+Carlo
On Wed, Dec 2, 2015 at 10:32 AM, Jonas Gorski <j...@openwrt.org> wrote:
> Hi,
>
> On Wed, Dec 2, 2015 at 5:14 PM, Qais Yousef <qais.you...@imgtec.com> wrote:
>> This reverts commit 52493d446141b07c8ba28dd6a529513f8b2342bd.
>>
>> Signed-off-by: Qais Yousef <qais.you...@imgtec.com>
>>
>> Conflicts:
>> include/linux/of_irq.h
>> ---
>> I have a patch series that is under review that makes use of
>> of_irq_find_parent()
>>
>> The affected patch is this:
>>
>> https://lkml.org/lkml/2015/11/25/291
>>
>> Is it wrong to use this function? If yes, what's the alternative?
>> If no, OK to revert?
>
> Make the revert part of the series that needs it, so it won't get
> moved again because of no external users.
There's 2 cases[1] wanting it, so I'm planning to apply for 4.4 since
we removed it in 4.4.
Reverting is perhaps the wrong thing as it conflicts, also needs an
EXPORT_SYMBOL, and needs to be moved for !OF_IRQ builds as pointed out
below.
>> drivers/of/irq.c | 2 +-
>> include/linux/of_irq.h | 6 ++++++
>> 2 files changed, 7 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/of/irq.c b/drivers/of/irq.c
>> index 902b89be7217..45735d56e435 100644
>> --- a/drivers/of/irq.c
>> +++ b/drivers/of/irq.c
>> @@ -53,7 +53,7 @@ EXPORT_SYMBOL_GPL(irq_of_parse_and_map);
>> * Returns a pointer to the interrupt parent node, or NULL if the interrupt
>> * parent could not be determined.
>> */
>> -static struct device_node *of_irq_find_parent(struct device_node *child)
>> +struct device_node *of_irq_find_parent(struct device_node *child)
>> {
>> struct device_node *p;
>> const __be32 *parp;
>> diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
>> index 039f2eec49ce..0c9ea9fb5b63 100644
>> --- a/include/linux/of_irq.h
>> +++ b/include/linux/of_irq.h
>> @@ -93,6 +93,7 @@ static inline void of_msi_configure(struct device *dev,
>> struct device_node *np)
>> * so declare it here regardless of the CONFIG_OF_IRQ setting.
>> */
>> extern unsigned int irq_of_parse_and_map(struct device_node *node, int
>> index);
>> +extern struct device_node *of_irq_find_parent(struct device_node *child);
>
> This is the wrong place to add the prototype, and
>
>> u32 of_msi_map_rid(struct device *dev, struct device_node *msi_np, u32
>> rid_in);
>>
>> #else /* !CONFIG_OF && !CONFIG_SPARC */
>> @@ -102,6 +103,11 @@ static inline unsigned int irq_of_parse_and_map(struct
>> device_node *dev,
>> return 0;
>> }
>>
>> +static inline void *of_irq_find_parent(struct device_node *child)
>> +{
>> + return NULL;
>> +}
>> +
>
> This is the wrong place to add the inline version. Both need to be
> within the #ifdef CONFIG_OF_IRQ ... #else ... #endif block, as the
> function is not available just with CONFIG_OF.
>
>
>> static inline u32 of_msi_map_rid(struct device *dev,
>> struct device_node *msi_np, u32 rid_in)
>
> @Daney:
>
> And this one is at the wrong place as well. Please fix it.
>
> This will break the build if CONFIG_OF is enabled but CONFIG_OF_IRQ
> isn't, and something tries to call these functions.
[1] http://www.spinics.net/lists/arm-kernel/msg464847.html
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