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b9eaf18722
linux-stable/drivers/media/usb/au0828/au0828-dvb.c
Kees Cook b9eaf18722 treewide: init_timer() -> setup_timer() 
This mechanically converts all remaining cases of ancient open-coded timer
setup with the old setup_timer() API, which is the first step in timer
conversions. This has no behavioral changes, since it ultimately just
changes the order of assignment to fields of struct timer_list when
finding variations of:

    init_timer(&t);
    f.function = timer_callback;
    t.data = timer_callback_arg;

to be converted into:

    setup_timer(&t, timer_callback, timer_callback_arg);

The conversion is done with the following Coccinelle script, which
is an improved version of scripts/cocci/api/setup_timer.cocci, in the
following ways:
 - assignments-before-init_timer() cases
 - limit the .data case removal to the specific struct timer_list instance
 - handling calls by dereference (timer->field vs timer.field)

spatch --very-quiet --all-includes --include-headers \
	-I ./arch/x86/include -I ./arch/x86/include/generated \
	-I ./include -I ./arch/x86/include/uapi \
	-I ./arch/x86/include/generated/uapi -I ./include/uapi \
	-I ./include/generated/uapi --include ./include/linux/kconfig.h \
	--dir . \
	--cocci-file ~/src/data/setup_timer.cocci

@fix_address_of@
expression e;
@@

 init_timer(
-&(e)
+&e
 , ...)

// Match the common cases first to avoid Coccinelle parsing loops with
// "... when" clauses.

@match_immediate_function_data_after_init_timer@
expression e, func, da;
@@

-init_timer
+setup_timer
 ( \(&e\|e\)
+, func, da
 );
(
-\(e.function\|e->function\) = func;
-\(e.data\|e->data\) = da;
|
-\(e.data\|e->data\) = da;
-\(e.function\|e->function\) = func;
)

@match_immediate_function_data_before_init_timer@
expression e, func, da;
@@

(
-\(e.function\|e->function\) = func;
-\(e.data\|e->data\) = da;
|
-\(e.data\|e->data\) = da;
-\(e.function\|e->function\) = func;
)
-init_timer
+setup_timer
 ( \(&e\|e\)
+, func, da
 );

@match_function_and_data_after_init_timer@
expression e, e2, e3, e4, e5, func, da;
@@

-init_timer
+setup_timer
 ( \(&e\|e\)
+, func, da
 );
 ... when != func = e2
     when != da = e3
(
-e.function = func;
... when != da = e4
-e.data = da;
|
-e->function = func;
... when != da = e4
-e->data = da;
|
-e.data = da;
... when != func = e5
-e.function = func;
|
-e->data = da;
... when != func = e5
-e->function = func;
)

@match_function_and_data_before_init_timer@
expression e, e2, e3, e4, e5, func, da;
@@
(
-e.function = func;
... when != da = e4
-e.data = da;
|
-e->function = func;
... when != da = e4
-e->data = da;
|
-e.data = da;
... when != func = e5
-e.function = func;
|
-e->data = da;
... when != func = e5
-e->function = func;
)
... when != func = e2
    when != da = e3
-init_timer
+setup_timer
 ( \(&e\|e\)
+, func, da
 );

@r1 exists@
expression t;
identifier f;
position p;
@@

f(...) { ... when any
  init_timer@p(\(&t\|t\))
  ... when any
}

@r2 exists@
expression r1.t;
identifier g != r1.f;
expression e8;
@@

g(...) { ... when any
  \(t.data\|t->data\) = e8
  ... when any
}

// It is dangerous to use setup_timer if data field is initialized
// in another function.
@script:python depends on r2@
p << r1.p;
@@

cocci.include_match(False)

@r3@
expression r1.t, func, e7;
position r1.p;
@@

(
-init_timer@p(&t);
+setup_timer(&t, func, 0UL);
... when != func = e7
-t.function = func;
|
-t.function = func;
... when != func = e7
-init_timer@p(&t);
+setup_timer(&t, func, 0UL);
|
-init_timer@p(t);
+setup_timer(t, func, 0UL);
... when != func = e7
-t->function = func;
|
-t->function = func;
... when != func = e7
-init_timer@p(t);
+setup_timer(t, func, 0UL);
)

