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media: ccs: Fix a (harmless) lockdep warning

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The v4l2_subdev_init_finalize() is a macro that creates an unique lockdep
key and name. As the CCS driver initialises all three of its sub-devices
using the same call site, this creates a lockdep warning. Address it.

Fixes: d8bca3ed1d ("media: ccs: Use sub-device active state")
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Sakari Ailus 2023-10-09 14:54:57 +03:00 committed by Hans Verkuil
parent 256b7767c9
commit 827804d6d7
1 changed files with 12 additions and 5 deletions
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17
drivers/media/i2c/ccs/ccs-core.c
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@ -2955,7 +2955,9 @@ static void ccs_cleanup(struct ccs_sensor *sensor)
static int ccs_init_subdev(struct ccs_sensor *sensor,
struct ccs_subdev *ssd, const char *name,
unsigned short num_pads, u32 function)
unsigned short num_pads, u32 function,
const char *lock_name,
struct lock_class_key *lock_key)
{
struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
int rval;
@ -2993,7 +2995,7 @@ static int ccs_init_subdev(struct ccs_sensor *sensor,
return rval;
}
rval = v4l2_subdev_init_finalize(&ssd->sd);
rval = __v4l2_subdev_init_finalize(&ssd->sd, lock_name, lock_key);
if (rval) {
media_entity_cleanup(&ssd->sd.entity);
return rval;
@ -3206,6 +3208,8 @@ static int ccs_firmware_name(struct i2c_client *client,
static int ccs_probe(struct i2c_client *client)
{
static struct lock_class_key pixel_array_lock_key, binner_lock_key,
scaler_lock_key;
const struct ccs_device *ccsdev = device_get_match_data(&client->dev);
struct ccs_sensor *sensor;
const struct firmware *fw;
@ -3489,15 +3493,18 @@ static int ccs_probe(struct i2c_client *client)
}
rval = ccs_init_subdev(sensor, sensor->scaler, " scaler", 2,
MEDIA_ENT_F_PROC_VIDEO_SCALER);
MEDIA_ENT_F_PROC_VIDEO_SCALER,
"ccs scaler mutex", &scaler_lock_key);
if (rval)
goto out_cleanup;
rval = ccs_init_subdev(sensor, sensor->binner, " binner", 2,
MEDIA_ENT_F_PROC_VIDEO_SCALER);
MEDIA_ENT_F_PROC_VIDEO_SCALER,
"ccs binner mutex", &binner_lock_key);
if (rval)
goto out_cleanup;
rval = ccs_init_subdev(sensor, sensor->pixel_array, " pixel_array", 1,
MEDIA_ENT_F_CAM_SENSOR);
MEDIA_ENT_F_CAM_SENSOR, "ccs pixel array mutex",
&pixel_array_lock_key);
if (rval)
goto out_cleanup;