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media: hdpvr: Fix an error handling path in hdpvr_probe()

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Here, hdpvr_register_videodev() is responsible for setup and
register a video device. Also defining and initializing a worker.
hdpvr_register_videodev() is calling by hdpvr_probe at last.
So no need to flush any work here.
Unregister v4l2, free buffers and memory. If hdpvr_probe() will fail.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Arvind Yadav 2017-09-22 09:07:06 -04:00 committed by Mauro Carvalho Chehab
parent cee32edb23
commit c0f71bbb81
1 changed files with 15 additions and 11 deletions
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26
drivers/media/usb/hdpvr/hdpvr-core.c
View File

@ -292,7 +292,7 @@ static int hdpvr_probe(struct usb_interface *interface,
/* register v4l2_device early so it can be used for printks */
if (v4l2_device_register(&interface->dev, &dev->v4l2_dev)) {
dev_err(&interface->dev, "v4l2_device_register failed\n");
goto error;
goto error_free_dev;
}
mutex_init(&dev->io_mutex);
@ -301,7 +301,7 @@ static int hdpvr_probe(struct usb_interface *interface,
dev->usbc_buf = kmalloc(64, GFP_KERNEL);
if (!dev->usbc_buf) {
v4l2_err(&dev->v4l2_dev, "Out of memory\n");
goto error;
goto error_v4l2_unregister;
}
init_waitqueue_head(&dev->wait_buffer);
@ -339,13 +339,13 @@ static int hdpvr_probe(struct usb_interface *interface,
}
if (!dev->bulk_in_endpointAddr) {
v4l2_err(&dev->v4l2_dev, "Could not find bulk-in endpoint\n");
goto error;
goto error_put_usb;
}
/* init the device */
if (hdpvr_device_init(dev)) {
v4l2_err(&dev->v4l2_dev, "device init failed\n");
goto error;
goto error_put_usb;
}
mutex_lock(&dev->io_mutex);
@ -353,7 +353,7 @@ static int hdpvr_probe(struct usb_interface *interface,
mutex_unlock(&dev->io_mutex);
v4l2_err(&dev->v4l2_dev,
"allocating transfer buffers failed\n");
goto error;
goto error_put_usb;
}
mutex_unlock(&dev->io_mutex);
@ -361,7 +361,7 @@ static int hdpvr_probe(struct usb_interface *interface,
retval = hdpvr_register_i2c_adapter(dev);
if (retval < 0) {
v4l2_err(&dev->v4l2_dev, "i2c adapter register failed\n");
goto error;
goto error_free_buffers;
}
client = hdpvr_register_ir_rx_i2c(dev);
@ -394,13 +394,17 @@ static int hdpvr_probe(struct usb_interface *interface,
reg_fail:
#if IS_ENABLED(CONFIG_I2C)
i2c_del_adapter(&dev->i2c_adapter);
error_free_buffers:
#endif
hdpvr_free_buffers(dev);
error_put_usb:
usb_put_dev(dev->udev);
kfree(dev->usbc_buf);
error_v4l2_unregister:
v4l2_device_unregister(&dev->v4l2_dev);
error_free_dev:
kfree(dev);
error:
if (dev) {
flush_work(&dev->worker);
/* this frees allocated memory */
hdpvr_delete(dev);
}
return retval;
}