Signed-off-by: Kees Cook <keescook@chromium.org>
2017-11-21 15:57:06 -08:00

696 lines
17 KiB
C
Raw Blame History

/*
* Driver for the Auvitek USB bridge
*
* Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
*
* GNU General Public License for more details.
*/
#include "au0828.h"
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/device.h>
#include <media/v4l2-common.h>
#include <media/tuner.h>
#include "au8522.h"
#include "xc5000.h"
#include "mxl5007t.h"
#include "tda18271.h"
static int preallocate_big_buffers;
module_param_named(preallocate_big_buffers, preallocate_big_buffers, int, 0644);
MODULE_PARM_DESC(preallocate_big_buffers, "Preallocate the larger transfer buffers at module load time");
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
#define _AU0828_BULKPIPE 0x83
#define _BULKPIPESIZE 0xe522
static u8 hauppauge_hvr950q_led_states[] = {
0x00, /* off */
0x02, /* yellow */
0x04, /* green */
};
static struct au8522_led_config hauppauge_hvr950q_led_cfg = {
.gpio_output = 0x00e0,
.gpio_output_enable = 0x6006,
.gpio_output_disable = 0x0660,
.gpio_leds = 0x00e2,
.led_states = hauppauge_hvr950q_led_states,
.num_led_states = sizeof(hauppauge_hvr950q_led_states),
.vsb8_strong = 20 /* dB */ * 10,
.qam64_strong = 25 /* dB */ * 10,
.qam256_strong = 32 /* dB */ * 10,
};
static struct au8522_config hauppauge_hvr950q_config = {
.demod_address = 0x8e >> 1,
.status_mode = AU8522_DEMODLOCKING,
.qam_if = AU8522_IF_6MHZ,
.vsb_if = AU8522_IF_6MHZ,
.led_cfg = &hauppauge_hvr950q_led_cfg,
};
static struct au8522_config fusionhdtv7usb_config = {
.demod_address = 0x8e >> 1,
.status_mode = AU8522_DEMODLOCKING,
.qam_if = AU8522_IF_6MHZ,
.vsb_if = AU8522_IF_6MHZ,
};
static struct au8522_config hauppauge_woodbury_config = {
.demod_address = 0x8e >> 1,
.status_mode = AU8522_DEMODLOCKING,
.qam_if = AU8522_IF_4MHZ,
.vsb_if = AU8522_IF_3_25MHZ,
};
static struct xc5000_config hauppauge_xc5000a_config = {
.i2c_address = 0x61,
.if_khz = 6000,
.chip_id = XC5000A,
.output_amp = 0x8f,
};
static struct xc5000_config hauppauge_xc5000c_config = {
.i2c_address = 0x61,
.if_khz = 6000,
.chip_id = XC5000C,
.output_amp = 0x8f,
};
static struct mxl5007t_config mxl5007t_hvr950q_config = {
.xtal_freq_hz = MxL_XTAL_24_MHZ,
.if_freq_hz = MxL_IF_6_MHZ,
};
static struct tda18271_config hauppauge_woodbury_tunerconfig = {
.gate = TDA18271_GATE_DIGITAL,
};
static void au0828_restart_dvb_streaming(struct work_struct *work);
static void au0828_bulk_timeout(unsigned long data)
{
struct au0828_dev *dev = (struct au0828_dev *) data;
dprintk(1, "%s called\n", __func__);
dev->bulk_timeout_running = 0;
schedule_work(&dev->restart_streaming);
}
/*-------------------------------------------------------------------*/
static void urb_completion(struct urb *purb)
{
struct au0828_dev *dev = purb->context;
int ptype = usb_pipetype(purb->pipe);
unsigned char *ptr;
dprintk(2, "%s: %d\n", __func__, purb->actual_length);
if (!dev) {
dprintk(2, "%s: no dev!\n", __func__);
return;
}
if (!dev->urb_streaming) {
dprintk(2, "%s: not streaming!\n", __func__);
return;
}
if (ptype != PIPE_BULK) {
