linux-kernel - [PATCH] v4l: fix build error for et61x251 driver

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Message-ID: <20070913222717.GC5764@devil>
Date:	Fri, 14 Sep 2007 00:27:17 +0200
From:	Andreas Herrmann <aherrman@...or.de>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	akpm@...ux-foundation.org, linux-usb-devel@...ts.sourceforge.net,
	video4linux-list@...hat.com, linux-kernel@...r.kernel.org,
	Luca Risolia <luca.risolia@...dio.unibo.it>
Subject: [PATCH] v4l: fix build error for et61x251 driver

This fixes a kernel build problem and
should make it into 2.6.23, I think.


Regards,

Andreas

--

Get rid of some v4l1 remainders to avoid kernel build errors if
V4L1_COMPAT is not selected:

  drivers/media/video/et61x251/et61x251_core.c: In et61x251_show_:
  drivers/media/video/et61x251/et61x251_core.c:718: error: implicit
    declaration of to_video_device

Fix as suggested by  Luca Risolia <luca.risolia@...dio.unibo.it>

Signed-off-by: Andreas Herrmann <aherrman@...or.de>
---
 drivers/media/video/et61x251/et61x251_core.c |   24 ++++++++++++++++--------
 1 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/drivers/media/video/et61x251/et61x251_core.c b/drivers/media/video/et61x251/et61x251_core.c
index 585bd1f..a3ee968 100644
--- a/drivers/media/video/et61x251/et61x251_core.c
+++ b/drivers/media/video/et61x251/et61x251_core.c
@@ -715,7 +715,8 @@ static ssize_t et61x251_show_reg(struct class_device* cd, char* buf)
 	if (mutex_lock_interruptible(&et61x251_sysfs_lock))
 		return -ERESTARTSYS;
 
-	cam = video_get_drvdata(to_video_device(cd));
+	cam = video_get_drvdata(container_of(cd, struct video_device,
+					     class_dev));
 	if (!cam) {
 		mutex_unlock(&et61x251_sysfs_lock);
 		return -ENODEV;
@@ -739,7 +740,8 @@ et61x251_store_reg(struct class_device* cd, const char* buf, size_t len)
 	if (mutex_lock_interruptible(&et61x251_sysfs_lock))
 		return -ERESTARTSYS;
 
-	cam = video_get_drvdata(to_video_device(cd));
+	cam = video_get_drvdata(container_of(cd, struct video_device,
+					     class_dev));
 	if (!cam) {
 		mutex_unlock(&et61x251_sysfs_lock);
 		return -ENODEV;
@@ -771,7 +773,8 @@ static ssize_t et61x251_show_val(struct class_device* cd, char* buf)
 	if (mutex_lock_interruptible(&et61x251_sysfs_lock))
 		return -ERESTARTSYS;
 
-	cam = video_get_drvdata(to_video_device(cd));
+	cam = video_get_drvdata(container_of(cd, struct video_device,
+					     class_dev));
 	if (!cam) {
 		mutex_unlock(&et61x251_sysfs_lock);
 		return -ENODEV;
@@ -803,7 +806,8 @@ et61x251_store_val(struct class_device* cd, const char* buf, size_t len)
 	if (mutex_lock_interruptible(&et61x251_sysfs_lock))
 		return -ERESTARTSYS;
 
-	cam = video_get_drvdata(to_video_device(cd));
+	cam = video_get_drvdata(container_of(cd, struct video_device,
+					     class_dev));
 	if (!cam) {
 		mutex_unlock(&et61x251_sysfs_lock);
 		return -ENODEV;
@@ -839,7 +843,8 @@ static ssize_t et61x251_show_i2c_reg(struct class_device* cd, char* buf)
 	if (mutex_lock_interruptible(&et61x251_sysfs_lock))
 		return -ERESTARTSYS;
 
-	cam = video_get_drvdata(to_video_device(cd));
+	cam = video_get_drvdata(container_of(cd, struct video_device,
+					     class_dev));
 	if (!cam) {
 		mutex_unlock(&et61x251_sysfs_lock);
 		return -ENODEV;
@@ -865,7 +870,8 @@ et61x251_store_i2c_reg(struct class_device* cd, const char* buf, size_t len)
 	if (mutex_lock_interruptible(&et61x251_sysfs_lock))
 		return -ERESTARTSYS;
 
-	cam = video_get_drvdata(to_video_device(cd));
+	cam = video_get_drvdata(container_of(cd, struct video_device,
+					     class_dev));
 	if (!cam) {
 		mutex_unlock(&et61x251_sysfs_lock);
 		return -ENODEV;
@@ -897,7 +903,8 @@ static ssize_t et61x251_show_i2c_val(struct class_device* cd, char* buf)
 	if (mutex_lock_interruptible(&et61x251_sysfs_lock))
 		return -ERESTARTSYS;
 
-	cam = video_get_drvdata(to_video_device(cd));
+	cam = video_get_drvdata(container_of(cd, struct video_device,
+					     class_dev));
 	if (!cam) {
 		mutex_unlock(&et61x251_sysfs_lock);
 		return -ENODEV;
@@ -934,7 +941,8 @@ et61x251_store_i2c_val(struct class_device* cd, const char* buf, size_t len)
 	if (mutex_lock_interruptible(&et61x251_sysfs_lock))
 		return -ERESTARTSYS;
 
-	cam = video_get_drvdata(to_video_device(cd));
+	cam = video_get_drvdata(container_of(cd, struct video_device,
+					     class_dev));
 	if (!cam) {
 		mutex_unlock(&et61x251_sysfs_lock);
 		return -ENODEV;
-- 
1.5.3


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