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authorGuenter Roeck <linux@roeck-us.net>2020-11-11 02:52:01 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2020-11-16 17:18:38 +0300
commit7dc7a8b04f3da8aa3c3be514e155e2fa094e976f (patch)
treef9cbbd345bb9f1696f936b53e7206a9d4f047e92 /drivers/acpi
parent09162bc32c880a791c6c0668ce0745cf7958f576 (diff)
downloadlinux-7dc7a8b04f3da8aa3c3be514e155e2fa094e976f.tar.xz
ACPI: fan: Initialize performance state sysfs attribute
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") Signed-off-by: Guenter Roeck <linux@roeck-us.net> Cc: 5.6+ <stable@vger.kernel.org> # 5.6+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/fan.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 48354f82fba6..66c3983f0ccc 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -352,6 +352,7 @@ 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;