*
*/
+#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
*/
// #define DVB_DEMUX_SECTION_LOSS_LOG
+static int dvb_demux_tscheck;
+module_param(dvb_demux_tscheck, int, 0644);
+MODULE_PARM_DESC(dvb_demux_tscheck,
+ "enable transport stream continuity and TEI check");
-static LIST_HEAD(dmx_muxs);
-
-
-static int dmx_register_demux(struct dmx_demux *demux)
-{
- demux->users = 0;
- list_add(&demux->reg_list, &dmx_muxs);
- return 0;
-}
-
-static int dmx_unregister_demux(struct dmx_demux* demux)
-{
- struct list_head *pos, *n, *head=&dmx_muxs;
-
- list_for_each_safe (pos, n, head) {
- if (DMX_DIR_ENTRY(pos) == demux) {
- if (demux->users>0)
- return -EINVAL;
- list_del(pos);
- return 0;
- }
- }
-
- return -ENODEV;
-}
-
+#define dprintk_tscheck(x...) do { \
+ if (dvb_demux_tscheck && printk_ratelimit()) \
+ printk(x); \
+ } while (0)
/******************************************************************************
* static inlined helper functions
******************************************************************************/
-
static inline u16 section_length(const u8 *buf)
{
- return 3+((buf[1]&0x0f)<<8)+buf[2];
+ return 3 + ((buf[1] & 0x0f) << 8) + buf[2];
}
-
static inline u16 ts_pid(const u8 *buf)
{
- return ((buf[1]&0x1f)<<8)+buf[2];
+ return ((buf[1] & 0x1f) << 8) + buf[2];
}
-
static inline u8 payload(const u8 *tsp)
{
- if (!(tsp[3] & 0x10)) // no payload?
+ if (!(tsp[3] & 0x10)) // no payload?
return 0;
- if (tsp[3] & 0x20) { // adaptation field?
- if (tsp[4] > 183) // corrupted data?
+
+ if (tsp[3] & 0x20) { // adaptation field?
+ if (tsp[4] > 183) // corrupted data?
return 0;
else
- return 184-1-tsp[4];
+ return 184 - 1 - tsp[4];
}
+
return 184;
}
-
-static u32 dvb_dmx_crc32 (struct dvb_demux_feed *f, const u8 *src, size_t len)
+static u32 dvb_dmx_crc32(struct dvb_demux_feed *f, const u8 *src, size_t len)
{
- return (f->feed.sec.crc_val = crc32_be (f->feed.sec.crc_val, src, len));
+ return (f->feed.sec.crc_val = crc32_be(f->feed.sec.crc_val, src, len));
}
-
-static void dvb_dmx_memcopy (struct dvb_demux_feed *f, u8 *d, const u8 *s, size_t len)
+static void dvb_dmx_memcopy(struct dvb_demux_feed *f, u8 *d, const u8 *s,
+ size_t len)
{
- memcpy (d, s, len);
+ memcpy(d, s, len);
}
-
/******************************************************************************
* Software filter functions
******************************************************************************/
-static inline int dvb_dmx_swfilter_payload (struct dvb_demux_feed *feed, const u8 *buf)
+static inline int dvb_dmx_swfilter_payload(struct dvb_demux_feed *feed,
+ const u8 *buf)
{
int count = payload(buf);
int p;
if (count == 0)
return -1;
- p = 188-count;
+ p = 188 - count;
/*
- cc=buf[3]&0x0f;
- ccok=((dvbdmxfeed->cc+1)&0x0f)==cc ? 1 : 0;
- dvbdmxfeed->cc=cc;
+ cc = buf[3] & 0x0f;
+ ccok = ((feed->cc + 1) & 0x0f) == cc;
+ feed->cc = cc;
if (!ccok)
printk("missed packet!\n");
*/
- if (buf[1] & 0x40) // PUSI ?