pr_err("%s: Unsupported URB type %d\n",
__func__, ptype);
return;
}
/* See if the stream is corrupted (to work around a hardware
bug where the stream gets misaligned */
ptr = purb->transfer_buffer;
if (purb->actual_length > 0 && ptr[0] != 0x47) {
dprintk(1, "Need to restart streaming %02x len=%d!\n",
ptr[0], purb->actual_length);
schedule_work(&dev->restart_streaming);
return;
} else if (dev->bulk_timeout_running == 1) {
/* The URB handler has fired, so cancel timer which would
* restart endpoint if we hadn't
*/
dprintk(1, "%s cancelling bulk timeout\n", __func__);
dev->bulk_timeout_running = 0;
del_timer(&dev->bulk_timeout);
}
/* Feed the transport payload into the kernel demux */
dvb_dmx_swfilter_packets(&dev->dvb.demux,
purb->transfer_buffer, purb->actual_length / 188);
/* Clean the buffer before we requeue */
memset(purb->transfer_buffer, 0, URB_BUFSIZE);
/* Requeue URB */
usb_submit_urb(purb, GFP_ATOMIC);
}
static int stop_urb_transfer(struct au0828_dev *dev)
{
int i;
dprintk(2, "%s()\n", __func__);
if (!dev->urb_streaming)
return 0;
if (dev->bulk_timeout_running == 1) {
dev->bulk_timeout_running = 0;
del_timer(&dev->bulk_timeout);
}
dev->urb_streaming = false;
for (i = 0; i < URB_COUNT; i++) {
if (dev->urbs[i]) {
usb_kill_urb(dev->urbs[i]);
if (!preallocate_big_buffers)
kfree(dev->urbs[i]->transfer_buffer);
usb_free_urb(dev->urbs[i]);
}
}
return 0;
}
static int start_urb_transfer(struct au0828_dev *dev)
{
struct urb *purb;
int i, ret;
dprintk(2, "%s()\n", __func__);
if (dev->urb_streaming) {
dprintk(2, "%s: bulk xfer already running!\n", __func__);
return 0;
}
for (i = 0; i < URB_COUNT; i++) {
dev->urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
if (!dev->urbs[i])
return -ENOMEM;
purb = dev->urbs[i];
if (preallocate_big_buffers)
purb->transfer_buffer = dev->dig_transfer_buffer[i];
else
purb->transfer_buffer = kzalloc(URB_BUFSIZE,
GFP_KERNEL);
if (!purb->transfer_buffer) {
usb_free_urb(purb);
dev->urbs[i] = NULL;
ret = -ENOMEM;
pr_err("%s: failed big buffer allocation, err = %d\n",
__func__, ret);
return ret;
}
purb->status = -EINPROGRESS;
usb_fill_bulk_urb(purb,
dev->usbdev,
usb_rcvbulkpipe(dev->usbdev,
_AU0828_BULKPIPE),
purb->transfer_buffer,
URB_BUFSIZE,
urb_completion,
dev);
}
for (i = 0; i < URB_COUNT; i++) {
ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC);
if (ret != 0) {
stop_urb_transfer(dev);
pr_err("%s: failed urb submission, err = %d\n",
__func__, ret);
return ret;
}
}
dev->urb_streaming = true;
/* If we don't valid data within 1 second, restart stream */
mod_timer(&dev->bulk_timeout, jiffies + (HZ));
dev->bulk_timeout_running = 1;
return 0;
}
static void au0828_start_transport(struct au0828_dev *dev)
{
au0828_write(dev, 0x608, 0x90);
au0828_write(dev, 0x609, 0x72);
au0828_write(dev, 0x60a, 0x71);
au0828_write(dev, 0x60b, 0x01);
}
static void au0828_stop_transport(struct au0828_dev *dev, int full_stop)
{
if (full_stop) {
au0828_write(dev, 0x608, 0x00);
au0828_write(dev, 0x609, 0x00);
au0828_write(dev, 0x60a, 0x00);
}
au0828_write(dev, 0x60b, 0x00);
}
static int au0828_dvb_start_feed(struct dvb_demux_feed *feed)
