linux-kernel - [PATCH v2 6/6] media: au0828-core changes to create and destroy media

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <a6e0e993e16fe4f46efd396415ca0847424668f9.1413246372.git.shuahkh@osg.samsung.com>
Date:	Tue, 14 Oct 2014 08:58:42 -0600
From:	Shuah Khan <shuahkh@....samsung.com>
To:	m.chehab@...sung.com, akpm@...ux-foundation.org,
	gregkh@...uxfoundation.org, crope@....fi, olebowle@....com,
	dheitmueller@...nellabs.com, hverkuil@...all.nl,
	ramakrmu@...co.com, sakari.ailus@...ux.intel.com,
	laurent.pinchart@...asonboard.com, perex@...ex.cz, tiwai@...e.de,
	prabhakar.csengg@...il.com, tim.gardner@...onical.com,
	linux@...elenboom.it
Cc:	Shuah Khan <shuahkh@....samsung.com>, linux-media@...r.kernel.org,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 6/6] media: au0828-core changes to create and destroy media

Changed au0828-core to create media token resource in its
usb_probe() and destroy it from usb_disconnect() interfaces.
It creates the resource on the main struct device which is
the parent device for the interface usb device. This is the
main struct device that is common for all the drivers that
control the media device, including the non-media sound
drivers.

Signed-off-by: Shuah Khan <shuahkh@....samsung.com>
---
 drivers/media/usb/au0828/au0828-core.c |   23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c
index bc06480..189e435 100644
--- a/drivers/media/usb/au0828/au0828-core.c
+++ b/drivers/media/usb/au0828/au0828-core.c
@@ -26,6 +26,7 @@
 #include <linux/videodev2.h>
 #include <media/v4l2-common.h>
 #include <linux/mutex.h>
+#include <linux/media_tknres.h>
 
 /*
  * 1 = General debug messages
@@ -127,6 +128,17 @@ static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
 	return status;
 }
 
+/* interfaces to create and destroy media tknres */
+static int au0828_create_media_tknres(struct au0828_dev *dev)
+{
+	return media_tknres_create(&dev->usbdev->dev);
+}
+
+static int au0828_destroy_media_tknres(struct au0828_dev *dev)
+{
+	return media_tknres_destroy(&dev->usbdev->dev);
+}
+
 static void au0828_usb_release(struct au0828_dev *dev)
 {
 	/* I2C */
@@ -157,6 +169,8 @@ static void au0828_usb_disconnect(struct usb_interface *interface)
 	/* Digital TV */
 	au0828_dvb_unregister(dev);
 
+	au0828_destroy_media_tknres(dev);
+
 	usb_set_intfdata(interface, NULL);
 	mutex_lock(&dev->mutex);
 	dev->usbdev = NULL;
@@ -215,6 +229,13 @@ static int au0828_usb_probe(struct usb_interface *interface,
 	dev->usbdev = usbdev;
 	dev->boardnr = id->driver_info;
 
+	/* create media token resource */
+	if (au0828_create_media_tknres(dev)) {
+		mutex_unlock(&dev->lock);
+		kfree(dev);
+		return -ENOMEM;
+	}
+
 #ifdef CONFIG_VIDEO_AU0828_V4L2
 	dev->v4l2_dev.release = au0828_usb_v4l2_release;
 
@@ -223,6 +244,7 @@ static int au0828_usb_probe(struct usb_interface *interface,
 	if (retval) {
 		pr_err("%s() v4l2_device_register failed\n",
 		       __func__);
+		au0828_destroy_media_tknres(dev);
 		mutex_unlock(&dev->lock);
 		kfree(dev);
 		return retval;
@@ -232,6 +254,7 @@ static int au0828_usb_probe(struct usb_interface *interface,
 	if (retval) {
 		pr_err("%s() v4l2_ctrl_handler_init failed\n",
 		       __func__);
+		au0828_destroy_media_tknres(dev);
 		mutex_unlock(&dev->lock);
 		kfree(dev);
 		return retval;
-- 
1.7.10.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/