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path: root/drivers/media/video/cx231xx/cx231xx-cards.c
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Diffstat (limited to 'drivers/media/video/cx231xx/cx231xx-cards.c')
-rw-r--r--drivers/media/video/cx231xx/cx231xx-cards.c110
1 files changed, 41 insertions, 69 deletions
diff --git a/drivers/media/video/cx231xx/cx231xx-cards.c b/drivers/media/video/cx231xx/cx231xx-cards.c
index 53dae2a8272d..919ed77b32f2 100644
--- a/drivers/media/video/cx231xx/cx231xx-cards.c
+++ b/drivers/media/video/cx231xx/cx231xx-cards.c
@@ -843,25 +843,34 @@ void cx231xx_release_resources(struct cx231xx *dev)
cx231xx_remove_from_devlist(dev);
+ cx231xx_ir_exit(dev);
+
/* Release I2C buses */
cx231xx_dev_uninit(dev);
- cx231xx_ir_exit(dev);
+ /* delete v4l2 device */
+ v4l2_device_unregister(&dev->v4l2_dev);
usb_put_dev(dev->udev);
/* Mark device as unused */
- cx231xx_devused &= ~(1 << dev->devno);
+ clear_bit(dev->devno, &cx231xx_devused);
+
+ kfree(dev->video_mode.alt_max_pkt_size);
+ kfree(dev->vbi_mode.alt_max_pkt_size);
+ kfree(dev->sliced_cc_mode.alt_max_pkt_size);
+ kfree(dev->ts1_mode.alt_max_pkt_size);
+ kfree(dev);
+ dev = NULL;
}
/*
* cx231xx_init_dev()
* allocates and inits the device structs, registers i2c bus and v4l device
*/
-static int cx231xx_init_dev(struct cx231xx **devhandle, struct usb_device *udev,
+static int cx231xx_init_dev(struct cx231xx *dev, struct usb_device *udev,
int minor)
{
- struct cx231xx *dev = *devhandle;
int retval = -ENOMEM;
int errCode;
unsigned int maxh, maxw;
@@ -1016,7 +1025,6 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
int i, isoc_pipe = 0;
char *speed;
char descr[255] = "";
- struct usb_interface *lif = NULL;
struct usb_interface_assoc_descriptor *assoc_desc;
udev = usb_get_dev(interface_to_usbdev(interface));
@@ -1030,21 +1038,21 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
return -ENODEV;
/* Check to see next free device and mark as used */
- nr = find_first_zero_bit(&cx231xx_devused, CX231XX_MAXBOARDS);
- cx231xx_devused |= 1 << nr;
-
- if (nr >= CX231XX_MAXBOARDS) {
- cx231xx_err(DRIVER_NAME
- ": Supports only %i cx231xx boards.\n", CX231XX_MAXBOARDS);
- cx231xx_devused &= ~(1 << nr);
- return -ENOMEM;
- }
+ do {
+ nr = find_first_zero_bit(&cx231xx_devused, CX231XX_MAXBOARDS);
+ if (nr >= CX231XX_MAXBOARDS) {
+ /* No free device slots */
+ cx231xx_err(DRIVER_NAME ": Supports only %i devices.\n",
+ CX231XX_MAXBOARDS);
+ return -ENOMEM;
+ }
+ } while (test_and_set_bit(nr, &cx231xx_devused));
/* allocate memory for our device state and initialize it */
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (dev == NULL) {
cx231xx_err(DRIVER_NAME ": out of memory!\n");
- cx231xx_devused &= ~(1 << nr);
+ clear_bit(dev->devno, &cx231xx_devused);
return -ENOMEM;
}
@@ -1071,9 +1079,6 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
/* init CIR module TBD */
- /* store the current interface */
- lif = interface;
-
/*mode_tv: digital=1 or analog=0*/
dev->mode_tv = 0;
@@ -1113,9 +1118,6 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
le16_to_cpu(udev->descriptor.idProduct),
dev->max_iad_interface_count);
- /* store the interface 0 back */
- lif = udev->actconfig->interface[0];
-
/* increment interface count */
dev->interface_count++;
@@ -1126,7 +1128,7 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
if (assoc_desc->bFirstInterface != ifnum) {
cx231xx_err(DRIVER_NAME ": Not found "
"matching IAD interface\n");
- cx231xx_devused &= ~(1 << nr);
+ clear_bit(dev->devno, &cx231xx_devused);
kfree(dev);
dev = NULL;
return -ENODEV;
@@ -1135,7 +1137,7 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
cx231xx_info("registering interface %d\n", ifnum);
/* save our data pointer in this interface device */
- usb_set_intfdata(lif, dev);
+ usb_set_intfdata(interface, dev);
/*
* AV device initialization - only done at the last interface
