* [PATCH] PNPACPI: check return value of pnpacpi_parse_allocated_resource() and pnpacpi_parse_resource_option_data()
@ 2014-07-22 19:13 Arjun Sreedharan
2014-07-22 22:12 ` Rafael J. Wysocki
0 siblings, 1 reply; 5+ messages in thread
From: Arjun Sreedharan @ 2014-07-22 19:13 UTC (permalink / raw)
To: rjw; +Cc: lenb, linux-acpi, linux-kernel
Handle error condition since pnpacpi_parse_allocated_resource() and pnpacpi_parse_resource_option_data() could return -EPERM.
Signed-off-by: Arjun Sreedharan <arjun024@gmail.com>
---
drivers/pnp/pnpacpi/core.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index b81448b..c3214e9 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -272,10 +272,14 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
strncpy(dev->name, acpi_device_bid(device), sizeof(dev->name));
if (dev->active)
- pnpacpi_parse_allocated_resource(dev);
+ error = pnpacpi_parse_allocated_resource(dev);
+ if (error)
+ return error;
if (dev->capabilities & PNP_CONFIGURABLE)
- pnpacpi_parse_resource_option_data(dev);
+ error = pnpacpi_parse_resource_option_data(dev);
+ if (error)
+ return error;
list_for_each_entry(id, &device->pnp.ids, list) {
if (!strcmp(id->id, pnpid))
--
1.7.11.7
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH] PNPACPI: check return value of pnpacpi_parse_allocated_resource() and pnpacpi_parse_resource_option_data()
2014-07-22 19:13 [PATCH] PNPACPI: check return value of pnpacpi_parse_allocated_resource() and pnpacpi_parse_resource_option_data() Arjun Sreedharan
@ 2014-07-22 22:12 ` Rafael J. Wysocki
2014-07-23 8:26 ` Arjun
0 siblings, 1 reply; 5+ messages in thread
From: Rafael J. Wysocki @ 2014-07-22 22:12 UTC (permalink / raw)
To: Arjun Sreedharan; +Cc: lenb, linux-acpi, linux-kernel
On Wednesday, July 23, 2014 12:43:39 AM Arjun Sreedharan wrote:
> Handle error condition since pnpacpi_parse_allocated_resource() and pnpacpi_parse_resource_option_data() could return -EPERM.
>
> Signed-off-by: Arjun Sreedharan <arjun024@gmail.com>
I wonder if this fixes any functional issue you've seen or someone has
reported to you or it's just an "Oh, we probably should handle the return
values here" kind of thing?
> ---
> drivers/pnp/pnpacpi/core.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
> index b81448b..c3214e9 100644
> --- a/drivers/pnp/pnpacpi/core.c
> +++ b/drivers/pnp/pnpacpi/core.c
> @@ -272,10 +272,14 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
> strncpy(dev->name, acpi_device_bid(device), sizeof(dev->name));
>
> if (dev->active)
> - pnpacpi_parse_allocated_resource(dev);
> + error = pnpacpi_parse_allocated_resource(dev);
> + if (error)
> + return error;
>
> if (dev->capabilities & PNP_CONFIGURABLE)
> - pnpacpi_parse_resource_option_data(dev);
> + error = pnpacpi_parse_resource_option_data(dev);
> + if (error)
> + return error;
>
> list_for_each_entry(id, &device->pnp.ids, list) {
> if (!strcmp(id->id, pnpid))
>
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] PNPACPI: check return value of pnpacpi_parse_allocated_resource() and pnpacpi_parse_resource_option_data()
2014-07-22 22:12 ` Rafael J. Wysocki
@ 2014-07-23 8:26 ` Arjun
2014-07-23 11:36 ` Rafael J. Wysocki
0 siblings, 1 reply; 5+ messages in thread
From: Arjun @ 2014-07-23 8:26 UTC (permalink / raw)
To: Rafael J. Wysocki; +Cc: Len Brown, linux-acpi, linux-kernel
ACPI 5.0 resource types like FixedDMA will fail pnpacpi_allocated_resource().
pnpacpi_add_device() has to return error in that case.
