From 2fbdc9bd42c993a6b179a4ddb972b551644aad6e Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Fri, 9 Sep 2011 06:40:56 -0300 Subject: [PATCH] [media] V4L: sh_mobile_csi2: fix unbalanced pm_runtime_put() If the sh_mobile_csi2 driver didn't attach to a client, normally, because the respective device connects to the SoC over the parallel CEU interface and doesn't use the CSI-2 controller, it also shouldn't call pm_runtime_put() on attempted disconnect. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/sh_mobile_csi2.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/media/video/sh_mobile_csi2.c b/drivers/media/video/sh_mobile_csi2.c index 91c680a7284..37706eb81f2 100644 --- a/drivers/media/video/sh_mobile_csi2.c +++ b/drivers/media/video/sh_mobile_csi2.c @@ -208,6 +208,9 @@ static int sh_csi2_client_connect(struct sh_csi2 *priv) unsigned long common_flags, csi2_flags; int i, ret; + if (priv->client) + return -EBUSY; + for (i = 0; i < pdata->num_clients; i++) if (&pdata->clients[i].pdev->dev == icd->pdev) break; @@ -262,6 +265,9 @@ static int sh_csi2_client_connect(struct sh_csi2 *priv) static void sh_csi2_client_disconnect(struct sh_csi2 *priv) { + if (!priv->client) + return; + priv->client = NULL; pm_runtime_put(v4l2_get_subdevdata(&priv->subdev)); -- 2.41.0