[PATCH] drivers/scsi/ipr.c: reorder error handling code to include iounmap

[PATCH] drivers/scsi/ipr.c: reorder error handling code to include iounmap

[Julia Lawall]

From: Julia Lawall <julia@diku.dk>

The out_msi_disable label should be before cleanup_nomem to additionally
benefit from the call to iounmap.  Subsequent gotos are adjusted to go to
out_msi_disable instead of cleanup_nomem, which now follows it.  This is
safe because pci_disable_msi does nothing if pci_enable_msi was not called.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r@
expression e1,e2;
statement S;
@@

e1 = pci_ioremap_bar(...);
... when != e1 = e2
    when != iounmap(e1)
    when any
(
 if (<+...e1...+>) S
|
 if(...) { ... return 0; }
|
 if (...) { ... when != iounmap(e1)
                when != if (...) { ... iounmap(e1) ... }
* return ...;
 } else S
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
 drivers/scsi/ipr.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 888086c..8d63630 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -8778,14 +8778,14 @@ static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
 	if (rc != PCIBIOS_SUCCESSFUL) {
 		dev_err(&pdev->dev, "Failed to save PCI config space\n");
 		rc = -EIO;
-		goto cleanup_nomem;
+		goto out_msi_disable;
 	}
 
 	if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
-		goto cleanup_nomem;
+		goto out_msi_disable;
 
 	if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
-		goto cleanup_nomem;
+		goto out_msi_disable;
 
 	if (ioa_cfg->sis64)
 		ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
@@ -8800,7 +8800,7 @@ static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
 	if (rc < 0) {
 		dev_err(&pdev->dev,
 			"Couldn't allocate enough memory for device driver!\n");
-		goto cleanup_nomem;
+		goto out_msi_disable;
 	}
 
 	/*
@@ -8845,10 +8845,10 @@ out:
 
 cleanup_nolog:
 	ipr_free_mem(ioa_cfg);
-cleanup_nomem:
-	iounmap(ipr_regs);
 out_msi_disable:
 	pci_disable_msi(pdev);
+cleanup_nomem:
+	iounmap(ipr_regs);
 out_release_regions:
 	pci_release_regions(pdev);
 out_scsi_host_put:

[PATCH] drivers/scsi/ipr.c: reorder error handling code to include iounmap

[Julia Lawall]

From: Julia Lawall <julia@diku.dk>

The out_msi_disable label should be before cleanup_nomem to additionally
benefit from the call to iounmap.  Subsequent gotos are adjusted to go to
out_msi_disable instead of cleanup_nomem, which now follows it.  This is
safe because pci_disable_msi does nothing if pci_enable_msi was not called.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r@
expression e1,e2;
statement S;
@@

e1 = pci_ioremap_bar(...);
... when != e1 = e2
    when != iounmap(e1)
    when any
(
 if (<+...e1...+>) S
|
 if(...) { ... return 0; }
|
 if (...) { ... when != iounmap(e1)
                when != if (...) { ... iounmap(e1) ... }
* return ...;
 } else S
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
 drivers/scsi/ipr.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 888086c..8d63630 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -8778,14 +8778,14 @@ static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
 	if (rc != PCIBIOS_SUCCESSFUL) {
 		dev_err(&pdev->dev, "Failed to save PCI config space\n");
 		rc = -EIO;
-		goto cleanup_nomem;
+		goto out_msi_disable;
 	}
 
 	if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
-		goto cleanup_nomem;
+		goto out_msi_disable;
 
 	if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
-		goto cleanup_nomem;
+		goto out_msi_disable;
 
 	if (ioa_cfg->sis64)
 		ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
@@ -8800,7 +8800,7 @@ static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
 	if (rc < 0) {
 		dev_err(&pdev->dev,
 			"Couldn't allocate enough memory for device driver!\n");
-		goto cleanup_nomem;
+		goto out_msi_disable;
 	}
 
 	/*
@@ -8845,10 +8845,10 @@ out:
 
 cleanup_nolog:
 	ipr_free_mem(ioa_cfg);
-cleanup_nomem:
-	iounmap(ipr_regs);
 out_msi_disable:
 	pci_disable_msi(pdev);
+cleanup_nomem:
+	iounmap(ipr_regs);
 out_release_regions:
 	pci_release_regions(pdev);
 out_scsi_host_put:

Re: [PATCH] drivers/scsi/ipr.c: reorder error handling code to include iounmap

[Brian King]

Acked-by: Brian King <brking@linux.vnet.ibm.com>

-- 
Brian King
Linux on Power Virtualization
IBM Linux Technology Center

Re: [PATCH] drivers/scsi/ipr.c: reorder error handling code to include

[Brian King]

Acked-by: Brian King <brking@linux.vnet.ibm.com>

-- 
Brian King
Linux on Power Virtualization
IBM Linux Technology Center

Re: [PATCH] drivers/scsi/ipr.c: reorder error handling code to include iounmap

[Wayne Boyer]

On 05/31/2011 07:16 AM, Julia Lawall wrote:
> From: Julia Lawall <julia@diku.dk>
> 
> The out_msi_disable label should be before cleanup_nomem to additionally
> benefit from the call to iounmap.

