Re: [PATCH 7/8] mfd: twl-core: make reg_write callback take const void *

Thank you for your contribution! Sashiko AI review found 2 potential issue(s) to consider:

New issues:
- [Low] The commit message description is not capitalized, violating MFD subsystem guidelines.

Pre-existing issues:
- [High] Probe failure during MFD device registration skips manual resource cleanup, causing resource leaks.
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--- Patch [7]: [PATCH 7/8] mfd: twl-core: make reg_write callback take const void * ---
commit 5525fd3bfa73424e942892bd1e1fb2d2e9554159
Author: Link Mauve <[email protected]>

mfd: twl-core: make reg_write callback take const void *

This commit updates the reg_write callback to use a const void pointer for
its data argument. It fixes all users of the nvmem_config API to accommodate
this change.

> mfd: twl-core: make reg_write callback take const void *

[Severity: Low]
This isn't a bug, but should the description after the subsystem prefix be
capitalized (i.e., "Make reg_write...") to match the MFD subsystem guidelines?

[Severity: High]
This is a pre-existing issue, but I noticed a potential resource leak in
twl_probe(). If devm_mfd_add_devices() fails, the code jumps directly to
the 'free' label, skipping the 'fail' label:

drivers/mfd/twl-core.c:twl_probe() {
    ...
		status = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE,
					      cells, num_cells, NULL, 0, NULL);
		if (status < 0)
			goto free;
    ...
fail:
	if (status < 0)
		twl_remove(client);
free:
	if (status < 0)
		platform_device_unregister(pdev);
    ...
}

Does this bypass leak manually requested IRQ domains and unmanaged dummy I2C
devices by skipping twl_remove()?

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Sashiko AI review · https://sashiko.dev/#/patchset/[email protected]?part=7