On 23 July 2014 03:42, Rafael J. Wysocki <rjw@rjwysocki.net> wrote:
> On Wednesday, July 23, 2014 12:43:39 AM Arjun Sreedharan wrote:
>> Handle error condition since pnpacpi_parse_allocated_resource() and pnpacpi_parse_resource_option_data() could return -EPERM.
>>
>> Signed-off-by: Arjun Sreedharan <arjun024@gmail.com>
>
> I wonder if this fixes any functional issue you've seen or someone has
> reported to you or it's just an "Oh, we probably should handle the return
> values here" kind of thing?
>
>> ---
>> drivers/pnp/pnpacpi/core.c | 8 ++++++--
>> 1 file changed, 6 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
>> index b81448b..c3214e9 100644
>> --- a/drivers/pnp/pnpacpi/core.c
>> +++ b/drivers/pnp/pnpacpi/core.c
>> @@ -272,10 +272,14 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
>> strncpy(dev->name, acpi_device_bid(device), sizeof(dev->name));
>>
>> if (dev->active)
>> - pnpacpi_parse_allocated_resource(dev);
>> + error = pnpacpi_parse_allocated_resource(dev);
>> + if (error)
>> + return error;
>>
>> if (dev->capabilities & PNP_CONFIGURABLE)
>> - pnpacpi_parse_resource_option_data(dev);
>> + error = pnpacpi_parse_resource_option_data(dev);
>> + if (error)
>> + return error;
>>
>> list_for_each_entry(id, &device->pnp.ids, list) {
>> if (!strcmp(id->id, pnpid))
>>
>
> --
> I speak only for myself.
> Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] PNPACPI: check return value of pnpacpi_parse_allocated_resource() and pnpacpi_parse_resource_option_data()
2014-07-23 8:26 ` Arjun
@ 2014-07-23 11:36 ` Rafael J. Wysocki
2014-07-23 19:49 ` Arjun Sreedharan
0 siblings, 1 reply; 5+ messages in thread
From: Rafael J. Wysocki @ 2014-07-23 11:36 UTC (permalink / raw)
To: Arjun; +Cc: Len Brown, linux-acpi, linux-kernel
On Wednesday, July 23, 2014 01:56:36 PM Arjun wrote:
> ACPI 5.0 resource types like FixedDMA will fail pnpacpi_allocated_resource().
> pnpacpi_add_device() has to return error in that case.
Why?
> On 23 July 2014 03:42, Rafael J. Wysocki <rjw@rjwysocki.net> wrote:
> > On Wednesday, July 23, 2014 12:43:39 AM Arjun Sreedharan wrote:
> >> Handle error condition since pnpacpi_parse_allocated_resource() and pnpacpi_parse_resource_option_data() could return -EPERM.
> >>
> >> Signed-off-by: Arjun Sreedharan <arjun024@gmail.com>
> >
> > I wonder if this fixes any functional issue you've seen or someone has
> > reported to you or it's just an "Oh, we probably should handle the return
> > values here" kind of thing?
> >
> >> ---
> >> drivers/pnp/pnpacpi/core.c | 8 ++++++--
> >> 1 file changed, 6 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
> >> index b81448b..c3214e9 100644
> >> --- a/drivers/pnp/pnpacpi/core.c
> >> +++ b/drivers/pnp/pnpacpi/core.c
> >> @@ -272,10 +272,14 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
> >> strncpy(dev->name, acpi_device_bid(device), sizeof(dev->name));
> >>
> >> if (dev->active)
> >> - pnpacpi_parse_allocated_resource(dev);
> >> + error = pnpacpi_parse_allocated_resource(dev);
> >> + if (error)
> >> + return error;
> >>
> >> if (dev->capabilities & PNP_CONFIGURABLE)
> >> - pnpacpi_parse_resource_option_data(dev);
> >> + error = pnpacpi_parse_resource_option_data(dev);
> >> + if (error)
> >> + return error;
> >>
> >> list_for_each_entry(id, &device->pnp.ids, list) {
> >> if (!strcmp(id->id, pnpid))
> >>
> >
> > --
> > I speak only for myself.