Yes, this is a problem.  I propose the following patch instead.

---

In the case where ipr_test_msi returns an error that is not -EOPNOTSUPP, the
execution jumps to the out_msi_disable label.  This misses the call to iounmap
for ipr_regs which was initialized earlier.

The fix is to do the call to pci_disable_msi when the error case is detected
and then goto the cleanup_nomem label if the error is not -EOPNOTSUPP.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
---

 drivers/scsi/ipr.c |   10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

Index: b/drivers/scsi/ipr.c
===================================================================
--- a/drivers/scsi/ipr.c        2011-06-09 08:14:44.927740117 -0700
+++ b/drivers/scsi/ipr.c        2011-06-09 08:50:10.105630466 -0700
@@ -8763,11 +8763,11 @@ static int __devinit ipr_probe_ioa(struc
        /* Enable MSI style interrupts if they are supported. */
        if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) {
                rc = ipr_test_msi(ioa_cfg, pdev);
-               if (rc == -EOPNOTSUPP)
+               if (rc) {
                        pci_disable_msi(pdev);
-               else if (rc)
-                       goto out_msi_disable;
-               else
+                       if (rc != -EOPNOTSUPP)
+                               goto cleanup_nomem;
+               } else
                        dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
        } else if (ipr_debug)
                dev_info(&pdev->dev, "Cannot enable MSI.\n");
@@ -8847,8 +8847,6 @@ cleanup_nolog:
        ipr_free_mem(ioa_cfg);
 cleanup_nomem:
        iounmap(ipr_regs);
-out_msi_disable:
-       pci_disable_msi(pdev);
 out_release_regions:
        pci_release_regions(pdev);
 out_scsi_host_put:


-- 
Wayne Boyer
IBM - Beaverton, Oregon
LTC S/W Development
(503) 578-5236, T/L 775-5236

Re: [PATCH] drivers/scsi/ipr.c: reorder error handling code to include

[Wayne Boyer]

On 05/31/2011 07:16 AM, Julia Lawall wrote:
> From: Julia Lawall <julia@diku.dk>
> 
> The out_msi_disable label should be before cleanup_nomem to additionally
> benefit from the call to iounmap.

Yes, this is a problem.  I propose the following patch instead.

---

In the case where ipr_test_msi returns an error that is not -EOPNOTSUPP, the
execution jumps to the out_msi_disable label.  This misses the call to iounmap
for ipr_regs which was initialized earlier.

The fix is to do the call to pci_disable_msi when the error case is detected
and then goto the cleanup_nomem label if the error is not -EOPNOTSUPP.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
---

 drivers/scsi/ipr.c |   10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

Index: b/drivers/scsi/ipr.c
=================================--- a/drivers/scsi/ipr.c        2011-06-09 08:14:44.927740117 -0700
+++ b/drivers/scsi/ipr.c        2011-06-09 08:50:10.105630466 -0700
@@ -8763,11 +8763,11 @@ static int __devinit ipr_probe_ioa(struc
        /* Enable MSI style interrupts if they are supported. */
        if (ioa_cfg->ipr_chip->intr_type = IPR_USE_MSI && !pci_enable_msi(pdev)) {
                rc = ipr_test_msi(ioa_cfg, pdev);
-               if (rc = -EOPNOTSUPP)
+               if (rc) {
                        pci_disable_msi(pdev);
-               else if (rc)
-                       goto out_msi_disable;
-               else
+                       if (rc != -EOPNOTSUPP)
+                               goto cleanup_nomem;
+               } else
                        dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
        } else if (ipr_debug)
                dev_info(&pdev->dev, "Cannot enable MSI.\n");
@@ -8847,8 +8847,6 @@ cleanup_nolog:
        ipr_free_mem(ioa_cfg);
 cleanup_nomem:
        iounmap(ipr_regs);
-out_msi_disable:
-       pci_disable_msi(pdev);
 out_release_regions:
        pci_release_regions(pdev);
 out_scsi_host_put:


