2016-10-30 21:35:01

by Christophe JAILLET

[permalink] [raw]
Subject: [PATCH] cxl: Fix error handling

'cxl_dev_context_init()' returns an error pointer in case of error, not
NULL. So test it with IS_ERR.

Signed-off-by: Christophe JAILLET <[email protected]>
---
un-compiled because I don't have the required cross build environment.
---
drivers/misc/cxl/api.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/cxl/api.c b/drivers/misc/cxl/api.c
index 2b88ad8a2a89..e2efc6489c6e 100644
--- a/drivers/misc/cxl/api.c
+++ b/drivers/misc/cxl/api.c
@@ -538,7 +538,7 @@ int _cxl_cx4_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)

if (remaining > 0) {
new_ctx = cxl_dev_context_init(pdev);
- if (!new_ctx) {
+ if (IS_ERR(new_ctx)) {
pr_warn("%s: Failed to allocate enough contexts for MSIs\n", pci_name(pdev));
return -ENOSPC;
}
--
2.9.3


2016-10-31 06:27:19

by Andrew Donnellan

[permalink] [raw]
Subject: Re: [PATCH] cxl: Fix error handling

On 31/10/16 08:34, Christophe JAILLET wrote:
> 'cxl_dev_context_init()' returns an error pointer in case of error, not
> NULL. So test it with IS_ERR.
>
> Signed-off-by: Christophe JAILLET <[email protected]>

Reviewed-by: Andrew Donnellan <[email protected]>

> ---
> un-compiled because I don't have the required cross build environment.

Builds fine here.

In future, you might want to bundle all 3 of your patches either into 1
patch (while they are changes which can be done separately, it's all
fixes to one type of problem in relation to one function, so personally
I'm okay with that) or send it as a series, so that it's clear to
everyone that they're all related fixes.

Additionally, having the same patch subject line for two patches sent in
short succession is a bit confusing - in future, try and avoid that.


Andrew

--
Andrew Donnellan OzLabs, ADL Canberra
[email protected] IBM Australia Limited

2016-10-31 09:50:20

by Michael Ellerman

[permalink] [raw]
Subject: Re: [PATCH] cxl: Fix error handling

Andrew Donnellan <[email protected]> writes:

> On 31/10/16 08:34, Christophe JAILLET wrote:
>> 'cxl_dev_context_init()' returns an error pointer in case of error, not
>> NULL. So test it with IS_ERR.
>>
>> Signed-off-by: Christophe JAILLET <[email protected]>
>
> Reviewed-by: Andrew Donnellan <[email protected]>
>
>> ---
>> un-compiled because I don't have the required cross build environment.
>
> Builds fine here.
>
> In future, you might want to bundle all 3 of your patches either into 1
> patch (while they are changes which can be done separately, it's all
> fixes to one type of problem in relation to one function, so personally
> I'm okay with that) or send it as a series, so that it's clear to
> everyone that they're all related fixes.

> Additionally, having the same patch subject line for two patches sent in
> short succession is a bit confusing - in future, try and avoid that.

Yeah. I actually assumed it was two versions of the same patch.

cheers

2016-11-16 01:54:44

by Ian Munsie

[permalink] [raw]

2016-11-22 00:34:22

by Michael Ellerman

[permalink] [raw]
Subject: Re: cxl: Fix error handling

On Sun, 2016-10-30 at 21:34:51 UTC, Christophe Jaillet wrote:
> 'cxl_dev_context_init()' returns an error pointer in case of error, not
> NULL. So test it with IS_ERR.
>
> Signed-off-by: Christophe JAILLET <[email protected]>
> Reviewed-by: Andrew Donnellan <[email protected]>
> Acked-by: Frederic Barrat <[email protected]>
> Acked-by: Ian Munsie <[email protected]>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/28e323e5a0b21b3665eb6e136ca8bb

cheers