+ if (buf[1] & 0x40) // PUSI ?
feed->peslen = 0xfffa;
feed->peslen += count;
- return feed->cb.ts (&buf[p], count, NULL, 0, &feed->feed.ts, DMX_OK);
+ return feed->cb.ts(&buf[p], count, NULL, 0, &feed->feed.ts, DMX_OK);
}
-
-static int dvb_dmx_swfilter_sectionfilter (struct dvb_demux_feed *feed,
- struct dvb_demux_filter *f)
+static int dvb_dmx_swfilter_sectionfilter(struct dvb_demux_feed *feed,
+ struct dvb_demux_filter *f)
{
u8 neq = 0;
int i;
- for (i=0; i<DVB_DEMUX_MASK_MAX; i++) {
+ for (i = 0; i < DVB_DEMUX_MASK_MAX; i++) {
u8 xor = f->filter.filter_value[i] ^ feed->feed.sec.secbuf[i];
if (f->maskandmode[i] & xor)
if (f->doneq && !neq)
return 0;
- return feed->cb.sec (feed->feed.sec.secbuf, feed->feed.sec.seclen,
- NULL, 0, &f->filter, DMX_OK);
+ return feed->cb.sec(feed->feed.sec.secbuf, feed->feed.sec.seclen,
+ NULL, 0, &f->filter, DMX_OK);
}
-
-static inline int dvb_dmx_swfilter_section_feed (struct dvb_demux_feed *feed)
+static inline int dvb_dmx_swfilter_section_feed(struct dvb_demux_feed *feed)
{
struct dvb_demux *demux = feed->demux;
struct dvb_demux_filter *f = feed->filter;
return 0;
}
-
static void dvb_dmx_swfilter_section_new(struct dvb_demux_feed *feed)
{
struct dmx_section_feed *sec = &feed->feed.sec;
#ifdef DVB_DEMUX_SECTION_LOSS_LOG
- if(sec->secbufp < sec->tsfeedp)
- {
+ if (sec->secbufp < sec->tsfeedp) {
int i, n = sec->tsfeedp - sec->secbufp;
- /* section padding is done with 0xff bytes entirely.
- ** due to speed reasons, we won't check all of them
- ** but just first and last
- */
- if(sec->secbuf[0] != 0xff || sec->secbuf[n-1] != 0xff)
- {
+ /*
+ * Section padding is done with 0xff bytes entirely.
+ * Due to speed reasons, we won't check all of them
+ * but just first and last.
+ */
+ if (sec->secbuf[0] != 0xff || sec->secbuf[n - 1] != 0xff) {
printk("dvb_demux.c section ts padding loss: %d/%d\n",
n, sec->tsfeedp);
printk("dvb_demux.c pad data:");
- for(i = 0; i < n; i++)
+ for (i = 0; i < n; i++)
printk(" %02x", sec->secbuf[i]);
printk("\n");
}
}
/*
-** Losless Section Demux 1.4.1 by Emard
-** Valsecchi Patrick:
-** - middle of section A (no PUSI)
-** - end of section A and start of section B
-** (with PUSI pointing to the start of the second section)
-**
-** In this case, without feed->pusi_seen you'll receive a garbage section
-** consisting of the end of section A. Basically because tsfeedp
-** is incemented and the use=0 condition is not raised
-** when the second packet arrives.
-**
-** Fix:
-** when demux is started, let feed->pusi_seen = 0 to
-** prevent initial feeding of garbage from the end of
-** previous section. When you for the first time see PUSI=1
-** then set feed->pusi_seen = 1
-*/
-static int dvb_dmx_swfilter_section_copy_dump(struct dvb_demux_feed *feed, const u8 *buf, u8 len)
+ * Losless Section Demux 1.4.1 by Emard
+ * Valsecchi Patrick:
+ * - middle of section A (no PUSI)
+ * - end of section A and start of section B
+ * (with PUSI pointing to the start of the second section)
+ *
+ * In this case, without feed->pusi_seen you'll receive a garbage section
+ * consisting of the end of section A. Basically because tsfeedp
+ * is incemented and the use=0 condition is not raised
+ * when the second packet arrives.