{
struct dvb_demux *demux = feed->demux;
struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
struct au0828_dvb *dvb = &dev->dvb;
int ret = 0;
dprintk(1, "%s()\n", __func__);
if (!demux->dmx.frontend)
return -EINVAL;
if (dvb->frontend) {
mutex_lock(&dvb->lock);
dvb->start_count++;
dprintk(1, "%s(), start_count: %d, stop_count: %d\n", __func__,
dvb->start_count, dvb->stop_count);
if (dvb->feeding++ == 0) {
/* Start transport */
au0828_start_transport(dev);
ret = start_urb_transfer(dev);
if (ret < 0) {
au0828_stop_transport(dev, 0);
dvb->feeding--; /* We ran out of memory... */
}
}
mutex_unlock(&dvb->lock);
}
return ret;
}
static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed)
{
struct dvb_demux *demux = feed->demux;
struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
struct au0828_dvb *dvb = &dev->dvb;
int ret = 0;
dprintk(1, "%s()\n", __func__);
if (dvb->frontend) {
cancel_work_sync(&dev->restart_streaming);
mutex_lock(&dvb->lock);
dvb->stop_count++;
dprintk(1, "%s(), start_count: %d, stop_count: %d\n", __func__,
dvb->start_count, dvb->stop_count);
if (dvb->feeding > 0) {
dvb->feeding--;
if (dvb->feeding == 0) {
/* Stop transport */
ret = stop_urb_transfer(dev);
au0828_stop_transport(dev, 0);
}
}
mutex_unlock(&dvb->lock);
}
return ret;
}
static void au0828_restart_dvb_streaming(struct work_struct *work)
{
struct au0828_dev *dev = container_of(work, struct au0828_dev,
restart_streaming);
struct au0828_dvb *dvb = &dev->dvb;
if (!dev->urb_streaming)
return;
dprintk(1, "Restarting streaming...!\n");
mutex_lock(&dvb->lock);
/* Stop transport */
stop_urb_transfer(dev);
au0828_stop_transport(dev, 1);
/* Start transport */
au0828_start_transport(dev);
start_urb_transfer(dev);
mutex_unlock(&dvb->lock);
}
static int au0828_set_frontend(struct dvb_frontend *fe)
{
struct au0828_dev *dev = fe->dvb->priv;
struct au0828_dvb *dvb = &dev->dvb;
int ret, was_streaming;
mutex_lock(&dvb->lock);
was_streaming = dev->urb_streaming;
if (was_streaming) {
au0828_stop_transport(dev, 1);
/*
* We can't hold a mutex here, as the restart_streaming
* kthread may also hold it.
*/
mutex_unlock(&dvb->lock);
cancel_work_sync(&dev->restart_streaming);
mutex_lock(&dvb->lock);
stop_urb_transfer(dev);
}
mutex_unlock(&dvb->lock);
ret = dvb->set_frontend(fe);
if (was_streaming) {
mutex_lock(&dvb->lock);
au0828_start_transport(dev);
start_urb_transfer(dev);
mutex_unlock(&dvb->lock);
}
return ret;
}
static int dvb_register(struct au0828_dev *dev)
{
struct au0828_dvb *dvb = &dev->dvb;
int result;
dprintk(1, "%s()\n", __func__);
if (preallocate_big_buffers) {
int i;
for (i = 0; i < URB_COUNT; i++) {
dev->dig_transfer_buffer[i] = kzalloc(URB_BUFSIZE,
GFP_KERNEL);
if (!dev->dig_transfer_buffer[i]) {
result = -ENOMEM;
pr_err("failed buffer allocation (errno = %d)\n",
result);
goto fail_adapter;
}
}
}
INIT_WORK(&dev->restart_streaming, au0828_restart_dvb_streaming);
/* register adapter */
result = dvb_register_adapter(&dvb->adapter,
KBUILD_MODNAME, THIS_MODULE,
&dev->usbdev->dev, adapter_nr);
if (result < 0) {
