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Commit efc7a288 authored by Anil Chintalapati (achintal)'s avatar Anil Chintalapati (achintal) Committed by Christoph Hellwig
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fnic: IOMMU Fault occurs when IO and abort IO is out of order 



When I/O is aborted by mid-layer, fnic FW will complete the I/O before
completing the abort task. In some cases abort request is completed before
the I/O, which could lead to inconsistent driver and firmware states.
In this case firmware reset would clear the inconsistent state.

Signed-off-by: default avatarAnil Chintalapati <achintal@cisco.com>
Signed-off-by: default avatarSesidhar Baddela <sebaddel@cisco.com>
Signed-off-by: default avatarHiral Shah <hishah@cisco.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent e461338b

drivers/scsi/fnic/fnic.h

+1 −1
Original line number Diff line number Diff line
@@ -39,7 +39,7 @@ 


#define DRV_NAME		"fnic"

#define DRV_DESCRIPTION		"Cisco FCoE HBA Driver"

#define DRV_VERSION		"1.6.0.16"

#define DRV_VERSION		"1.6.0.17"

#define PFX			DRV_NAME ": "

#define DFX                     DRV_NAME "%d: "

drivers/scsi/fnic/fnic_scsi.c

+15 −0
Original line number Diff line number Diff line
@@ -1892,6 +1892,21 @@ int fnic_abort_cmd(struct scsi_cmnd *sc) 
		goto fnic_abort_cmd_end;

	}



	/* IO out of order */



	if (!(CMD_FLAGS(sc) & (FNIC_IO_ABORTED | FNIC_IO_DONE))) {

		spin_unlock_irqrestore(io_lock, flags);

		FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,

			"Issuing Host reset due to out of order IO\n");



		if (fnic_host_reset(sc) == FAILED) {

			FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,

				"fnic_host_reset failed.\n");

		}

		ret = FAILED;

		goto fnic_abort_cmd_end;

	}



	CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE;



	/*