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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2011-09-09 06:40:56 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-11-03 18:29:00 -0200
commit2fbdc9bd42c993a6b179a4ddb972b551644aad6e (patch)
treef548d7481225963b38354359f4339cdca3e21b77 /drivers/media/video
parent443f483aa2494b93d73ba122cafdf2ef89989ed7 (diff)
[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 <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video')
-rw-r--r--drivers/media/video/sh_mobile_csi2.c6
1 files changed, 6 insertions, 0 deletions
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));