pr_err("dvb_register_adapter failed (errno = %d)\n",
result);
goto fail_adapter;
}
#ifdef CONFIG_MEDIA_CONTROLLER_DVB
dvb->adapter.mdev = dev->media_dev;
#endif
dvb->adapter.priv = dev;
/* register frontend */
result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
if (result < 0) {
pr_err("dvb_register_frontend failed (errno = %d)\n",
result);
goto fail_frontend;
}
/* Hook dvb frontend */
dvb->set_frontend = dvb->frontend->ops.set_frontend;
dvb->frontend->ops.set_frontend = au0828_set_frontend;
/* register demux stuff */
dvb->demux.dmx.capabilities =
DMX_TS_FILTERING | DMX_SECTION_FILTERING |
DMX_MEMORY_BASED_FILTERING;
dvb->demux.priv = dev;
dvb->demux.filternum = 256;
dvb->demux.feednum = 256;
dvb->demux.start_feed = au0828_dvb_start_feed;
dvb->demux.stop_feed = au0828_dvb_stop_feed;
result = dvb_dmx_init(&dvb->demux);
if (result < 0) {
pr_err("dvb_dmx_init failed (errno = %d)\n", result);
goto fail_dmx;
}
dvb->dmxdev.filternum = 256;
dvb->dmxdev.demux = &dvb->demux.dmx;
dvb->dmxdev.capabilities = 0;
result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
if (result < 0) {
pr_err("dvb_dmxdev_init failed (errno = %d)\n", result);
goto fail_dmxdev;
}
dvb->fe_hw.source = DMX_FRONTEND_0;
result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
if (result < 0) {
pr_err("add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
result);
goto fail_fe_hw;
}
dvb->fe_mem.source = DMX_MEMORY_FE;
result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
if (result < 0) {
pr_err("add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
result);
goto fail_fe_mem;
}
result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
if (result < 0) {
pr_err("connect_frontend failed (errno = %d)\n", result);
goto fail_fe_conn;
}
/* register network adapter */
dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
dvb->start_count = 0;
dvb->stop_count = 0;
result = dvb_create_media_graph(&dvb->adapter, false);
if (result < 0)
goto fail_create_graph;
return 0;
fail_create_graph:
dvb_net_release(&dvb->net);
fail_fe_conn:
dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
fail_fe_mem:
dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
fail_fe_hw:
dvb_dmxdev_release(&dvb->dmxdev);
fail_dmxdev:
dvb_dmx_release(&dvb->demux);
fail_dmx:
dvb_unregister_frontend(dvb->frontend);
fail_frontend:
dvb_frontend_detach(dvb->frontend);
dvb_unregister_adapter(&dvb->adapter);
fail_adapter:
if (preallocate_big_buffers) {
int i;
for (i = 0; i < URB_COUNT; i++)
kfree(dev->dig_transfer_buffer[i]);
}
return result;
}
void au0828_dvb_unregister(struct au0828_dev *dev)
{
struct au0828_dvb *dvb = &dev->dvb;
dprintk(1, "%s()\n", __func__);
if (dvb->frontend == NULL)
return;
cancel_work_sync(&dev->restart_streaming);
dvb_net_release(&dvb->net);
dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
dvb_dmxdev_release(&dvb->dmxdev);
dvb_dmx_release(&dvb->demux);
dvb_unregister_frontend(dvb->frontend);
dvb_frontend_detach(dvb->frontend);
dvb_unregister_adapter(&dvb->adapter);
if (preallocate_big_buffers) {
int i;
for (i = 0; i < URB_COUNT; i++)
kfree(dev->dig_transfer_buffer[i]);