-- 
Wayne Boyer
IBM - Beaverton, Oregon
LTC S/W Development
(503) 578-5236, T/L 775-5236

Re: [PATCH] drivers/scsi/ipr.c: reorder error handling code to include iounmap

[Brian King]

On 06/09/2011 10:51 AM, Wayne Boyer wrote:
> On 05/31/2011 07:16 AM, Julia Lawall wrote:
>> From: Julia Lawall <julia@diku.dk>
>>
>> The out_msi_disable label should be before cleanup_nomem to additionally
>> benefit from the call to iounmap.
> 
> Yes, this is a problem.  I propose the following patch instead.

By removing the out_msi_disable label, if you fail initialization later
on and goto cleanup_nomem, you will end up leaving MSI enabled when you exit
with this patch.

-Brian



> 
> ---
> 
> In the case where ipr_test_msi returns an error that is not -EOPNOTSUPP, the
> execution jumps to the out_msi_disable label.  This misses the call to iounmap
> for ipr_regs which was initialized earlier.
> 
> The fix is to do the call to pci_disable_msi when the error case is detected
> and then goto the cleanup_nomem label if the error is not -EOPNOTSUPP.
> 
> Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
> ---
> 
>  drivers/scsi/ipr.c |   10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
> 
> Index: b/drivers/scsi/ipr.c
> ===================================================================
> --- a/drivers/scsi/ipr.c        2011-06-09 08:14:44.927740117 -0700
> +++ b/drivers/scsi/ipr.c        2011-06-09 08:50:10.105630466 -0700
> @@ -8763,11 +8763,11 @@ static int __devinit ipr_probe_ioa(struc
>         /* Enable MSI style interrupts if they are supported. */
>         if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) {
>                 rc = ipr_test_msi(ioa_cfg, pdev);
> -               if (rc == -EOPNOTSUPP)
> +               if (rc) {
>                         pci_disable_msi(pdev);
> -               else if (rc)
> -                       goto out_msi_disable;
> -               else
> +                       if (rc != -EOPNOTSUPP)
> +                               goto cleanup_nomem;
> +               } else
>                         dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
>         } else if (ipr_debug)
>                 dev_info(&pdev->dev, "Cannot enable MSI.\n");
> @@ -8847,8 +8847,6 @@ cleanup_nolog:
>         ipr_free_mem(ioa_cfg);
>  cleanup_nomem:
>         iounmap(ipr_regs);
> -out_msi_disable:
> -       pci_disable_msi(pdev);
>  out_release_regions:
>         pci_release_regions(pdev);
>  out_scsi_host_put:
> 
> 


-- 
Brian King
Linux on Power Virtualization
IBM Linux Technology Center

Re: [PATCH] drivers/scsi/ipr.c: reorder error handling code to include

[Brian King]

On 06/09/2011 10:51 AM, Wayne Boyer wrote:
> On 05/31/2011 07:16 AM, Julia Lawall wrote:
>> From: Julia Lawall <julia@diku.dk>
>>
>> The out_msi_disable label should be before cleanup_nomem to additionally
>> benefit from the call to iounmap.
> 
> Yes, this is a problem.  I propose the following patch instead.

By removing the out_msi_disable label, if you fail initialization later
on and goto cleanup_nomem, you will end up leaving MSI enabled when you exit
with this patch.

-Brian



> 
> ---
> 
> In the case where ipr_test_msi returns an error that is not -EOPNOTSUPP, the
> execution jumps to the out_msi_disable label.  This misses the call to iounmap
> for ipr_regs which was initialized earlier.
> 
> The fix is to do the call to pci_disable_msi when the error case is detected
> and then goto the cleanup_nomem label if the error is not -EOPNOTSUPP.
> 
> Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
> ---
> 
>  drivers/scsi/ipr.c |   10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
> 
> Index: b/drivers/scsi/ipr.c
> =================================> --- a/drivers/scsi/ipr.c        2011-06-09 08:14:44.927740117 -0700
> +++ b/drivers/scsi/ipr.c        2011-06-09 08:50:10.105630466 -0700
> @@ -8763,11 +8763,11 @@ static int __devinit ipr_probe_ioa(struc
>         /* Enable MSI style interrupts if they are supported. */
>         if (ioa_cfg->ipr_chip->intr_type = IPR_USE_MSI && !pci_enable_msi(pdev)) {
>                 rc = ipr_test_msi(ioa_cfg, pdev);
> -               if (rc = -EOPNOTSUPP)
> +               if (rc) {
>                         pci_disable_msi(pdev);
> -               else if (rc)
> -                       goto out_msi_disable;
> -               else
> +                       if (rc != -EOPNOTSUPP)
> +                               goto cleanup_nomem;
> +               } else
>                         dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
>         } else if (ipr_debug)
>                 dev_info(&pdev->dev, "Cannot enable MSI.\n");
> @@ -8847,8 +8847,6 @@ cleanup_nolog:
>         ipr_free_mem(ioa_cfg);
>  cleanup_nomem:
>         iounmap(ipr_regs);
> -out_msi_disable:
> -       pci_disable_msi(pdev);
>  out_release_regions:
>         pci_release_regions(pdev);
>  out_scsi_host_put:
> 
> 