+ *
+ * Fix:
+ * when demux is started, let feed->pusi_seen = 0 to
+ * prevent initial feeding of garbage from the end of
+ * previous section. When you for the first time see PUSI=1
+ * then set feed->pusi_seen = 1
+ */
+static int dvb_dmx_swfilter_section_copy_dump(struct dvb_demux_feed *feed,
+ const u8 *buf, u8 len)
{
struct dvb_demux *demux = feed->demux;
struct dmx_section_feed *sec = &feed->feed.sec;
u16 limit, seclen, n;
- if(sec->tsfeedp >= DMX_MAX_SECFEED_SIZE)
+ if (sec->tsfeedp >= DMX_MAX_SECFEED_SIZE)
return 0;
- if(sec->tsfeedp + len > DMX_MAX_SECFEED_SIZE)
- {
+ if (sec->tsfeedp + len > DMX_MAX_SECFEED_SIZE) {
#ifdef DVB_DEMUX_SECTION_LOSS_LOG
printk("dvb_demux.c section buffer full loss: %d/%d\n",
- sec->tsfeedp + len - DMX_MAX_SECFEED_SIZE, DMX_MAX_SECFEED_SIZE);
+ sec->tsfeedp + len - DMX_MAX_SECFEED_SIZE,
+ DMX_MAX_SECFEED_SIZE);
#endif
len = DMX_MAX_SECFEED_SIZE - sec->tsfeedp;
}
- if(len <= 0)
+ if (len <= 0)
return 0;
demux->memcopy(feed, sec->secbuf_base + sec->tsfeedp, buf, len);
sec->tsfeedp += len;
- /* -----------------------------------------------------
- ** Dump all the sections we can find in the data (Emard)
- */
-
+ /*
+ * Dump all the sections we can find in the data (Emard)
+ */
limit = sec->tsfeedp;
- if(limit > DMX_MAX_SECFEED_SIZE)
- return -1; /* internal error should never happen */
+ if (limit > DMX_MAX_SECFEED_SIZE)
+ return -1; /* internal error should never happen */
/* to be sure always set secbuf */
sec->secbuf = sec->secbuf_base + sec->secbufp;
- for(n = 0; sec->secbufp + 2 < limit; n++)
- {
+ for (n = 0; sec->secbufp + 2 < limit; n++) {
seclen = section_length(sec->secbuf);
- if(seclen <= 0 || seclen > DMX_MAX_SECFEED_SIZE
- || seclen + sec->secbufp > limit)
+ if (seclen <= 0 || seclen > DMX_MAX_SECTION_SIZE
+ || seclen + sec->secbufp > limit)
return 0;
sec->seclen = seclen;
sec->crc_val = ~0;
/* dump [secbuf .. secbuf+seclen) */
- if(feed->pusi_seen)
+ if (feed->pusi_seen)
dvb_dmx_swfilter_section_feed(feed);
#ifdef DVB_DEMUX_SECTION_LOSS_LOG
else
printk("dvb_demux.c pusi not seen, discarding section data\n");
#endif
- sec->secbufp += seclen; /* secbufp and secbuf moving together is */
- sec->secbuf += seclen; /* redundand but saves pointer arithmetic */
+ sec->secbufp += seclen; /* secbufp and secbuf moving together is */
+ sec->secbuf += seclen; /* redundant but saves pointer arithmetic */
}
return 0;
}
-
-static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed, const u8 *buf)
+static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed,
+ const u8 *buf)
{
u8 p, count;
int ccok, dc_i = 0;
count = payload(buf);
- if (count == 0) /* count == 0 if no payload or out of range */
+ if (count == 0) /* count == 0 if no payload or out of range */
return -1;
- p = 188 - count; /* payload start */
+ p = 188 - count; /* payload start */
cc = buf[3] & 0x0f;
ccok = ((feed->cc + 1) & 0x0f) == cc;
if (!ccok || dc_i) {
#ifdef DVB_DEMUX_SECTION_LOSS_LOG
- printk("dvb_demux.c discontinuity detected %d bytes lost\n", count);
- /* those bytes under sume circumstances will again be reported
- ** in the following dvb_dmx_swfilter_section_new
- */
+ printk("dvb_demux.c discontinuity detected %d bytes lost\n",
+ count);
+ /*
