V4L/DVB (11077): au0828: properly handle missing analog USB endpoint

Move the setup of the analog isoc handler into au0828-video.c, so it does not
occur if there is not an .input section defined for the board.  Also fixes a
case where if there is an input section but the board does not actually have
analog support, the digital support will continue to work as expected.

Thanks to Michael Krufky <mkrufky@linuxtv.org> for providing sample hardware
of various configurations to test with.

Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/au0828/au0828-core.c b/drivers/media/video/au0828/au0828-core.c
index f47fd9d..2b5ade6 100644 (file)
--- a/drivers/media/video/au0828/au0828-core.c
+++ b/drivers/media/video/au0828/au0828-core.c
@@ -165,11 +165,9 @@ static void au0828_usb_disconnect(struct usb_interface *interface)
 static int au0828_usb_probe(struct usb_interface *interface,
        const struct usb_device_id *id)
 {
-       int ifnum, i;
+       int ifnum;
        struct au0828_dev *dev;
        struct usb_device *usbdev = interface_to_usbdev(interface);
-       struct usb_host_interface *iface_desc;
-       struct usb_endpoint_descriptor *endpoint;
 
        ifnum = interface->altsetting->desc.bInterfaceNumber;
 
@@ -194,30 +192,6 @@ static int au0828_usb_probe(struct usb_interface *interface,
 
        usb_set_intfdata(interface, dev);
 
-       /* set au0828 usb interface0 to as5 */
-       usb_set_interface(usbdev,
-                         interface->cur_altsetting->desc.bInterfaceNumber, 5);
-
-       /* Figure out which endpoint has the isoc interface */
-       iface_desc = interface->cur_altsetting;
-       for(i = 0; i < iface_desc->desc.bNumEndpoints; i++){
-               endpoint = &iface_desc->endpoint[i].desc;
-               if(((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
-                  ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_ISOC)){
-
-                       /* we find our isoc in endpoint */
-                       u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
-                       dev->max_pkt_size = (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
-                       dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
-               }
-       }
-       if(!(dev->isoc_in_endpointaddr)) {
-               printk("Could not locate isoc endpoint\n");
-               kfree(dev);
-               return -ENODEV;
-       }
-
-
        /* Power Up the bridge */
        au0828_write(dev, REG_600, 1 << 4);
 
@@ -232,7 +206,7 @@ static int au0828_usb_probe(struct usb_interface *interface,
 
        /* Analog TV */
        if (dev->board.input != NULL)
-               au0828_analog_register(dev);
+               au0828_analog_register(dev, interface);
 
        /* Digital TV */
        au0828_dvb_register(dev);

diff --git a/drivers/media/video/au0828/au0828-video.c b/drivers/media/video/au0828/au0828-video.c
index ce80882..4c77aeb 100644 (file)
--- a/drivers/media/video/au0828/au0828-video.c
+++ b/drivers/media/video/au0828/au0828-video.c
@@ -1618,12 +1618,43 @@ static const struct video_device au0828_video_template = {
 
 /**************************************************************************/
 
-int au0828_analog_register(struct au0828_dev *dev)
+int au0828_analog_register(struct au0828_dev *dev,
+                          struct usb_interface *interface)
 {
        int retval = -ENOMEM;
+       struct usb_host_interface *iface_desc;
+       struct usb_endpoint_descriptor *endpoint;
+       int i;
 
        dprintk(1, "au0828_analog_register called!\n");
 
+       /* set au0828 usb interface0 to as5 */
+       retval = usb_set_interface(dev->usbdev,
+                                  interface->cur_altsetting->desc.bInterfaceNumber, 5);
+       if (retval != 0) {
+               printk("Failure setting usb interface0 to as5\n");
+               return retval;
+       }
+
+       /* Figure out which endpoint has the isoc interface */
+       iface_desc = interface->cur_altsetting;
+       for(i = 0; i < iface_desc->desc.bNumEndpoints; i++){
+               endpoint = &iface_desc->endpoint[i].desc;
+               if(((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
+                  ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_ISOC)){
+
+                       /* we find our isoc in endpoint */
+                       u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
+                       dev->max_pkt_size = (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
+                       dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
+               }
+       }
+       if(!(dev->isoc_in_endpointaddr)) {
+               printk("Could not locate isoc endpoint\n");
+               kfree(dev);
+               return -ENODEV;
+       }
+
        init_waitqueue_head(&dev->open);
        spin_lock_init(&dev->slock);
        mutex_init(&dev->lock);

diff --git a/drivers/media/video/au0828/au0828.h b/drivers/media/video/au0828/au0828.h
index 2f48ec2..d2e54c8 100644 (file)
--- a/drivers/media/video/au0828/au0828.h
+++ b/drivers/media/video/au0828/au0828.h
@@ -273,7 +273,8 @@ extern void au0828_call_i2c_clients(struct au0828_dev *dev,
 
 /* ----------------------------------------------------------- */
 /* au0828-video.c */
-int au0828_analog_register(struct au0828_dev *dev);
+int au0828_analog_register(struct au0828_dev *dev,
+                          struct usb_interface *interface);
 int au0828_analog_stream_disable(struct au0828_dev *d);
 void au0828_analog_unregister(struct au0828_dev *dev);