From: Sakari Ailus <sakari.ailus@linux.intel.com>
To: linux-media@vger.kernel.org
Cc: sre@kernel.org
Subject: [PATCH v3 08/18] smiapp: Fix resource management in registration failure
Date: Tue, 20 Sep 2016 01:02:41 +0300 [thread overview]
Message-ID: <1474322571-20290-9-git-send-email-sakari.ailus@linux.intel.com> (raw)
In-Reply-To: <1474322571-20290-1-git-send-email-sakari.ailus@linux.intel.com>
If the registered() callback failed, resources were left unaccounted for.
Fix this, as well as add unregistering the sub-devices in driver
unregistered() callback.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
drivers/media/i2c/smiapp/smiapp-core.c | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index 8a58c64..9d7af8b 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -2524,12 +2524,22 @@ static int smiapp_register_subdev(struct smiapp_sensor *sensor,
if (rval) {
dev_err(&client->dev,
"media_create_pad_link failed\n");
+ v4l2_device_unregister_subdev(&ssd->sd);
return rval;
}
return 0;
}
+static void smiapp_unregistered(struct v4l2_subdev *subdev)
+{
+ struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
+ unsigned int i;
+
+ for (i = 1; i < sensor->ssds_used; i++)
+ v4l2_device_unregister_subdev(&sensor->ssds[i].sd);
+}
+
static int smiapp_registered(struct v4l2_subdev *subdev)
{
struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
@@ -2544,10 +2554,19 @@ static int smiapp_registered(struct v4l2_subdev *subdev)
return rval;
}
- return smiapp_register_subdev(
+ rval = smiapp_register_subdev(
sensor, sensor->pixel_array, sensor->binner,
SMIAPP_PA_PAD_SRC, SMIAPP_PAD_SINK,
MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
+ if (rval)
+ goto out_err;
+
+ return 0;
+
+out_err:
+ smiapp_unregistered(subdev);
+
+ return rval;
}
static void smiapp_cleanup(struct smiapp_sensor *sensor)
@@ -2894,6 +2913,7 @@ static const struct media_entity_operations smiapp_entity_ops = {
static const struct v4l2_subdev_internal_ops smiapp_internal_src_ops = {
.registered = smiapp_registered,
+ .unregistered = smiapp_unregistered,
.open = smiapp_open,
.close = smiapp_close,
};
--
2.1.4
next prev parent reply other threads:[~2016-09-19 22:03 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-19 22:02 [PATCH v3 00/18] More smiapp cleanups, fixes Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 01/18] smiapp: Move sub-device initialisation into a separate function Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 02/18] smiapp: Explicitly define number of pads in initialisation Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 03/18] smiapp: Initialise media entity after sensor init Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 04/18] smiapp: Split off sub-device registration into two Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 05/18] smiapp: Provide a common function to obtain native pixel array size Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 06/18] smiapp: Remove unnecessary BUG_ON()'s Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 07/18] smiapp: Always initialise the sensor in probe Sakari Ailus
2016-09-19 22:02 ` Sakari Ailus [this message]
2016-09-19 22:02 ` [PATCH v3 09/18] smiapp: Merge smiapp_init() with smiapp_probe() Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 10/18] smiapp: Read frame format earlier Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 11/18] smiapp: Unify setting up sub-devices Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 12/18] smiapp: Use SMIAPP_PADS when referring to number of pads Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 13/18] smiapp: Obtain frame layout from the frame descriptor Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 14/18] smiapp: Improve debug messages from frame layout reading Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 15/18] smiapp: Remove useless newlines and other small cleanups Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 16/18] smiapp: Obtain correct media bus code for try format Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 17/18] smiapp: Drop a debug print on frame size and bit depth Sakari Ailus
2016-09-19 22:02 ` [PATCH v3 18/18] smiapp-pll: Don't complain aloud about failing PLL calculation Sakari Ailus
2016-09-19 23:27 ` [PATCH v3 00/18] More smiapp cleanups, fixes Sebastian Reichel
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