The main purpose of this patch is to move the call of em28xx_release_resources()
after the call of em28xx_close_extension().
This is necessary, because some resources might be needed/used by the extensions
fini() functions when they get closed.
Also mark the device as disconnected earlier in this function and unify the
em28xx_uninit_usb_xfer() calls for analog and digital mode.
Signed-off-by: Frank Schäfer <fschaefer....@googlemail.com>
---
drivers/media/usb/em28xx/em28xx-cards.c | 26 +++++++++++---------------
1 Datei geändert, 11 Zeilen hinzugefügt(+), 15 Zeilen entfernt(-)
diff --git a/drivers/media/usb/em28xx/em28xx-cards.c
b/drivers/media/usb/em28xx/em28xx-cards.c
index 8496a06..40c3e45 100644
--- a/drivers/media/usb/em28xx/em28xx-cards.c
+++ b/drivers/media/usb/em28xx/em28xx-cards.c
@@ -3478,6 +3478,8 @@ static void em28xx_usb_disconnect(struct usb_interface
*interface)
if (!dev)
return;
+ dev->disconnected = 1;
+
if (dev->is_audio_only) {
mutex_lock(&dev->lock);
em28xx_close_extension(dev);
@@ -3489,32 +3491,26 @@ static void em28xx_usb_disconnect(struct usb_interface
*interface)
flush_request_modules(dev);
- /* wait until all current v4l2 io is finished then deallocate
- resources */
mutex_lock(&dev->lock);
v4l2_device_disconnect(&dev->v4l2_dev);
if (dev->users) {
- em28xx_warn
- ("device %s is open! Deregistration and memory "
- "deallocation are deferred on close.\n",
- video_device_node_name(dev->vdev));
+ em28xx_warn("device %s is open! Deregistration and memory
deallocation are deferred on close.\n",
+ video_device_node_name(dev->vdev));
- em28xx_uninit_usb_xfer(dev, dev->mode);
- dev->disconnected = 1;
- } else {
- dev->disconnected = 1;
- em28xx_release_resources(dev);
+ em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
+ em28xx_uninit_usb_xfer(dev, EM28XX_DIGITAL_MODE);
}
- /* free DVB isoc buffers */
- em28xx_uninit_usb_xfer(dev, EM28XX_DIGITAL_MODE);
+ em28xx_close_extension(dev);
+ /* NOTE: must be called BEFORE the resources are released */
+
+ if (!dev->users)
+ em28xx_release_resources(dev);
mutex_unlock(&dev->lock);
- em28xx_close_extension(dev);
-
if (!dev->users) {
kfree(dev->alt_max_pkt_size_isoc);
kfree(dev);
--
1.7.10.4
--
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