Thread (34 messages) 34 messages, 4 authors, 13d ago

Re: [PATCH v3 05/11] mfd: lm3533: Convert to use OF bindings

From: Svyatoslav Ryhel <hidden>
Date: 2026-06-02 12:00:28
Also in: dri-devel, linux-devicetree, linux-iio, linux-leds, lkml

вт, 2 черв. 2026 р. о 14:05 Andy Shevchenko [off-list ref] пише:
On Tue, Jun 02, 2026 at 01:31:44PM +0300, Svyatoslav Ryhel wrote:
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вт, 2 черв. 2026 р. о 11:24 Andy Shevchenko [off-list ref] пише:
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On Mon, Jun 01, 2026 at 06:18:25PM +0300, Svyatoslav Ryhel wrote:

...
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+     device_for_each_child_node_scoped(lm3533->dev, child) {
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+             if (!fwnode_device_is_available(child))
+                     continue;
Do we need this check?
This is nice to have if the node is disabled. If we assume that there
are no disabled nodes, I can remove it.
It's already implied. See

static struct fwnode_handle *
of_fwnode_get_next_child_node(const struct fwnode_handle *fwnode, struct fwnode_handle *child)
{
        return of_fwnode_handle(of_get_next_available_child(to_of_node(fwnode), to_of_node(child)));
}

And I believe it's written somewhere in the documentation (if not, feel free to
patch that).
Very nice. Thank you.
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+     ret = sysfs_create_group(&dev->kobj, &lm3533_attribute_group);
No way. You should use .dev_groups.
I did not change how driver does this, just swapped lm3533->dev to
dev. I will set is back as it was.
This is a serious race condition that needs to be addressed. Since you are
touching this driver the fixes against known issues probably are the first
things that have to be done.
Fine, I will have a look.
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+     if (ret) {
+             dev_err(dev, "failed to create sysfs attributes\n");
              goto err_unregister;
      }
...
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Can you think on how to split this change to smaller steps? I believe it's
possible.
No, I am done with tinkering with this patchset. It is broken enough
and it has inflated enough.
Probably you don't want this to be reviewed then? I believe other kernel
developers and maintainers will ask you the same.

--
With Best Regards,
Andy Shevchenko
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