@@ -1145,19 +1147,19 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
if (retval) {
cx231xx_errdev("v4l2_device_register failed\n");
- cx231xx_devused &= ~(1 << nr);
+ clear_bit(dev->devno, &cx231xx_devused);
kfree(dev);
dev = NULL;
return -EIO;
}
/* allocate device struct */
- retval = cx231xx_init_dev(&dev, udev, nr);
+ retval = cx231xx_init_dev(dev, udev, nr);
if (retval) {
- cx231xx_devused &= ~(1 << dev->devno);
+ clear_bit(dev->devno, &cx231xx_devused);
v4l2_device_unregister(&dev->v4l2_dev);
kfree(dev);
dev = NULL;
- usb_set_intfdata(lif, NULL);
+ usb_set_intfdata(interface, NULL);
return retval;
}
@@ -1178,7 +1180,7 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
if (dev->video_mode.alt_max_pkt_size == NULL) {
cx231xx_errdev("out of memory!\n");
- cx231xx_devused &= ~(1 << nr);
+ clear_bit(dev->devno, &cx231xx_devused);
v4l2_device_unregister(&dev->v4l2_dev);
kfree(dev);
dev = NULL;
@@ -1212,7 +1214,7 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
if (dev->vbi_mode.alt_max_pkt_size == NULL) {
cx231xx_errdev("out of memory!\n");
- cx231xx_devused &= ~(1 << nr);
+ clear_bit(dev->devno, &cx231xx_devused);
v4l2_device_unregister(&dev->v4l2_dev);
kfree(dev);
dev = NULL;
@@ -1247,7 +1249,7 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
if (dev->sliced_cc_mode.alt_max_pkt_size == NULL) {
cx231xx_errdev("out of memory!\n");
- cx231xx_devused &= ~(1 << nr);
+ clear_bit(dev->devno, &cx231xx_devused);
v4l2_device_unregister(&dev->v4l2_dev);
kfree(dev);
dev = NULL;
@@ -1283,7 +1285,7 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
if (dev->ts1_mode.alt_max_pkt_size == NULL) {
cx231xx_errdev("out of memory!\n");
- cx231xx_devused &= ~(1 << nr);
+ clear_bit(dev->devno, &cx231xx_devused);
v4l2_device_unregister(&dev->v4l2_dev);
kfree(dev);
dev = NULL;
@@ -1334,10 +1336,9 @@ static void cx231xx_usb_disconnect(struct usb_interface *interface)
if (!dev->udev)
return;
- flush_request_modules(dev);
+ dev->state |= DEV_DISCONNECTED;
- /* delete v4l2 device */
- v4l2_device_unregister(&dev->v4l2_dev);
+ flush_request_modules(dev);
/* wait until all current v4l2 io is finished then deallocate
resources */
@@ -1351,31 +1352,24 @@ static void cx231xx_usb_disconnect(struct usb_interface *interface)
"deallocation are deferred on close.\n",
video_device_node_name(dev->vdev));
- dev->state |= DEV_MISCONFIGURED;
+ /* Even having users, it is safe to remove the RC i2c driver */
+ cx231xx_ir_exit(dev);
+
if (dev->USE_ISO)
cx231xx_uninit_isoc(dev);
else
cx231xx_uninit_bulk(dev);
- dev->state |= DEV_DISCONNECTED;
wake_up_interruptible(&dev->wait_frame);
wake_up_interruptible(&dev->wait_stream);
} else {
- dev->state |= DEV_DISCONNECTED;
- cx231xx_release_resources(dev);
}
cx231xx_close_extension(dev);
mutex_unlock(&dev->lock);
- if (!dev->users) {
- kfree(dev->video_mode.alt_max_pkt_size);
- kfree(dev->vbi_mode.alt_max_pkt_size);
- kfree(dev->sliced_cc_mode.alt_max_pkt_size);
- kfree(dev->ts1_mode.alt_max_pkt_size);
- kfree(dev);
- dev = NULL;
- }
+ if (!dev->users)
+ cx231xx_release_resources(dev);
}
static struct usb_driver cx231xx_usb_driver = {
@@ -1385,26 +1379,4 @@ static struct usb_driver cx231xx_usb_driver = {
.id_table = cx231xx_id_table,
};
-static int __init cx231xx_module_init(void)
-{
- int result;
-
- printk(KERN_INFO DRIVER_NAME " v4l2 driver loaded.\n");
-
- /* register this driver with the USB subsystem */
- result = usb_register(&cx231xx_usb_driver);
- if (result)
- cx231xx_err(DRIVER_NAME
- " usb_register failed. Error number %d.\n", result);
-
- return result;
-}
-
-static void __exit cx231xx_module_exit(void)
-{
- /* deregister this driver with the USB subsystem */
- usb_deregister(&cx231xx_usb_driver);
-}
-
-module_init(cx231xx_module_init);
-module_exit(cx231xx_module_exit);
+module_usb_driver(cx231xx_usb_driver);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-11 12:02:52 +0300