Re: [PATCH 1/1] storvsc: Don't set the SRB_FLAGS_QUEUE_ACTION_ENABLE flag

Re: [PATCH 1/1] storvsc: Don't set the SRB_FLAGS_QUEUE_ACTION_ENABLE flag

[James Bottomley]

On Mon, 2015-08-31 at 08:21 -0700, K. Y. Srinivasan wrote:
> Don't set the SRB_FLAGS_QUEUE_ACTION_ENABLE flag since we are not specifying
> tags.

What's the actual problem description this causes?

James


> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> Cc: stable@vger.kernel.org
> ---
>  drivers/scsi/storvsc_drv.c |    3 +--
>  1 files changed, 1 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
> index 40c43ae..ad8c4bc 100644
> --- a/drivers/scsi/storvsc_drv.c
> +++ b/drivers/scsi/storvsc_drv.c
> @@ -1647,8 +1647,7 @@ static int storvsc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scmnd)
>  	vm_srb->win8_extension.time_out_value = 60;
>  
>  	vm_srb->win8_extension.srb_flags |=
> -		(SRB_FLAGS_QUEUE_ACTION_ENABLE |
> -		SRB_FLAGS_DISABLE_SYNCH_TRANSFER);
> +		SRB_FLAGS_DISABLE_SYNCH_TRANSFER;
>  
>  	/* Build the SRB */
>  	switch (scmnd->sc_data_direction) {

RE: [PATCH 1/1] storvsc: Don't set the SRB_FLAGS_QUEUE_ACTION_ENABLE flag

[KY Srinivasan]

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> -----Original Message-----
> From: James Bottomley [mailto:James.Bottomley@HansenPartnership.com]
> Sent: Monday, August 31, 2015 7:02 AM
> To: KY Srinivasan <kys@microsoft.com>
> Cc: gregkh@linuxfoundation.org; linux-kernel@vger.kernel.org;
> devel@linuxdriverproject.org; ohering@suse.com;
> jbottomley@parallels.com; hch@infradead.org; linux-scsi@vger.kernel.org;
> apw@canonical.com; vkuznets@redhat.com; jasowang@redhat.com;
> stable@vger.kernel.org
> Subject: Re: [PATCH 1/1] storvsc: Don't set the
> SRB_FLAGS_QUEUE_ACTION_ENABLE flag
> 
> On Mon, 2015-08-31 at 08:21 -0700, K. Y. Srinivasan wrote:
> > Don't set the SRB_FLAGS_QUEUE_ACTION_ENABLE flag since we are not
> specifying
> > tags.
> 
> What's the actual problem description this causes?
Qlogic driver does not work correctly if the SRB_FLAGS_QUEUE_ACTION_ENABLE
is set and no action tag is specified.

Regards,

K. Y

> 
> James
> 
> 
> > Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> > Cc: stable@vger.kernel.org
> > ---
> >  drivers/scsi/storvsc_drv.c |    3 +--
> >  1 files changed, 1 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
> > index 40c43ae..ad8c4bc 100644
> > --- a/drivers/scsi/storvsc_drv.c
> > +++ b/drivers/scsi/storvsc_drv.c
> > @@ -1647,8 +1647,7 @@ static int storvsc_queuecommand(struct
> Scsi_Host *host, struct scsi_cmnd *scmnd)
> >  	vm_srb->win8_extension.time_out_value = 60;
> >
> >  	vm_srb->win8_extension.srb_flags |=
> > -		(SRB_FLAGS_QUEUE_ACTION_ENABLE |
> > -		SRB_FLAGS_DISABLE_SYNCH_TRANSFER);
> > +		SRB_FLAGS_DISABLE_SYNCH_TRANSFER;
> >
> >  	/* Build the SRB */
> >  	switch (scmnd->sc_data_direction) {
> 
> 

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[PATCH 1/1] storvsc: Don't set the SRB_FLAGS_QUEUE_ACTION_ENABLE flag

[K. Y. Srinivasan]

Don't set the SRB_FLAGS_QUEUE_ACTION_ENABLE flag since we are not specifying
tags.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: stable@vger.kernel.org
---
 drivers/scsi/storvsc_drv.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 40c43ae..ad8c4bc 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1647,8 +1647,7 @@ static int storvsc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scmnd)
 	vm_srb->win8_extension.time_out_value = 60;
 
 	vm_srb->win8_extension.srb_flags |=
-		(SRB_FLAGS_QUEUE_ACTION_ENABLE |
-		SRB_FLAGS_DISABLE_SYNCH_TRANSFER);
+		SRB_FLAGS_DISABLE_SYNCH_TRANSFER;
 
 	/* Build the SRB */
 	switch (scmnd->sc_data_direction) {
-- 
1.7.4.1

RE: [PATCH 1/1] storvsc: Don't set the SRB_FLAGS_QUEUE_ACTION_ENABLE flag

[KY Srinivasan]

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> -----Original Message-----
> From: James Bottomley [mailto:James.Bottomley@HansenPartnership.com]
> Sent: Monday, August 31, 2015 7:02 AM
> To: KY Srinivasan <kys@microsoft.com>
> Cc: gregkh@linuxfoundation.org; linux-kernel@vger.kernel.org;
> devel@linuxdriverproject.org; ohering@suse.com;
> jbottomley@parallels.com; hch@infradead.org; linux-scsi@vger.kernel.org;
> apw@canonical.com; vkuznets@redhat.com; jasowang@redhat.com;
> stable@vger.kernel.org
> Subject: Re: [PATCH 1/1] storvsc: Don't set the
> SRB_FLAGS_QUEUE_ACTION_ENABLE flag
> 
> On Mon, 2015-08-31 at 08:21 -0700, K. Y. Srinivasan wrote:
> > Don't set the SRB_FLAGS_QUEUE_ACTION_ENABLE flag since we are not
> specifying
> > tags.
> 
> What's the actual problem description this causes?

James,

Should I resend this patch. I think I provided the clarification you had sought.

Regards,

K. Y
> 
> James
> 
> 
> > Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> > Cc: stable@vger.kernel.org
> > ---
> >  drivers/scsi/storvsc_drv.c |    3 +--
> >  1 files changed, 1 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
> > index 40c43ae..ad8c4bc 100644
> > --- a/drivers/scsi/storvsc_drv.c
> > +++ b/drivers/scsi/storvsc_drv.c
> > @@ -1647,8 +1647,7 @@ static int storvsc_queuecommand(struct
> Scsi_Host *host, struct scsi_cmnd *scmnd)
> >  	vm_srb->win8_extension.time_out_value = 60;
> >
> >  	vm_srb->win8_extension.srb_flags |=
> > -		(SRB_FLAGS_QUEUE_ACTION_ENABLE |
> > -		SRB_FLAGS_DISABLE_SYNCH_TRANSFER);
> > +		SRB_FLAGS_DISABLE_SYNCH_TRANSFER;
> >
> >  	/* Build the SRB */
> >  	switch (scmnd->sc_data_direction) {
> 
> 

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