| Message ID | 20201110235201.76981-1-linux@roeck-us.net (mailing list archive) |
|---|---|
| State | Mainlined, archived |
| Headers | show |
| Series | ACPI: fan: Initialize performance state sysfs attribute | expand |
On Wed, Nov 11, 2020 at 12:52 AM Guenter Roeck <linux@roeck-us.net> wrote: > > The following warning is reported if lock debugging is enabled. > > DEBUG_LOCKS_WARN_ON(1) > WARNING: CPU: 1 PID: 1 at kernel/locking/lockdep.c:4617 lockdep_init_map_waits+0x141/0x222 > ... > Call Trace: > __kernfs_create_file+0x7a/0xd8 > sysfs_add_file_mode_ns+0x135/0x189 > sysfs_create_file_ns+0x70/0xa0 > acpi_fan_probe+0x547/0x621 > platform_drv_probe+0x67/0x8b > ... > > Dynamically allocated sysfs attributes need to be initialized to avoid > the warning. > > Fixes: d19e470b6605 ("ACPI: fan: Expose fan performance state information") > Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> > Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > Signed-off-by: Guenter Roeck <linux@roeck-us.net> > --- > drivers/acpi/fan.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c > index 62873388b24f..9cbe58e394d0 100644 > --- a/drivers/acpi/fan.c > +++ b/drivers/acpi/fan.c > @@ -351,6 +351,7 @@ static int acpi_fan_get_fps(struct acpi_device *device) > struct acpi_fan_fps *fps = &fan->fps[i]; > > snprintf(fps->name, ACPI_FPS_NAME_LEN, "state%d", i); > + sysfs_attr_init(&fps->dev_attr.attr); > fps->dev_attr.show = show_state; > fps->dev_attr.store = NULL; > fps->dev_attr.attr.name = fps->name; > -- Applied as 5.11 material, thanks!
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c index 62873388b24f..9cbe58e394d0 100644 --- a/drivers/acpi/fan.c +++ b/drivers/acpi/fan.c @@ -351,6 +351,7 @@ static int acpi_fan_get_fps(struct acpi_device *device) struct acpi_fan_fps *fps = &fan->fps[i]; snprintf(fps->name, ACPI_FPS_NAME_LEN, "state%d", i); + sysfs_attr_init(&fps->dev_attr.attr); fps->dev_attr.show = show_state; fps->dev_attr.store = NULL; fps->dev_attr.attr.name = fps->name;
The following warning is reported if lock debugging is enabled. DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 1 PID: 1 at kernel/locking/lockdep.c:4617 lockdep_init_map_waits+0x141/0x222 ... Call Trace: __kernfs_create_file+0x7a/0xd8 sysfs_add_file_mode_ns+0x135/0x189 sysfs_create_file_ns+0x70/0xa0 acpi_fan_probe+0x547/0x621 platform_drv_probe+0x67/0x8b ... Dynamically allocated sysfs attributes need to be initialized to avoid the warning. Fixes: d19e470b6605 ("ACPI: fan: Expose fan performance state information") Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> --- drivers/acpi/fan.c | 1 + 1 file changed, 1 insertion(+)