V4L/DVB (8776): radio: replace video_exclusive_open/release

Move the video_exclusive_open/release functionality into the driver itself.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

13 files changed, 185 insertions, 31 deletions

diff --git a/drivers/media/radio/radio-aimslab.c b/drivers/media/radio/radio-aimslab.c
index 1f064f4..b657c7b 100644
--- a/drivers/media/radio/radio-aimslab.c
+++ b/drivers/media/radio/radio-aimslab.c
@@ -51,6 +51,7 @@ static struct mutex lock;
 
 struct rt_device
 {
+	unsigned long in_use;
 	int port;
 	int curvol;
 	unsigned long curfreq;
@@ -378,10 +379,21 @@ static int vidioc_s_audio(struct file *file, void *priv,
 
 static struct rt_device rtrack_unit;
 
+static int rtrack_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &rtrack_unit.in_use) ? -EBUSY : 0;
+}
+
+static int rtrack_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &rtrack_unit.in_use);
+	return 0;
+}
+
 static const struct file_operations rtrack_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = rtrack_exclusive_open,
+	.release        = rtrack_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
diff --git a/drivers/media/radio/radio-aztech.c b/drivers/media/radio/radio-aztech.c
index 628c689..ae18a7c 100644
--- a/drivers/media/radio/radio-aztech.c
+++ b/drivers/media/radio/radio-aztech.c
@@ -70,6 +70,7 @@ static struct mutex lock;
 
 struct az_device
 {
+	unsigned long in_use;
 	int curvol;
 	unsigned long curfreq;
 	int stereo;
@@ -342,10 +343,21 @@ static int vidioc_s_ctrl (struct file *file, void *priv,
 
 static struct az_device aztech_unit;
 
+static int aztech_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &aztech_unit.in_use) ? -EBUSY : 0;
+}
+
+static int aztech_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &aztech_unit.in_use);
+	return 0;
+}
+
 static const struct file_operations aztech_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = aztech_exclusive_open,
+	.release        = aztech_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
diff --git a/drivers/media/radio/radio-gemtek-pci.c b/drivers/media/radio/radio-gemtek-pci.c
index 5cd7f03..a7b9a5d 100644
--- a/drivers/media/radio/radio-gemtek-pci.c
+++ b/drivers/media/radio/radio-gemtek-pci.c
@@ -100,9 +100,8 @@ struct gemtek_pci_card {
 	u8  mute;
 };
 
-static const char rcsid[] = "$Id: radio-gemtek-pci.c,v 1.1 2001/07/23 08:08:16 ted Exp ted $";
-
 static int nr_radio = -1;
+static unsigned long in_use;
 
 static inline u8 gemtek_pci_out( u16 value, u32 port )
 {
@@ -364,10 +363,21 @@ MODULE_DEVICE_TABLE( pci, gemtek_pci_id );
 
 static int mx = 1;
 
+static int gemtek_pci_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+}
+
+static int gemtek_pci_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &in_use);
+	return 0;
+}
+
 static const struct file_operations gemtek_pci_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = gemtek_pci_exclusive_open,
+	.release        = gemtek_pci_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
diff --git a/drivers/media/radio/radio-gemtek.c b/drivers/media/radio/radio-gemtek.c
index 0a0f956..cc90329 100644
--- a/drivers/media/radio/radio-gemtek.c
+++ b/drivers/media/radio/radio-gemtek.c
@@ -57,6 +57,7 @@ static int shutdown	= 1;
 static int keepmuted	= 1;
 static int initmute	= 1;
 static int radio_nr	= -1;
+static unsigned long in_use;
 
 module_param(io, int, 0444);
 MODULE_PARM_DESC(io, "Force I/O port for the GemTek Radio card if automatic "
@@ -393,10 +394,21 @@ static struct v4l2_queryctrl radio_qctrl[] = {
 	}
 };
 
+static int gemtek_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+}
+
+static int gemtek_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &in_use);
+	return 0;
+}
+
 static const struct file_operations gemtek_fops = {
 	.owner		= THIS_MODULE,
-	.open		= video_exclusive_open,
-	.release	= video_exclusive_release,
+	.open		= gemtek_exclusive_open,
+	.release	= gemtek_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
diff --git a/drivers/media/radio/radio-maestro.c b/drivers/media/radio/radio-maestro.c
index 9ef0a76..03c2094 100644
--- a/drivers/media/radio/radio-maestro.c
+++ b/drivers/media/radio/radio-maestro.c
@@ -75,7 +75,21 @@ static struct v4l2_queryctrl radio_qctrl[] = {
 static int radio_nr = -1;
 module_param(radio_nr, int, 0);
 