+ * those bytes under sume circumstances will again be reported
+ * in the following dvb_dmx_swfilter_section_new
+ */
#endif
- /* Discontinuity detected. Reset pusi_seen = 0 to
- ** stop feeding of suspicious data until next PUSI=1 arrives
- */
+ /*
+ * Discontinuity detected. Reset pusi_seen = 0 to
+ * stop feeding of suspicious data until next PUSI=1 arrives
+ */
feed->pusi_seen = 0;
dvb_dmx_swfilter_section_new(feed);
}
if (buf[1] & 0x40) {
- // PUSI=1 (is set), section boundary is here
+ /* PUSI=1 (is set), section boundary is here */
if (count > 1 && buf[p] < count) {
- const u8 *before = buf+p+1;
+ const u8 *before = &buf[p + 1];
u8 before_len = buf[p];
- const u8 *after = before+before_len;
- u8 after_len = count-1-before_len;
+ const u8 *after = &before[before_len];
+ u8 after_len = count - 1 - before_len;
- dvb_dmx_swfilter_section_copy_dump(feed, before, before_len);
+ dvb_dmx_swfilter_section_copy_dump(feed, before,
+ before_len);
/* before start of new section, set pusi_seen = 1 */
feed->pusi_seen = 1;
dvb_dmx_swfilter_section_new(feed);
- dvb_dmx_swfilter_section_copy_dump(feed, after, after_len);
+ dvb_dmx_swfilter_section_copy_dump(feed, after,
+ after_len);
}
#ifdef DVB_DEMUX_SECTION_LOSS_LOG
- else
- if (count > 0)
- printk("dvb_demux.c PUSI=1 but %d bytes lost\n", count);
+ else if (count > 0)
+ printk("dvb_demux.c PUSI=1 but %d bytes lost\n", count);
#endif
} else {
- // PUSI=0 (is not set), no section boundary
- const u8 *entire = buf+p;
- u8 entire_len = count;
-
- dvb_dmx_swfilter_section_copy_dump(feed, entire, entire_len);
+ /* PUSI=0 (is not set), no section boundary */
+ dvb_dmx_swfilter_section_copy_dump(feed, &buf[p], count);
}
+
return 0;
}
-
-static inline void dvb_dmx_swfilter_packet_type(struct dvb_demux_feed *feed, const u8 *buf)
+static inline void dvb_dmx_swfilter_packet_type(struct dvb_demux_feed *feed,
+ const u8 *buf)
{
- switch(feed->type) {
+ switch (feed->type) {
case DMX_TYPE_TS:
if (!feed->feed.ts.is_filtering)
break;
if (feed->ts_type & TS_PAYLOAD_ONLY)
dvb_dmx_swfilter_payload(feed, buf);
else
- feed->cb.ts(buf, 188, NULL, 0, &feed->feed.ts, DMX_OK);
+ feed->cb.ts(buf, 188, NULL, 0, &feed->feed.ts,
+ DMX_OK);
}
if (feed->ts_type & TS_DECODER)
if (feed->demux->write_to_decoder)
if (!feed->feed.sec.is_filtering)
break;
if (dvb_dmx_swfilter_section_packet(feed, buf) < 0)
- feed->feed.sec.seclen = feed->feed.sec.secbufp=0;
+ feed->feed.sec.seclen = feed->feed.sec.secbufp = 0;
break;
default:
#define DVR_FEED(f) \
(((f)->type == DMX_TYPE_TS) && \
((f)->feed.ts.is_filtering) && \
- (((f)->ts_type & (TS_PACKET|TS_PAYLOAD_ONLY)) == TS_PACKET))
+ (((f)->ts_type & (TS_PACKET | TS_DEMUX)) == TS_PACKET))
static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf)
{
struct dvb_demux_feed *feed;
- struct list_head *pos, *head=&demux->feed_list;
u16 pid = ts_pid(buf);
int dvr_done = 0;
- list_for_each(pos, head) {
- feed = list_entry(pos, struct dvb_demux_feed, list_head);
+ if (dvb_demux_tscheck) {
+ if (!demux->cnt_storage)
+ demux->cnt_storage = vmalloc(MAX_PID + 1);
+ if (!demux->cnt_storage) {
+ printk(KERN_WARNING "Couldn't allocate memory for TS/TEI check. Disabling it\n");
+ dvb_demux_tscheck = 0;
+ goto no_dvb_demux_tscheck;
