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SubjectRe: [PATCH v2 35/36] mfd: intel_pmc_bxt: Switch to use driver->dev_groups
On Wed, Jan 08, 2020 at 02:42:00PM +0300, Mika Westerberg wrote:
> The driver core provides support for adding additional attributes for
> devices via new ->dev_groups member of struct device_driver.

I'm wondering if we can also do this before converting to MFD.

> Convert the
> driver to use that instead of adding the attributes manually.
>

After addressing above and below comments,
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

> Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
> ---
> drivers/mfd/intel_pmc_bxt.c | 21 +++++++--------------
> 1 file changed, 7 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/mfd/intel_pmc_bxt.c b/drivers/mfd/intel_pmc_bxt.c
> index 76f166c1455b..9f2eb75bdf78 100644
> --- a/drivers/mfd/intel_pmc_bxt.c
> +++ b/drivers/mfd/intel_pmc_bxt.c
> @@ -244,6 +244,11 @@ static const struct attribute_group intel_pmc_group = {
> .attrs = intel_pmc_attrs,
> };
>
> +static const struct attribute_group *intel_pmc_groups[] = {
> + &intel_pmc_group,

> + NULL,

Comma is not needed for terminator lines.

> +};
> +
> static int pmc_create_punit_device(void)
> {
> struct mfd_cell punit = {
> @@ -492,27 +497,14 @@ static int intel_pmc_probe(struct platform_device *pdev)
> ret = pmc_create_devices();
> if (ret) {
> dev_err(&pdev->dev, "Failed to create pmc devices\n");
> - goto err_ipc;
> - }
> -
> - ret = sysfs_create_group(&pdev->dev.kobj, &intel_pmc_group);
> - if (ret) {
> - dev_err(&pdev->dev, "Failed to create sysfs group %d\n",
> - ret);
> - goto err_ipc;
> + intel_scu_ipc_remove(scu);
> }
>
> - return 0;
> -
> -err_ipc:
> - intel_scu_ipc_remove(scu);
> -
> return ret;
> }
>
> static int intel_pmc_remove(struct platform_device *pdev)
> {
> - sysfs_remove_group(&pdev->dev.kobj, &intel_pmc_group);
> intel_scu_ipc_remove(platform_get_drvdata(pdev));
> pmcdev.dev = NULL;
> return 0;
> @@ -524,6 +516,7 @@ static struct platform_driver intel_pmc_driver = {
> .driver = {
> .name = "intel_pmc_bxt",
> .acpi_match_table = ACPI_PTR(intel_pmc_acpi_ids),
> + .dev_groups = intel_pmc_groups,
> },
> };
>
> --
> 2.24.1
>

--
With Best Regards,
Andy Shevchenko


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