From 87c674e24362cf0f8d5b70d2e20f6160045fd753 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 13 Mar 2015 07:41:05 -0300 Subject: [PATCH] [media] vivid: use v4l2_device.release to clean up the driver Use the release callback of the v4l2_device to clean up the memory. This prevents vivid from breaking if someone tries to unbind the driver. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/vivid/vivid-core.c | 43 ++++++++++++----------- 1 file changed, 23 insertions(+), 20 deletions(-) diff --git a/drivers/media/platform/vivid/vivid-core.c b/drivers/media/platform/vivid/vivid-core.c index d2558db27751..d33f16495dbc 100644 --- a/drivers/media/platform/vivid/vivid-core.c +++ b/drivers/media/platform/vivid/vivid-core.c @@ -619,6 +619,22 @@ static const struct v4l2_ioctl_ops vivid_ioctl_ops = { Initialization and module stuff ------------------------------------------------------------------*/ +static void vivid_dev_release(struct v4l2_device *v4l2_dev) +{ + struct vivid_dev *dev = container_of(v4l2_dev, struct vivid_dev, v4l2_dev); + + vivid_free_controls(dev); + v4l2_device_unregister(&dev->v4l2_dev); + vfree(dev->scaled_line); + vfree(dev->blended_line); + vfree(dev->edid); + vfree(dev->bitmap_cap); + vfree(dev->bitmap_out); + tpg_free(&dev->tpg); + kfree(dev->query_dv_timings_qmenu); + kfree(dev); +} + static int vivid_create_instance(struct platform_device *pdev, int inst) { static const struct v4l2_dv_timings def_dv_timings = @@ -648,8 +664,11 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name), "%s-%03d", VIVID_MODULE_NAME, inst); ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); - if (ret) - goto free_dev; + if (ret) { + kfree(dev); + return ret; + } + dev->v4l2_dev.release = vivid_dev_release; /* start detecting feature set */ @@ -1257,15 +1276,8 @@ unreg_dev: video_unregister_device(&dev->vbi_cap_dev); video_unregister_device(&dev->vid_out_dev); video_unregister_device(&dev->vid_cap_dev); - vivid_free_controls(dev); - v4l2_device_unregister(&dev->v4l2_dev); free_dev: - vfree(dev->scaled_line); - vfree(dev->blended_line); - vfree(dev->edid); - tpg_free(&dev->tpg); - kfree(dev->query_dv_timings_qmenu); - kfree(dev); + v4l2_device_put(&dev->v4l2_dev); return ret; } @@ -1359,16 +1371,7 @@ static int vivid_remove(struct platform_device *pdev) unregister_framebuffer(&dev->fb_info); vivid_fb_release_buffers(dev); } - v4l2_device_unregister(&dev->v4l2_dev); - vivid_free_controls(dev); - vfree(dev->scaled_line); - vfree(dev->blended_line); - vfree(dev->edid); - vfree(dev->bitmap_cap); - vfree(dev->bitmap_out); - tpg_free(&dev->tpg); - kfree(dev->query_dv_timings_qmenu); - kfree(dev); + v4l2_device_put(&dev->v4l2_dev); vivid_devs[i] = NULL; } return 0; -- 2.39.5