+ }
+
+ /* check pkt counter */
+ if (pid < MAX_PID) {
+ if (buf[1] & 0x80)
+ dprintk_tscheck("TEI detected. "
+ "PID=0x%x data1=0x%x\n",
+ pid, buf[1]);
+
+ if ((buf[3] & 0xf) != demux->cnt_storage[pid])
+ dprintk_tscheck("TS packet counter mismatch. "
+ "PID=0x%x expected 0x%x "
+ "got 0x%x\n",
+ pid, demux->cnt_storage[pid],
+ buf[3] & 0xf);
+
+ demux->cnt_storage[pid] = ((buf[3] & 0xf) + 1)&0xf;
+ };
+ /* end check */
+ };
+no_dvb_demux_tscheck:
+
+ list_for_each_entry(feed, &demux->feed_list, list_head) {
if ((feed->pid != pid) && (feed->pid != 0x2000))
continue;
if ((DVR_FEED(feed)) && (dvr_done++))
continue;
- if (feed->pid == pid) {
+ if (feed->pid == pid)
dvb_dmx_swfilter_packet_type(feed, buf);
- if (DVR_FEED(feed))
- continue;
- }
-
- if (feed->pid == 0x2000)
+ else if (feed->pid == 0x2000)
feed->cb.ts(buf, 188, NULL, 0, &feed->feed.ts, DMX_OK);
}
}
-void dvb_dmx_swfilter_packets(struct dvb_demux *demux, const u8 *buf, size_t count)
+void dvb_dmx_swfilter_packets(struct dvb_demux *demux, const u8 *buf,
+ size_t count)
{
spin_lock(&demux->lock);
while (count--) {
- if(buf[0] == 0x47) {
- dvb_dmx_swfilter_packet(demux, buf);
- }
+ if (buf[0] == 0x47)
+ dvb_dmx_swfilter_packet(demux, buf);
buf += 188;
}
spin_unlock(&demux->lock);
}
-EXPORT_SYMBOL(dvb_dmx_swfilter_packets);
+EXPORT_SYMBOL(dvb_dmx_swfilter_packets);
void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count)
{
spin_lock(&demux->lock);
- if ((i = demux->tsbufp)) {
- if (count < (j=188-i)) {
+ if (demux->tsbufp) {
+ i = demux->tsbufp;
+ j = 188 - i;
+ if (count < j) {
memcpy(&demux->tsbuf[i], buf, count);
demux->tsbufp += count;
goto bailout;
while (p < count) {
if (buf[p] == 0x47) {
- if (count-p >= 188) {
- dvb_dmx_swfilter_packet(demux, buf+p);
+ if (count - p >= 188) {
+ dvb_dmx_swfilter_packet(demux, &buf[p]);
p += 188;
} else {
- i = count-p;
- memcpy(demux->tsbuf, buf+p, i);
- demux->tsbufp=i;
+ i = count - p;
+ memcpy(demux->tsbuf, &buf[p], i);
+ demux->tsbufp = i;
goto bailout;
}
} else
bailout:
spin_unlock(&demux->lock);
}
+
EXPORT_SYMBOL(dvb_dmx_swfilter);
void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf, size_t count)
{
- int p = 0,i, j;
+ int p = 0, i, j;
u8 tmppack[188];
+
spin_lock(&demux->lock);
- if ((i = demux->tsbufp)) {
- if (count < (j=204-i)) {
+ if (demux->tsbufp) {
+ i = demux->tsbufp;
+ j = 204 - i;
+ if (count < j) {
memcpy(&demux->tsbuf[i], buf, count);
demux->tsbufp += count;
goto bailout;
}
memcpy(&demux->tsbuf[i], buf, j);
- if ((demux->tsbuf[0] == 0x47)|(demux->tsbuf[0]==0xB8)) {
+ if ((demux->tsbuf[0] == 0x47) || (demux->tsbuf[0] == 0xB8)) {
memcpy(tmppack, demux->tsbuf, 188);
- if (tmppack[0] == 0xB8) tmppack[0] = 0x47;
+ if (tmppack[0] == 0xB8)
+ tmppack[0] = 0x47;
dvb_dmx_swfilter_packet(demux, tmppack);
}
demux->tsbufp = 0;
}
while (p < count) {
- if ((buf[p] == 0x47)|(buf[p] == 0xB8)) {
- if (count-p >= 204) {
- memcpy(tmppack, buf+p, 188);
- if (tmppack[0] == 0xB8) tmppack[0] = 0x47;
+ if ((buf[p] == 0x47) || (buf[p] == 0xB8)) {
+ if (count - p >= 204) {
+ memcpy(tmppack, &buf[p], 188);
+ if (tmppack[0] == 0xB8)
+ tmppack[0] = 0x47;
dvb_dmx_swfilter_packet(demux, tmppack);
p += 204;
} else {
- i = count-p;
