media: vimc: zero the media_device on probe

[ Upstream commit f74267b51cb36321f777807b2e04ca02167ecc08 ]

The media_device is part of a static global vimc_device struct.
The media framework expects this to be zeroed before it is
used, however, since this is a global this is not the case if
vimc is unbound and then bound again.

So call memset to ensure any left-over values are cleared.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/media/platform/vimc/vimc-core.c b/drivers/media/platform/vimc/vimc-core.c
index 9246f26..27db883 100644 (file)
--- a/drivers/media/platform/vimc/vimc-core.c
+++ b/drivers/media/platform/vimc/vimc-core.c
@@ -303,6 +303,8 @@ static int vimc_probe(struct platform_device *pdev)
 
        dev_dbg(&pdev->dev, "probe");
 
+       memset(&vimc->mdev, 0, sizeof(vimc->mdev));
+
        /* Create platform_device for each entity in the topology*/
        vimc->subdevs = devm_kcalloc(&vimc->pdev.dev, vimc->pipe_cfg->num_ents,
                                     sizeof(*vimc->subdevs), GFP_KERNEL);