
flag and aborting the command. Unfortunately, do_abort() is not
dependable. Perform a SCSI bus reset instead, to make sure that the command
fails and gets retried.

Cc: Michael Schmitz <[e-mail]>
Cc: [e-mail] # v4.20+
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Finn Thain <[e-mail]>
Tested-by: Stan Johnson <[e-mail]>
Tested-by: Michael Schmitz <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/scsi/NCR5380.c

···
 						scmd_printk(KERN_INFO, cmd,
 							"switching to slow handshake\n");
 						cmd->device->borken = 1;
-						sink = 1;
-						do_abort(instance);
-						cmd->result = DID_ERROR << 16;
-						/* XXX - need to source or sink data here, as appropriate */
+						do_reset(instance);
+						bus_reset_cleanup(instance);
 					}
 				} else {
 					/* Transfer a small chunk so that the