- memcpy(demux->tsbuf, buf+p, i);
- demux->tsbufp=i;
+ i = count - p;
+ memcpy(demux->tsbuf, &buf[p], i);
+ demux->tsbufp = i;
goto bailout;
}
} else {
bailout:
spin_unlock(&demux->lock);
}
-EXPORT_SYMBOL(dvb_dmx_swfilter_204);
+EXPORT_SYMBOL(dvb_dmx_swfilter_204);
-static struct dvb_demux_filter * dvb_dmx_filter_alloc(struct dvb_demux *demux)
+static struct dvb_demux_filter *dvb_dmx_filter_alloc(struct dvb_demux *demux)
{
int i;
- for (i=0; i<demux->filternum; i++)
+ for (i = 0; i < demux->filternum; i++)
if (demux->filter[i].state == DMX_STATE_FREE)
break;
return &demux->filter[i];
}
-static struct dvb_demux_feed * dvb_dmx_feed_alloc(struct dvb_demux *demux)
+static struct dvb_demux_feed *dvb_dmx_feed_alloc(struct dvb_demux *demux)
{
int i;
- for (i=0; i<demux->feednum; i++)
+ for (i = 0; i < demux->feednum; i++)
if (demux->feed[i].state == DMX_STATE_FREE)
break;
spin_lock_irq(&feed->demux->lock);
if (dvb_demux_feed_find(feed)) {
printk(KERN_ERR "%s: feed already in list (type=%x state=%x pid=%x)\n",
- __FUNCTION__, feed->type, feed->state, feed->pid);
+ __func__, feed->type, feed->state, feed->pid);
goto out;
}
spin_lock_irq(&feed->demux->lock);
if (!(dvb_demux_feed_find(feed))) {
printk(KERN_ERR "%s: feed not in list (type=%x state=%x pid=%x)\n",
- __FUNCTION__, feed->type, feed->state, feed->pid);
+ __func__, feed->type, feed->state, feed->pid);
goto out;
}
spin_unlock_irq(&feed->demux->lock);
}
-static int dmx_ts_feed_set (struct dmx_ts_feed* ts_feed, u16 pid, int ts_type,
- enum dmx_ts_pes pes_type, size_t callback_length,
- size_t circular_buffer_size, int descramble,
- struct timespec timeout)
+static int dmx_ts_feed_set(struct dmx_ts_feed *ts_feed, u16 pid, int ts_type,
+ enum dmx_ts_pes pes_type,
+ size_t circular_buffer_size, struct timespec timeout)
{
- struct dvb_demux_feed *feed = (struct dvb_demux_feed *) ts_feed;
+ struct dvb_demux_feed *feed = (struct dvb_demux_feed *)ts_feed;
struct dvb_demux *demux = feed->demux;
if (pid > DMX_MAX_PID)
return -EINVAL;
- if (down_interruptible (&demux->mutex))
+ if (mutex_lock_interruptible(&demux->mutex))
return -ERESTARTSYS;
if (ts_type & TS_DECODER) {
if (pes_type >= DMX_TS_PES_OTHER) {
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return -EINVAL;
}
if (demux->pesfilter[pes_type] &&
demux->pesfilter[pes_type] != feed) {
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return -EINVAL;
}
feed->pid = pid;
feed->buffer_size = circular_buffer_size;
- feed->descramble = descramble;
feed->timeout = timeout;
- feed->cb_length = callback_length;
feed->ts_type = ts_type;
feed->pes_type = pes_type;
- if (feed->descramble) {
- up(&demux->mutex);
- return -ENOSYS;
- }
-
if (feed->buffer_size) {
#ifdef NOBUFS
- feed->buffer=NULL;
+ feed->buffer = NULL;
#else
feed->buffer = vmalloc(feed->buffer_size);
if (!feed->buffer) {
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return -ENOMEM;
}
#endif
}
feed->state = DMX_STATE_READY;
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return 0;
}
-
-static int dmx_ts_feed_start_filtering(struct dmx_ts_feed* ts_feed)
+static int dmx_ts_feed_start_filtering(struct dmx_ts_feed *ts_feed)
{
- struct dvb_demux_feed *feed = (struct dvb_demux_feed *) ts_feed;
