[media] V4L: soc-camera: explicitly free allocated managed memory on error

devm_kzalloc() allocations are freed when the device is unbound. But if a
certain path fails and the allocated memory cannot be used anyway it is
better to free it explicitly immediately. This patch does exactly this if
asynchronous group probing in scan_async_group() fails after memory has
been allocated.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/media/platform/soc_camera/soc_camera.c b/drivers/media/platform/soc_camera/soc_camera.c
index 7fec8cd..dc626b9 100644 (file)
--- a/drivers/media/platform/soc_camera/soc_camera.c
+++ b/drivers/media/platform/soc_camera/soc_camera.c
@@ -1524,14 +1524,14 @@ static int scan_async_group(struct soc_camera_host *ici,
 
        ret = soc_camera_dyn_pdev(&sdesc, sasc);
        if (ret < 0)
-               return ret;
+               goto eallocpdev;
 
        sasc->sensor = &sasd->asd;
 
        icd = soc_camera_add_pdev(sasc);
        if (!icd) {
-               platform_device_put(sasc->pdev);
-               return -ENOMEM;
+               ret = -ENOMEM;
+               goto eaddpdev;
        }
 
        sasc->notifier.subdevs = asd;
@@ -1559,7 +1559,11 @@ static int scan_async_group(struct soc_camera_host *ici,
        v4l2_clk_unregister(icd->clk);
 eclkreg:
        icd->clk = NULL;
-       platform_device_unregister(sasc->pdev);
+       platform_device_del(sasc->pdev);
+eaddpdev:
+       platform_device_put(sasc->pdev);
+eallocpdev:
+       devm_kfree(ici->v4l2_dev.dev, sasc);
        dev_err(ici->v4l2_dev.dev, "group probe failed: %d\n", ret);
 
        return ret;