diff options
Diffstat (limited to 'drivers/media/v4l2-core/v4l2-mem2mem.c')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-mem2mem.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index 1ed2465972ac..932728841a38 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -908,12 +908,14 @@ struct v4l2_m2m_ctx *v4l2_m2m_ctx_init(struct v4l2_m2m_dev *m2m_dev, if (ret) goto err; /* - * If both queues use same mutex assign it as the common buffer - * queues lock to the m2m context. This lock is used in the - * v4l2_m2m_ioctl_* helpers. + * Both queues should use same the mutex to lock the m2m context. + * This lock is used in some v4l2_m2m_* helpers. */ - if (out_q_ctx->q.lock == cap_q_ctx->q.lock) - m2m_ctx->q_lock = out_q_ctx->q.lock; + if (WARN_ON(out_q_ctx->q.lock != cap_q_ctx->q.lock)) { + ret = -EINVAL; + goto err; + } + m2m_ctx->q_lock = out_q_ctx->q.lock; return m2m_ctx; err: |