RE: [PATCH RESEND 1/1] Drivers: scsi: storvsc: Properly handleerrors from the host

[KY Srinivasan]

> -----Original Message-----
> From: KY Srinivasan
> Sent: Tuesday, April 10, 2012 11:14 AM
> To: KY Srinivasan; gregkh@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> devel@xxxxxxxxxxxxxxxxxxxxxx; virtualization@xxxxxxxxxxxxxx; ohering@xxxxxxxx;
> jbottomley@xxxxxxxxxxxxx; hch@xxxxxxxxxxxxx; linux-scsi@xxxxxxxxxxxxxxx;
> apw@xxxxxxxxxxxxx
> Subject: RE: [PATCH RESEND 1/1] Drivers: scsi: storvsc: Properly handle errors
> from the host
> 
> 
> 
> > -----Original Message-----
> > From: K. Y. Srinivasan [mailto:kys@xxxxxxxxxxxxx]
> > Sent: Thursday, April 05, 2012 3:27 PM
> > To: gregkh@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> > devel@xxxxxxxxxxxxxxxxxxxxxx; virtualization@xxxxxxxxxxxxxx; ohering@xxxxxxxx;
> > jbottomley@xxxxxxxxxxxxx; hch@xxxxxxxxxxxxx; linux-scsi@xxxxxxxxxxxxxxx;
> > apw@xxxxxxxxxxxxx
> > Cc: KY Srinivasan
> > Subject: [PATCH RESEND 1/1] Drivers: scsi: storvsc: Properly handle errors from
> > the host
> >
> > If the host returns error for pass through commands, deal with them
> > appropriately. I would like to thank James for patiently helping
> > me with this patch.
> 
> James,
> 
> Thank you for suggesting the fix here. I hope this is what you were looking for.
> 
> Regards,
> 
> K. Y

Ping.

> >
> > Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
> > Reviewed-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
> > ---
> >  drivers/scsi/storvsc_drv.c |   20 +++++++++++++++-----
> >  1 files changed, 15 insertions(+), 5 deletions(-)
> >
> > diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
> > index 83a1972..528d52b 100644
> > --- a/drivers/scsi/storvsc_drv.c
> > +++ b/drivers/scsi/storvsc_drv.c
> > @@ -785,12 +785,22 @@ static void storvsc_command_completion(struct
> > storvsc_cmd_request *cmd_request)
> >  	/*
> >  	 * If there is an error; offline the device since all
> >  	 * error recovery strategies would have already been
> > -	 * deployed on the host side.
> > +	 * deployed on the host side. However, if the command
> > +	 * were a pass-through command deal with it appropriately.
> >  	 */
> > -	if (vm_srb->srb_status == SRB_STATUS_ERROR)
> > -		scmnd->result = DID_TARGET_FAILURE << 16;
> > -	else
> > -		scmnd->result = vm_srb->scsi_status;
> > +	scmnd->result = vm_srb->scsi_status;
> > +
> > +	if (vm_srb->srb_status == SRB_STATUS_ERROR) {
> > +		switch (scmnd->cmnd[0]) {
> > +		case ATA_16:
> > +		case ATA_12:
> > +			set_host_byte(scmnd, DID_PASSTHROUGH);
> > +			break;
> > +		default:
> > +			set_host_byte(scmnd, DID_TARGET_FAILURE);
> > +		}
> > +	}
> > +
> >
> >  	/*
> >  	 * If the LUN is invalid; remove the device.
> > --
> > 1.7.4.1
> >
> >
> >



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