Built and tested on Chromebook w/ 5.4 kernel.
Sorry about the churn -- will start building with warnings = errors
before I send patches upstream.
Thanks
Abhishek
On Tue, Jul 7, 2020 at 9:24 AM Abhishek Pandit-Subedi
<abhishekpandit@xxxxxxxxxxxx> wrote:
>
> Udev rules that depend on the power/wakeup attribute don't get triggered
> correctly if device_set_wakeup_capable is called after the device is
> created. This can happen for several reasons (driver sets wakeup after
> device is created, wakeup is changed on parent device, etc) and it seems
> reasonable to emit a changed event when adding or removing attributes on
> the device.
>
> Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@xxxxxxxxxxxx>
> ---
>
> Changes in v4:
> - Fix warning where returning from void and tested on device
>
> Changes in v3:
> - Simplified error handling
>
> Changes in v2:
> - Add newline at end of bt_dev_err
>
> drivers/base/power/sysfs.c | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
> index 24d25cf8ab1487..aeb58d40aac8de 100644
> --- a/drivers/base/power/sysfs.c
> +++ b/drivers/base/power/sysfs.c
> @@ -1,6 +1,7 @@
> // SPDX-License-Identifier: GPL-2.0
> /* sysfs entries for device PM */
> #include <linux/device.h>
> +#include <linux/kobject.h>
> #include <linux/string.h>
> #include <linux/export.h>
> #include <linux/pm_qos.h>
> @@ -739,12 +740,18 @@ int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid, kgid_t kgid)
>
> int wakeup_sysfs_add(struct device *dev)
> {
> - return sysfs_merge_group(&dev->kobj, &pm_wakeup_attr_group);
> + int ret = sysfs_merge_group(&dev->kobj, &pm_wakeup_attr_group);
> +
> + if (ret)
> + return ret;
> +
> + return kobject_uevent(&dev->kobj, KOBJ_CHANGE);
> }
>
> void wakeup_sysfs_remove(struct device *dev)
> {
> sysfs_unmerge_group(&dev->kobj, &pm_wakeup_attr_group);
> + kobject_uevent(&dev->kobj, KOBJ_CHANGE);
> }
>
> int pm_qos_sysfs_add_resume_latency(struct device *dev)
> --
> 2.27.0.212.ge8ba1cc988-goog
>
