* [patch] ACPI / CPPC: set an error code on probe error path
@ 2016-11-30 19:22 Dan Carpenter
2016-11-30 21:53 ` Rafael J. Wysocki
0 siblings, 1 reply; 6+ messages in thread
From: Dan Carpenter @ 2016-11-30 19:22 UTC (permalink / raw)
To: Rafael J. Wysocki, Ashwin Chaugule; +Cc: Len Brown, linux-acpi, kernel-janitors
We should return -EINVAL if get_cpu_device() fails.
Fixes: 158c998ea44b ("ACPI / CPPC: add sysfs support to compute delivered performance")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index d0d0504..e0ea8f5 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -784,8 +784,10 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
/* Add per logical CPU nodes for reading its feedback counters. */
cpu_dev = get_cpu_device(pr->id);
- if (!cpu_dev)
+ if (!cpu_dev) {
+ ret = -EINVAL;
goto out_free;
+ }
ret = kobject_init_and_add(&cpc_ptr->kobj, &cppc_ktype, &cpu_dev->kobj,
"acpi_cppc");
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [patch] ACPI / CPPC: set an error code on probe error path
2016-11-30 19:22 [patch] ACPI / CPPC: set an error code on probe error path Dan Carpenter
@ 2016-11-30 21:53 ` Rafael J. Wysocki
2016-11-30 21:55 ` Rafael J. Wysocki
2016-11-30 22:03 ` Dan Carpenter
0 siblings, 2 replies; 6+ messages in thread
From: Rafael J. Wysocki @ 2016-11-30 21:53 UTC (permalink / raw)
To: Dan Carpenter
Cc: Rafael J. Wysocki, Ashwin Chaugule, Len Brown,
ACPI Devel Maling List, kernel-janitors
On Wed, Nov 30, 2016 at 8:22 PM, Dan Carpenter <dan.carpenter@oracle.com> wrote:
> We should return -EINVAL if get_cpu_device() fails.
>
> Fixes: 158c998ea44b ("ACPI / CPPC: add sysfs support to compute delivered performance")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
>
> diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
> index d0d0504..e0ea8f5 100644
> --- a/drivers/acpi/cppc_acpi.c
> +++ b/drivers/acpi/cppc_acpi.c
> @@ -784,8 +784,10 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
>
> /* Add per logical CPU nodes for reading its feedback counters. */
> cpu_dev = get_cpu_device(pr->id);
> - if (!cpu_dev)
> + if (!cpu_dev) {
> + ret = -EINVAL;
ret is initialized here AFAICS.
Do you that its value is not the right one?
> goto out_free;
> + }
>
> ret = kobject_init_and_add(&cpc_ptr->kobj, &cppc_ktype, &cpu_dev->kobj,
> "acpi_cppc");
> --
Thanks,
Rafael
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [patch] ACPI / CPPC: set an error code on probe error path
2016-11-30 21:53 ` Rafael J. Wysocki
@ 2016-11-30 21:55 ` Rafael J. Wysocki
2016-11-30 22:03 ` Dan Carpenter
1 sibling, 0 replies; 6+ messages in thread
From: Rafael J. Wysocki @ 2016-11-30 21:55 UTC (permalink / raw)
To: Rafael J. Wysocki
Cc: Dan Carpenter, Rafael J. Wysocki, Len Brown,
ACPI Devel Maling List, kernel-janitors
On Wed, Nov 30, 2016 at 10:53 PM, Rafael J. Wysocki <rafael@kernel.org> wrote:
> On Wed, Nov 30, 2016 at 8:22 PM, Dan Carpenter <dan.carpenter@oracle.com> wrote:
>> We should return -EINVAL if get_cpu_device() fails.
>>
>> Fixes: 158c998ea44b ("ACPI / CPPC: add sysfs support to compute delivered performance")
>> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
>>
>> diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
>> index d0d0504..e0ea8f5 100644
>> --- a/drivers/acpi/cppc_acpi.c
>> +++ b/drivers/acpi/cppc_acpi.c
>> @@ -784,8 +784,10 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
>>
>> /* Add per logical CPU nodes for reading its feedback counters. */
>> cpu_dev = get_cpu_device(pr->id);
>> - if (!cpu_dev)
>> + if (!cpu_dev) {
>> + ret = -EINVAL;
>
> ret is initialized here AFAICS.
>
> Do you that its value is not the right one?
This was supposed to be "Do you mean that ...", sorry.
>
>> goto out_free;
>> + }
>>
>> ret = kobject_init_and_add(&cpc_ptr->kobj, &cppc_ktype, &cpu_dev->kobj,
>> "acpi_cppc");
>> --
Thanks,
Rafael
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [patch] ACPI / CPPC: set an error code on probe error path
2016-11-30 21:53 ` Rafael J. Wysocki
2016-11-30 21:55 ` Rafael J. Wysocki
@ 2016-11-30 22:03 ` Dan Carpenter
2016-11-30 22:14 ` Rafael J. Wysocki
1 sibling, 1 reply; 6+ messages in thread
From: Dan Carpenter @ 2016-11-30 22:03 UTC (permalink / raw)
To: Rafael J. Wysocki
Cc: Rafael J. Wysocki, Ashwin Chaugule, Len Brown,
ACPI Devel Maling List, kernel-janitors
On Wed, Nov 30, 2016 at 10:53:55PM +0100, Rafael J. Wysocki wrote:
> On Wed, Nov 30, 2016 at 8:22 PM, Dan Carpenter <dan.carpenter@oracle.com> wrote:
> > We should return -EINVAL if get_cpu_device() fails.
