APPLIED: [Xenial][PATCH] UBUNTU: SAUCE: Revert: Revert "ACPI / LPSS: allow to use specific PM domain during ->probe()"
Kleber Souza
kleber.souza at canonical.com
Thu May 28 15:10:11 UTC 2020
On 2020-05-28 15:19, Wen-chien Jesse Sung wrote:
> BugLink: https://launchpad.net/bugs/1881124
>
> I2C bus on Dell Edge Gateway stops working after commit
> Revert "ACPI / LPSS: allow to use specific PM domain during ->probe()"
> with error messages like:
>
> [ 13.812210] i2c_designware 80860F41:01: Unknown Synopsys component type: 0x00000000
> [ 13.855837] i2c_designware 80860F41:01: timeout in enabling adapter
> [ 14.856276] i2c_designware 80860F41:01: controller timed out
> [ 14.856288] i2c_designware 80860F41:01: Unknown Synopsys component type: 0x00000000
>
> Revert the commit for now until we figure out what is really causing
> the problem.
>
> Signed-off-by: Wen-chien Jesse Sung <jesse.sung at canonical.com>
Applied to xenial/linux.
Thanks,
Kleber
> ---
> drivers/acpi/acpi_lpss.c | 8 ++------
> 1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
> index 65e7b3133fbc..3ae8001ddaf1 100644
> --- a/drivers/acpi/acpi_lpss.c
> +++ b/drivers/acpi/acpi_lpss.c
> @@ -834,13 +834,8 @@ static int acpi_lpss_platform_notify(struct notifier_block *nb,
> }
>
> switch (action) {
> - case BUS_NOTIFY_BOUND_DRIVER:
> - pdev->dev.pm_domain = &acpi_lpss_pm_domain;
> - break;
> - case BUS_NOTIFY_UNBOUND_DRIVER:
> - pdev->dev.pm_domain = NULL;
> - break;
> case BUS_NOTIFY_ADD_DEVICE:
> + pdev->dev.pm_domain = &acpi_lpss_pm_domain;
> if (pdata->dev_desc->flags & LPSS_LTR)
> return sysfs_create_group(&pdev->dev.kobj,
> &lpss_attr_group);
> @@ -848,6 +843,7 @@ static int acpi_lpss_platform_notify(struct notifier_block *nb,
> case BUS_NOTIFY_DEL_DEVICE:
> if (pdata->dev_desc->flags & LPSS_LTR)
> sysfs_remove_group(&pdev->dev.kobj, &lpss_attr_group);
> + pdev->dev.pm_domain = NULL;
> break;
> default:
> break;
>
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