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SubjectRe: [PATCH] mfd: kempld-core: Check for DMI definition before ACPI
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Hi Guenter,

thank you for the feedback! checkpatch didn't catch this.
I sent v2 of the patch.

Best regards,
Michael

On Tue, 2020-11-10 at 06:39 -0800, Guenter Roeck wrote:
> On 11/9/20 11:46 PM, Michael Brunner wrote:
> > Change the detection order to priorize DMI table entries over
> > available
> > ACPI entries.
> >
> > This makes it more easy for product developers to patch product
> > specific
> > handling into the driver.
> > Furthermore it allows to simplify the implementation a bit and
> > especially to remove the need to force synchronous probing.
> >
> > Based on the following commit introduced with v5.10-rc1:
> > commit e8299c7313af ("mfd: Add ACPI support to Kontron PLD driver")
> >
> > Signed-off-by: Michael Brunner <michael.brunner@kontron.com>
> > ---
> > drivers/mfd/kempld-core.c | 23 ++---------------------
> > 1 file changed, 2 insertions(+), 21 deletions(-)
> >
> > diff --git a/drivers/mfd/kempld-core.c b/drivers/mfd/kempld-core.c
> > index 2c9295953c11..aa7f386646a1 100644
> > --- a/drivers/mfd/kempld-core.c
> > +++ b/drivers/mfd/kempld-core.c
> > @@ -125,7 +125,6 @@ static const struct kempld_platform_data
> > kempld_platform_data_generic = {
> > };
> >
> > static struct platform_device *kempld_pdev;
> > -static bool kempld_acpi_mode;
> >
> > static int kempld_create_platform_device(const struct
> > dmi_system_id *id)
> > {
> > @@ -501,8 +500,6 @@ static int kempld_probe(struct platform_device
> > *pdev)
> > ret = kempld_get_acpi_data(pdev);
> > if (ret)
> > return ret;
> > -
> > - kempld_acpi_mode = true;
> > } else if (kempld_pdev != pdev) {
> > /*
> > * The platform device we are probing is not the one we
> > @@ -565,7 +562,6 @@ static struct platform_driver kempld_driver = {
> > .driver = {
> > .name = "kempld",
> > .acpi_match_table = ACPI_PTR(kempld_acpi_table),
> > - .probe_type = PROBE_FORCE_SYNCHRONOUS,
> > },
> > .probe = kempld_probe,
> > .remove = kempld_remove,
> > @@ -884,7 +880,6 @@ MODULE_DEVICE_TABLE(dmi, kempld_dmi_table);
> > static int __init kempld_init(void)
> > {
> > const struct dmi_system_id *id;
> > - int ret;
> >
> > if (force_device_id[0]) {
> > for (id = kempld_dmi_table;
> > @@ -894,24 +889,10 @@ static int __init kempld_init(void)
> > break;
> > if (id->matches[0].slot == DMI_NONE)
> > return -ENODEV;
> > - }
> > -
> > - ret = platform_driver_register(&kempld_driver);
> > - if (ret)
> > - return ret;
> > -
> > - /*
> > - * With synchronous probing the device should already be probed
> > now.
> > - * If no device id is forced and also no ACPI definition for
> > the
> > - * device was found, scan DMI table as fallback.
> > - *
> > - * If drivers_autoprobing is disabled and the device is found
> > here,
> > - * only that device can be bound manually later.
> > - */
> > - if (!kempld_pdev && !kempld_acpi_mode)
> > + } else
>
> } else {
> > dmi_check_system(kempld_dmi_table);
> }
>
> Guenter
>
> >
> > - return 0;
> > + return platform_driver_register(&kempld_driver);
> > }
> >
> > static void __exit kempld_exit(void)
> >

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