> >
> > Fixes: 158c998ea44b ("ACPI / CPPC: add sysfs support to compute delivered performance")
> > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> >
> > diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
> > index d0d0504..e0ea8f5 100644
> > --- a/drivers/acpi/cppc_acpi.c
> > +++ b/drivers/acpi/cppc_acpi.c
> > @@ -784,8 +784,10 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
> >
> > /* Add per logical CPU nodes for reading its feedback counters. */
> > cpu_dev = get_cpu_device(pr->id);
> > - if (!cpu_dev)
> > + if (!cpu_dev) {
> > + ret = -EINVAL;
>
> ret is initialized here AFAICS.
>
> Do you that its value is not the right one?
I'm looking at linux-next. It's set to zero but we presumably want to
return an error code.
regards,
dan carpenter
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [patch] ACPI / CPPC: set an error code on probe error path
2016-11-30 22:03 ` Dan Carpenter
@ 2016-11-30 22:14 ` Rafael J. Wysocki
2016-12-01 14:14 ` Rafael J. Wysocki
0 siblings, 1 reply; 6+ messages in thread
From: Rafael J. Wysocki @ 2016-11-30 22:14 UTC (permalink / raw)
To: Dan Carpenter
Cc: Rafael J. Wysocki, Rafael J. Wysocki, Ashwin Chaugule, Len Brown,
ACPI Devel Maling List, kernel-janitors
On Wed, Nov 30, 2016 at 11:03 PM, Dan Carpenter
<dan.carpenter@oracle.com> wrote:
> On Wed, Nov 30, 2016 at 10:53:55PM +0100, Rafael J. Wysocki wrote:
>> On Wed, Nov 30, 2016 at 8:22 PM, Dan Carpenter <dan.carpenter@oracle.com> wrote:
>> > We should return -EINVAL if get_cpu_device() fails.
>> >
>> > Fixes: 158c998ea44b ("ACPI / CPPC: add sysfs support to compute delivered performance")
>> > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
>> >
>> > diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
>> > index d0d0504..e0ea8f5 100644
>> > --- a/drivers/acpi/cppc_acpi.c
>> > +++ b/drivers/acpi/cppc_acpi.c
>> > @@ -784,8 +784,10 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
>> >
>> > /* Add per logical CPU nodes for reading its feedback counters. */
>> > cpu_dev = get_cpu_device(pr->id);
>> > - if (!cpu_dev)
>> > + if (!cpu_dev) {
>> > + ret = -EINVAL;
>>
>> ret is initialized here AFAICS.
>>
>> Do you that its value is not the right one?
>
> I'm looking at linux-next. It's set to zero but we presumably want to
> return an error code.
OK
It was slightly unclear what the bug was.
Thanks,
Rafael
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [patch] ACPI / CPPC: set an error code on probe error path
2016-11-30 22:14 ` Rafael J. Wysocki
@ 2016-12-01 14:14 ` Rafael J. Wysocki
0 siblings, 0 replies; 6+ messages in thread
From: Rafael J. Wysocki @ 2016-12-01 14:14 UTC (permalink / raw)
To: Rafael J. Wysocki
Cc: Dan Carpenter, Ashwin Chaugule, Len Brown, ACPI Devel Maling List,
kernel-janitors
On Wednesday, November 30, 2016 11:14:23 PM Rafael J. Wysocki wrote:
> On Wed, Nov 30, 2016 at 11:03 PM, Dan Carpenter
> <dan.carpenter@oracle.com> wrote:
> > On Wed, Nov 30, 2016 at 10:53:55PM +0100, Rafael J. Wysocki wrote:
> >> On Wed, Nov 30, 2016 at 8:22 PM, Dan Carpenter <dan.carpenter@oracle.com> wrote:
> >> > We should return -EINVAL if get_cpu_device() fails.
> >> >
> >> > Fixes: 158c998ea44b ("ACPI / CPPC: add sysfs support to compute delivered performance")
> >> > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> >> >
> >> > diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
> >> > index d0d0504..e0ea8f5 100644
> >> > --- a/drivers/acpi/cppc_acpi.c
> >> > +++ b/drivers/acpi/cppc_acpi.c
> >> > @@ -784,8 +784,10 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
> >> >
> >> > /* Add per logical CPU nodes for reading its feedback counters. */
> >> > cpu_dev = get_cpu_device(pr->id);
> >> > - if (!cpu_dev)
> >> > + if (!cpu_dev) {
> >> > + ret = -EINVAL;
> >>
> >> ret is initialized here AFAICS.
> >>
> >> Do you that its value is not the right one?
> >
> > I'm looking at linux-next. It's set to zero but we presumably want to
> > return an error code.
>
> OK
>
> It was slightly unclear what the bug was.
Applied now.
Thanks,
Rafael
^ permalink raw reply [flat|nested] 6+ messages in thread
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2016-11-30 19:22 [patch] ACPI / CPPC: set an error code on probe error path Dan Carpenter
2016-11-30 21:53 ` Rafael J. Wysocki
2016-11-30 21:55 ` Rafael J. Wysocki
2016-11-30 22:03 ` Dan Carpenter
2016-11-30 22:14 ` Rafael J. Wysocki
2016-12-01 14:14 ` Rafael J. Wysocki
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