[media] vivid: Fix iteration in driver removal path

When the diver is removed and all the resources are deallocated,
we should be iterating through the created devices only.

Currently, the iteration ends when vivid_devs[i] is NULL. Since
the array contains VIVID_MAX_DEVS elements, it will oops if
n_devs=VIVID_MAX_DEVS because in that case, no element is NULL.

Fixes: c88a96b023d8 ('[media] vivid: add core driver code')
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/platform/vivid/vivid-core.c b/drivers/media/platform/vivid/vivid-core.c
index a047b47167417339bf501286d4ba3d9e3f76894e..0f5e9143cc7ea25930d31c1639daf5670a13d2df 100644 (file)
--- a/drivers/media/platform/vivid/vivid-core.c
+++ b/drivers/media/platform/vivid/vivid-core.c
@@ -1341,8 +1341,11 @@ static int vivid_remove(struct platform_device *pdev)
        struct vivid_dev *dev;
        unsigned i;
 
-       for (i = 0; vivid_devs[i]; i++) {
+
+       for (i = 0; i < n_devs; i++) {
                dev = vivid_devs[i];
+               if (!dev)
+                       continue;
 
                if (dev->has_vid_cap) {
                        v4l2_info(&dev->v4l2_dev, "unregistering %s\n",