+static unsigned long in_use;
+
 static int maestro_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
+
+static int maestro_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+}
+
+static int maestro_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &in_use);
+	return 0;
+}
+
 static void maestro_remove(struct pci_dev *pdev);
 
 static struct pci_device_id maestro_r_pci_tbl[] = {
@@ -98,8 +112,8 @@ static struct pci_driver maestro_r_driver = {
 
 static const struct file_operations maestro_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = maestro_exclusive_open,
+	.release        = maestro_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
diff --git a/drivers/media/radio/radio-maxiradio.c b/drivers/media/radio/radio-maxiradio.c
index 0cc6fcb..263ef8b 100644
--- a/drivers/media/radio/radio-maxiradio.c
+++ b/drivers/media/radio/radio-maxiradio.c
@@ -85,6 +85,7 @@ static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16 ;
 static int radio_nr = -1;
 module_param(radio_nr, int, 0);
 
+static unsigned long in_use;
 
 #define FREQ_LO		 50*16000
 #define FREQ_HI		150*16000
@@ -99,10 +100,21 @@ module_param(radio_nr, int, 0);
 #define BITS2FREQ(x)	((x) * FREQ_STEP - FREQ_IF)
 
 
+static int maxiradio_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+}
+
+static int maxiradio_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &in_use);
+	return 0;
+}
+
 static const struct file_operations maxiradio_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = maxiradio_exclusive_open,
+	.release        = maxiradio_exclusive_release,
 	.ioctl          = video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
diff --git a/drivers/media/radio/radio-rtrack2.c b/drivers/media/radio/radio-rtrack2.c
index 6d820e2..5b93b47 100644
--- a/drivers/media/radio/radio-rtrack2.c
+++ b/drivers/media/radio/radio-rtrack2.c
@@ -52,6 +52,7 @@ static spinlock_t lock;
 
 struct rt_device
 {
+	unsigned long in_use;
 	int port;
 	unsigned long curfreq;
 	int muted;
@@ -284,10 +285,21 @@ static int vidioc_s_audio(struct file *file, void *priv,
 
 static struct rt_device rtrack2_unit;
 
+static int rtrack2_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &rtrack2_unit.in_use) ? -EBUSY : 0;
+}
+
+static int rtrack2_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &rtrack2_unit.in_use);
+	return 0;
+}
+
 static const struct file_operations rtrack2_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = rtrack2_exclusive_open,
+	.release        = rtrack2_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
diff --git a/drivers/media/radio/radio-sf16fmi.c b/drivers/media/radio/radio-sf16fmi.c
index 0d478f5..55f8334 100644
--- a/drivers/media/radio/radio-sf16fmi.c
+++ b/drivers/media/radio/radio-sf16fmi.c
@@ -45,6 +45,7 @@ static struct v4l2_queryctrl radio_qctrl[] = {
 
 struct fmi_device
 {
+	unsigned long in_use;
 	int port;
 	int curvol; /* 1 or 0 */
 	unsigned long curfreq; /* freq in kHz */
@@ -284,10 +285,21 @@ static int vidioc_s_audio(struct file *file, void *priv,
 
 static struct fmi_device fmi_unit;
 
+static int fmi_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &fmi_unit.in_use) ? -EBUSY : 0;
+}
+
+static int fmi_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &fmi_unit.in_use);
+	return 0;
+}
+
 static const struct file_operations fmi_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = fmi_exclusive_open,
+	.release        = fmi_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
diff --git a/drivers/media/radio/radio-sf16fmr2.c b/drivers/media/radio/radio-sf16fmr2.c
index 6290553..14153ed 100644
--- a/drivers/media/radio/radio-sf16fmr2.c
+++ b/drivers/media/radio/radio-sf16fmr2.c
@@ -64,6 +64,7 @@ static struct v4l2_queryctrl radio_qctrl[] = {
 /* this should be static vars for module size */
 struct fmr2_device
 {
+	unsigned long in_use;
 	int port;
 	int curvol; /* 0-15 */
 	int mute;
@@ -400,10 +401,21 @@ static int vidioc_s_audio(struct file *file, void *priv,
 
 static struct fmr2_device fmr2_unit;
 
