On Thu, Mar 10, 2022 at 2:59 PM Srinivas Kandagatla srinivas.kandagatla@linaro.org wrote:
On 10/03/2022 14:14, Rob Herring wrote:
On Thu, Mar 10, 2022 at 4:42 AM Srinivas Kandagatla srinivas.kandagatla@linaro.org wrote:
On 10/03/2022 10:23, Lad, Prabhakar wrote:
On Thu, Mar 10, 2022 at 10:16 AM Srinivas Kandagatla srinivas.kandagatla@linaro.org wrote:
On 24/12/2021 16:13, Lad Prabhakar wrote:
platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static allocation of IRQ resources in DT core code, this causes an issue
Are you saying that we should not be using platform_get_resource(pdev, IORESOURCE_IRQ, ...) on drivers that support DT?
We should be using platform_get_irq(). (period, on all platform drivers)
Thanks, I see why is it preferred.
Code as of now will not prevent drivers from calling platform_get_resource(..IORESOURCE_IRQ).
Are we planning to enforce this in any way?
when using hierarchical interrupt domains using "interrupts" property in the node as this bypasses the hierarchical setup and messes up the irq chaining.
Should this not be fixed in the DT core itself?
Yes the plan is to fix in the DT core itself (refer [0]).
[0] https://patchwork.kernel.org/project/linux-renesas-soc/patch/20211209001056....
In preparation for removal of static setup of IRQ resource from DT core code use platform_get_irq().
I would prefer this patch to be part of the series that removes IRQ resource handling from DT core.
Since there are too many users (which are in different subsystems) getting this all in single series would be a pain. As a result it is split up into individual subsystems.
Am happy for this to be included in that series, TBH, this patch make more sense along with that series than by itself.
No it doesn't. This is no different than converting to devm_* variants or other cleanups to match current preferred styles.
Treewide cross subsystem clean-ups are a huge pain to merge. Why would you ask for that when it is clearly not necessary?
Only reason for this ask was to understand how platform_get_resource() will change moving forward, if this is something that you are planning to include in your fix patches.
I can go ahead and apply the patch, if that helps.
Yes please, that would be helpful.
Cheers, Prabhakar