-- 
Brian King
Linux on Power Virtualization
IBM Linux Technology Center

Re: [PATCH] drivers/scsi/ipr.c: reorder error handling code to include iounmap

[Julia Lawall]

On Tue, 14 Jun 2011, Brian King wrote:

> On 06/09/2011 10:51 AM, Wayne Boyer wrote:
> > On 05/31/2011 07:16 AM, Julia Lawall wrote:
> >> From: Julia Lawall <julia@diku.dk>
> >>
> >> The out_msi_disable label should be before cleanup_nomem to additionally
> >> benefit from the call to iounmap.
> > 
> > Yes, this is a problem.  I propose the following patch instead.
> 
> By removing the out_msi_disable label, if you fail initialization later
> on and goto cleanup_nomem, you will end up leaving MSI enabled when you exit
> with this patch.

I agree.

julia

> -Brian
> 
> 
> 
> > 
> > ---
> > 
> > In the case where ipr_test_msi returns an error that is not -EOPNOTSUPP, the
> > execution jumps to the out_msi_disable label.  This misses the call to iounmap
> > for ipr_regs which was initialized earlier.
> > 
> > The fix is to do the call to pci_disable_msi when the error case is detected
> > and then goto the cleanup_nomem label if the error is not -EOPNOTSUPP.
> > 
> > Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
> > ---
> > 
> >  drivers/scsi/ipr.c |   10 ++++------
> >  1 file changed, 4 insertions(+), 6 deletions(-)
> > 
> > Index: b/drivers/scsi/ipr.c
> > ===================================================================
> > --- a/drivers/scsi/ipr.c        2011-06-09 08:14:44.927740117 -0700
> > +++ b/drivers/scsi/ipr.c        2011-06-09 08:50:10.105630466 -0700
> > @@ -8763,11 +8763,11 @@ static int __devinit ipr_probe_ioa(struc
> >         /* Enable MSI style interrupts if they are supported. */
> >         if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) {
> >                 rc = ipr_test_msi(ioa_cfg, pdev);
> > -               if (rc == -EOPNOTSUPP)
> > +               if (rc) {
> >                         pci_disable_msi(pdev);
> > -               else if (rc)
> > -                       goto out_msi_disable;
> > -               else
> > +                       if (rc != -EOPNOTSUPP)
> > +                               goto cleanup_nomem;
> > +               } else
> >                         dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
> >         } else if (ipr_debug)
> >                 dev_info(&pdev->dev, "Cannot enable MSI.\n");
> > @@ -8847,8 +8847,6 @@ cleanup_nolog:
> >         ipr_free_mem(ioa_cfg);
> >  cleanup_nomem:
> >         iounmap(ipr_regs);
> > -out_msi_disable:
> > -       pci_disable_msi(pdev);
> >  out_release_regions:
> >         pci_release_regions(pdev);
> >  out_scsi_host_put:
> > 
> > 
> 
> 
> -- 
> Brian King
> Linux on Power Virtualization
> IBM Linux Technology Center
> 
> 
> --
> To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

Re: [PATCH] drivers/scsi/ipr.c: reorder error handling code to

[Julia Lawall]

On Tue, 14 Jun 2011, Brian King wrote:

> On 06/09/2011 10:51 AM, Wayne Boyer wrote:
> > On 05/31/2011 07:16 AM, Julia Lawall wrote:
> >> From: Julia Lawall <julia@diku.dk>
> >>
> >> The out_msi_disable label should be before cleanup_nomem to additionally
> >> benefit from the call to iounmap.
> > 
> > Yes, this is a problem.  I propose the following patch instead.
> 
> By removing the out_msi_disable label, if you fail initialization later
> on and goto cleanup_nomem, you will end up leaving MSI enabled when you exit
> with this patch.