+static int fmr2_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &fmr2_unit.in_use) ? -EBUSY : 0;
+}
+
+static int fmr2_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &fmr2_unit.in_use);
+	return 0;
+}
+
 static const struct file_operations fmr2_fops = {
 	.owner          = THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = fmr2_exclusive_open,
+	.release        = fmr2_exclusive_release,
 	.ioctl          = video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
diff --git a/drivers/media/radio/radio-terratec.c b/drivers/media/radio/radio-terratec.c
index 0876fec..eed1497 100644
--- a/drivers/media/radio/radio-terratec.c
+++ b/drivers/media/radio/radio-terratec.c
@@ -79,6 +79,7 @@ static spinlock_t lock;
 
 struct tt_device
 {
+	unsigned long in_use;
 	int port;
 	int curvol;
 	unsigned long curfreq;
@@ -356,10 +357,21 @@ static int vidioc_s_audio(struct file *file, void *priv,
 
 static struct tt_device terratec_unit;
 
+static int terratec_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &terratec_unit.in_use) ? -EBUSY : 0;
+}
+
+static int terratec_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &terratec_unit.in_use);
+	return 0;
+}
+
 static const struct file_operations terratec_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = terratec_exclusive_open,
+	.release        = terratec_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
diff --git a/drivers/media/radio/radio-trust.c b/drivers/media/radio/radio-trust.c
index 1931619..dd0c425 100644
--- a/drivers/media/radio/radio-trust.c
+++ b/drivers/media/radio/radio-trust.c
@@ -78,6 +78,7 @@ static __u16 curtreble;
 static unsigned long curfreq;
 static int curstereo;
 static int curmute;
+static unsigned long in_use;
 
 /* i2c addresses */
 #define TDA7318_ADDR 0x88
@@ -336,10 +337,21 @@ static int vidioc_s_audio(struct file *file, void *priv,
 	return 0;
 }
 
+static int trust_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+}
+
+static int trust_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &in_use);
+	return 0;
+}
+
 static const struct file_operations trust_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = trust_exclusive_open,
+	.release        = trust_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
diff --git a/drivers/media/radio/radio-typhoon.c b/drivers/media/radio/radio-typhoon.c
index f8d62cf..8784685 100644
--- a/drivers/media/radio/radio-typhoon.c
+++ b/drivers/media/radio/radio-typhoon.c
@@ -79,7 +79,7 @@ static struct v4l2_queryctrl radio_qctrl[] = {
 #endif
 
 struct typhoon_device {
-	int users;
+	unsigned long in_use;
 	int iobase;
 	int curvol;
 	int muted;
@@ -334,10 +334,21 @@ static struct typhoon_device typhoon_unit =
 	.mutefreq	= CONFIG_RADIO_TYPHOON_MUTEFREQ,
 };
 
+static int typhoon_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &typhoon_unit.in_use) ? -EBUSY : 0;
+}
+
+static int typhoon_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &typhoon_unit.in_use);
+	return 0;
+}
+
 static const struct file_operations typhoon_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = typhoon_exclusive_open,
+	.release        = typhoon_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
@@ -447,8 +458,7 @@ static int __init typhoon_init(void)
 	}
 
 	typhoon_radio.priv = &typhoon_unit;
-	if (video_register_device(&typhoon_radio, VFL_TYPE_RADIO, radio_nr) == -1)
-	{
+	if (video_register_device(&typhoon_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
 		release_region(io, 8);
 		return -EINVAL;
 	}
diff --git a/drivers/media/radio/radio-zoltrix.c b/drivers/media/radio/radio-zoltrix.c
index 51d57ed..4d76e71 100644
--- a/drivers/media/radio/radio-zoltrix.c
+++ b/drivers/media/radio/radio-zoltrix.c
@@ -69,6 +69,7 @@ static int io = CONFIG_RADIO_ZOLTRIX_PORT;
 static int radio_nr = -1;
 
 struct zol_device {
+	unsigned long in_use;
 	int port;
 	int curvol;
 	unsigned long curfreq;
@@ -396,11 +397,22 @@ static int vidioc_s_audio(struct file *file, void *priv,
 
 static struct zol_device zoltrix_unit;
 
+static int zoltrix_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &zoltrix_unit.in_use) ? -EBUSY : 0;
+}
+
+static int zoltrix_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &zoltrix_unit.in_use);
+	return 0;
+}
+
 static const struct file_operations zoltrix_fops =
 {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = zoltrix_exclusive_open,
+	.release        = zoltrix_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,