}
dvb->frontend = NULL;
}
/* All the DVB attach calls go here, this function get's modified
* for each new card. No other function in this file needs
* to change.
*/
int au0828_dvb_register(struct au0828_dev *dev)
{
struct au0828_dvb *dvb = &dev->dvb;
int ret;
dprintk(1, "%s()\n", __func__);
/* init frontend */
switch (dev->boardnr) {
case AU0828_BOARD_HAUPPAUGE_HVR850:
case AU0828_BOARD_HAUPPAUGE_HVR950Q:
dvb->frontend = dvb_attach(au8522_attach,
&hauppauge_hvr950q_config,
&dev->i2c_adap);
if (dvb->frontend != NULL)
switch (dev->board.tuner_type) {
default:
case TUNER_XC5000:
dvb_attach(xc5000_attach, dvb->frontend,
&dev->i2c_adap,
&hauppauge_xc5000a_config);
break;
case TUNER_XC5000C:
dvb_attach(xc5000_attach, dvb->frontend,
&dev->i2c_adap,
&hauppauge_xc5000c_config);
break;
}
break;
case AU0828_BOARD_HAUPPAUGE_HVR950Q_MXL:
dvb->frontend = dvb_attach(au8522_attach,
&hauppauge_hvr950q_config,
&dev->i2c_adap);
if (dvb->frontend != NULL)
dvb_attach(mxl5007t_attach, dvb->frontend,
&dev->i2c_adap, 0x60,
&mxl5007t_hvr950q_config);
break;
case AU0828_BOARD_HAUPPAUGE_WOODBURY:
dvb->frontend = dvb_attach(au8522_attach,
&hauppauge_woodbury_config,
&dev->i2c_adap);
if (dvb->frontend != NULL)
dvb_attach(tda18271_attach, dvb->frontend,
0x60, &dev->i2c_adap,
&hauppauge_woodbury_tunerconfig);
break;
case AU0828_BOARD_DVICO_FUSIONHDTV7:
dvb->frontend = dvb_attach(au8522_attach,
&fusionhdtv7usb_config,
&dev->i2c_adap);
if (dvb->frontend != NULL) {
dvb_attach(xc5000_attach, dvb->frontend,
&dev->i2c_adap,
&hauppauge_xc5000a_config);
}
break;
default:
pr_warn("The frontend of your DVB/ATSC card isn't supported yet\n");
break;
}
if (NULL == dvb->frontend) {
pr_err("%s() Frontend initialization failed\n",
__func__);
return -1;
}
/* define general-purpose callback pointer */
dvb->frontend->callback = au0828_tuner_callback;
/* register everything */
ret = dvb_register(dev);
if (ret < 0) {
if (dvb->frontend->ops.release)
dvb->frontend->ops.release(dvb->frontend);
dvb->frontend = NULL;
return ret;
}
setup_timer(&dev->bulk_timeout, au0828_bulk_timeout,
(unsigned long)dev);
return 0;
}
void au0828_dvb_suspend(struct au0828_dev *dev)
{
struct au0828_dvb *dvb = &dev->dvb;
int rc;
if (dvb->frontend) {
if (dev->urb_streaming) {
cancel_work_sync(&dev->restart_streaming);
/* Stop transport */
mutex_lock(&dvb->lock);
stop_urb_transfer(dev);
au0828_stop_transport(dev, 1);
mutex_unlock(&dvb->lock);
dev->need_urb_start = true;
}
/* suspend frontend - does tuner and fe to sleep */
rc = dvb_frontend_suspend(dvb->frontend);
pr_info("au0828_dvb_suspend(): Suspending DVB fe %d\n", rc);
}
}
void au0828_dvb_resume(struct au0828_dev *dev)
{
struct au0828_dvb *dvb = &dev->dvb;
int rc;
if (dvb->frontend) {
/* resume frontend - does fe and tuner init */
rc = dvb_frontend_resume(dvb->frontend);
pr_info("au0828_dvb_resume(): Resuming DVB fe %d\n", rc);
if (dev->need_urb_start) {
/* Start transport */
mutex_lock(&dvb->lock);
au0828_start_transport(dev);
start_urb_transfer(dev);
mutex_unlock(&dvb->lock);
}
}
}
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