> > Rafael J. Wysocki, Intel Open Source Technology Center.
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] PNPACPI: check return value of pnpacpi_parse_allocated_resource() and pnpacpi_parse_resource_option_data()
2014-07-23 11:36 ` Rafael J. Wysocki
@ 2014-07-23 19:49 ` Arjun Sreedharan
0 siblings, 0 replies; 5+ messages in thread
From: Arjun Sreedharan @ 2014-07-23 19:49 UTC (permalink / raw)
To: Rafael J. Wysocki; +Cc: Len Brown, linux-acpi, linux-kernel
On 23 July 2014 17:06, Rafael J. Wysocki <rjw@rjwysocki.net> wrote:
> On Wednesday, July 23, 2014 01:56:36 PM Arjun wrote:
>> ACPI 5.0 resource types like FixedDMA will fail pnpacpi_allocated_resource().
>> pnpacpi_add_device() has to return error in that case.
>
> Why?
>
OK. I presume that for unsupported types like ACPI_RESOURCE_TYPE_FIXED_DMA
pnpacpi_set_resources() will fail.
>> On 23 July 2014 03:42, Rafael J. Wysocki <rjw@rjwysocki.net> wrote:
>> > On Wednesday, July 23, 2014 12:43:39 AM Arjun Sreedharan wrote:
>> >> Handle error condition since pnpacpi_parse_allocated_resource() and pnpacpi_parse_resource_option_data() could return -EPERM.
>> >>
>> >> Signed-off-by: Arjun Sreedharan <arjun024@gmail.com>
>> >
>> > I wonder if this fixes any functional issue you've seen or someone has
>> > reported to you or it's just an "Oh, we probably should handle the return
>> > values here" kind of thing?
>> >
>> >> ---
>> >> drivers/pnp/pnpacpi/core.c | 8 ++++++--
>> >> 1 file changed, 6 insertions(+), 2 deletions(-)
>> >>
>> >> diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
>> >> index b81448b..c3214e9 100644
>> >> --- a/drivers/pnp/pnpacpi/core.c
>> >> +++ b/drivers/pnp/pnpacpi/core.c
>> >> @@ -272,10 +272,14 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
>> >> strncpy(dev->name, acpi_device_bid(device), sizeof(dev->name));
>> >>
>> >> if (dev->active)
>> >> - pnpacpi_parse_allocated_resource(dev);
>> >> + error = pnpacpi_parse_allocated_resource(dev);
>> >> + if (error)
>> >> + return error;
>> >>
>> >> if (dev->capabilities & PNP_CONFIGURABLE)
>> >> - pnpacpi_parse_resource_option_data(dev);
>> >> + error = pnpacpi_parse_resource_option_data(dev);
>> >> + if (error)
>> >> + return error;
>> >>
>> >> list_for_each_entry(id, &device->pnp.ids, list) {
>> >> if (!strcmp(id->id, pnpid))
>> >>
>> >
>> > --
>> > I speak only for myself.
>> > Rafael J. Wysocki, Intel Open Source Technology Center.
>
> --
> I speak only for myself.
> Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2014-07-23 19:49 UTC | newest]
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2014-07-22 19:13 [PATCH] PNPACPI: check return value of pnpacpi_parse_allocated_resource() and pnpacpi_parse_resource_option_data() Arjun Sreedharan
2014-07-22 22:12 ` Rafael J. Wysocki
2014-07-23 8:26 ` Arjun
2014-07-23 11:36 ` Rafael J. Wysocki
2014-07-23 19:49 ` Arjun Sreedharan
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