I agree.

julia

> -Brian
> 
> 
> 
> > 
> > ---
> > 
> > In the case where ipr_test_msi returns an error that is not -EOPNOTSUPP, the
> > execution jumps to the out_msi_disable label.  This misses the call to iounmap
> > for ipr_regs which was initialized earlier.
> > 
> > The fix is to do the call to pci_disable_msi when the error case is detected
> > and then goto the cleanup_nomem label if the error is not -EOPNOTSUPP.
> > 
> > Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
> > ---
> > 
> >  drivers/scsi/ipr.c |   10 ++++------
> >  1 file changed, 4 insertions(+), 6 deletions(-)
> > 
> > Index: b/drivers/scsi/ipr.c
> > =================================> > --- a/drivers/scsi/ipr.c        2011-06-09 08:14:44.927740117 -0700
> > +++ b/drivers/scsi/ipr.c        2011-06-09 08:50:10.105630466 -0700
> > @@ -8763,11 +8763,11 @@ static int __devinit ipr_probe_ioa(struc
> >         /* Enable MSI style interrupts if they are supported. */
> >         if (ioa_cfg->ipr_chip->intr_type = IPR_USE_MSI && !pci_enable_msi(pdev)) {
> >                 rc = ipr_test_msi(ioa_cfg, pdev);
> > -               if (rc = -EOPNOTSUPP)
> > +               if (rc) {
> >                         pci_disable_msi(pdev);
> > -               else if (rc)
> > -                       goto out_msi_disable;
> > -               else
> > +                       if (rc != -EOPNOTSUPP)
> > +                               goto cleanup_nomem;
> > +               } else
> >                         dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
> >         } else if (ipr_debug)
> >                 dev_info(&pdev->dev, "Cannot enable MSI.\n");
> > @@ -8847,8 +8847,6 @@ cleanup_nolog:
> >         ipr_free_mem(ioa_cfg);
> >  cleanup_nomem:
> >         iounmap(ipr_regs);
> > -out_msi_disable:
> > -       pci_disable_msi(pdev);
> >  out_release_regions:
> >         pci_release_regions(pdev);
> >  out_scsi_host_put:
> > 
> > 
> 
> 
> -- 
> Brian King
> Linux on Power Virtualization
> IBM Linux Technology Center
> 
> 
> --
> To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

Re: [PATCH] drivers/scsi/ipr.c: reorder error handling code to include iounmap

[Wayne Boyer]

On 06/15/2011 01:50 AM, Julia Lawall wrote:
> On Tue, 14 Jun 2011, Brian King wrote:
> 
>> On 06/09/2011 10:51 AM, Wayne Boyer wrote:
>>> On 05/31/2011 07:16 AM, Julia Lawall wrote:
>>>> From: Julia Lawall <julia@diku.dk>
>>>>
>>>> The out_msi_disable label should be before cleanup_nomem to additionally
>>>> benefit from the call to iounmap.
>>>
>>> Yes, this is a problem.  I propose the following patch instead.
>>
>> By removing the out_msi_disable label, if you fail initialization later
>> on and goto cleanup_nomem, you will end up leaving MSI enabled when you exit
>> with this patch.
> 
> I agree.
> 
> julia
> 

I also agree.  Please disregard my patch.

-- 
Wayne Boyer
IBM - Beaverton, Oregon
LTC S/W Development
(503) 578-5236, T/L 775-5236

Re: [PATCH] drivers/scsi/ipr.c: reorder error handling code to include

[Wayne Boyer]

On 06/15/2011 01:50 AM, Julia Lawall wrote:
> On Tue, 14 Jun 2011, Brian King wrote:
> 
>> On 06/09/2011 10:51 AM, Wayne Boyer wrote:
>>> On 05/31/2011 07:16 AM, Julia Lawall wrote:
>>>> From: Julia Lawall <julia@diku.dk>
>>>>
>>>> The out_msi_disable label should be before cleanup_nomem to additionally
>>>> benefit from the call to iounmap.
>>>
>>> Yes, this is a problem.  I propose the following patch instead.
>>
>> By removing the out_msi_disable label, if you fail initialization later
>> on and goto cleanup_nomem, you will end up leaving MSI enabled when you exit
>> with this patch.
> 
> I agree.
> 
> julia
> 

I also agree.  Please disregard my patch.

-- 
Wayne Boyer
IBM - Beaverton, Oregon
LTC S/W Development
(503) 578-5236, T/L 775-5236