+ struct dvb_demux_feed *feed = (struct dvb_demux_feed *)ts_feed;
struct dvb_demux *demux = feed->demux;
int ret;
- if (down_interruptible (&demux->mutex))
+ if (mutex_lock_interruptible(&demux->mutex))
return -ERESTARTSYS;
if (feed->state != DMX_STATE_READY || feed->type != DMX_TYPE_TS) {
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return -EINVAL;
}
if (!demux->start_feed) {
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return -ENODEV;
}
if ((ret = demux->start_feed(feed)) < 0) {
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return ret;
}
ts_feed->is_filtering = 1;
feed->state = DMX_STATE_GO;
spin_unlock_irq(&demux->lock);
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return 0;
}
-static int dmx_ts_feed_stop_filtering(struct dmx_ts_feed* ts_feed)
+static int dmx_ts_feed_stop_filtering(struct dmx_ts_feed *ts_feed)
{
- struct dvb_demux_feed *feed = (struct dvb_demux_feed *) ts_feed;
+ struct dvb_demux_feed *feed = (struct dvb_demux_feed *)ts_feed;
struct dvb_demux *demux = feed->demux;
int ret;
- if (down_interruptible (&demux->mutex))
- return -ERESTARTSYS;
+ mutex_lock(&demux->mutex);
if (feed->state < DMX_STATE_GO) {
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return -EINVAL;
}
if (!demux->stop_feed) {
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return -ENODEV;
}
ts_feed->is_filtering = 0;
feed->state = DMX_STATE_ALLOCATED;
spin_unlock_irq(&demux->lock);
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return ret;
}
-static int dvbdmx_allocate_ts_feed (struct dmx_demux *dmx, struct dmx_ts_feed **ts_feed,
- dmx_ts_cb callback)
+static int dvbdmx_allocate_ts_feed(struct dmx_demux *dmx,
+ struct dmx_ts_feed **ts_feed,
+ dmx_ts_cb callback)
{
- struct dvb_demux *demux = (struct dvb_demux *) dmx;
+ struct dvb_demux *demux = (struct dvb_demux *)dmx;
struct dvb_demux_feed *feed;
- if (down_interruptible (&demux->mutex))
+ if (mutex_lock_interruptible(&demux->mutex))
return -ERESTARTSYS;
if (!(feed = dvb_dmx_feed_alloc(demux))) {
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return -EBUSY;
}
(*ts_feed)->stop_filtering = dmx_ts_feed_stop_filtering;
(*ts_feed)->set = dmx_ts_feed_set;
-
if (!(feed->filter = dvb_dmx_filter_alloc(demux))) {
feed->state = DMX_STATE_FREE;
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return -EBUSY;
}
feed->filter->feed = feed;
feed->filter->state = DMX_STATE_READY;
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return 0;
}
-static int dvbdmx_release_ts_feed(struct dmx_demux *dmx, struct dmx_ts_feed *ts_feed)
+static int dvbdmx_release_ts_feed(struct dmx_demux *dmx,
+ struct dmx_ts_feed *ts_feed)
{
- struct dvb_demux *demux = (struct dvb_demux *) dmx;
- struct dvb_demux_feed *feed = (struct dvb_demux_feed *) ts_feed;
+ struct dvb_demux *demux = (struct dvb_demux *)dmx;
+ struct dvb_demux_feed *feed = (struct dvb_demux_feed *)ts_feed;
- if (down_interruptible (&demux->mutex))
- return -ERESTARTSYS;
+ mutex_lock(&demux->mutex);
if (feed->state == DMX_STATE_FREE) {
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return -EINVAL;
}
-
#ifndef NOBUFS
vfree(feed->buffer);
- feed->buffer=0;
+ feed->buffer = NULL;
#endif
feed->state = DMX_STATE_FREE;
if (feed->ts_type & TS_DECODER && feed->pes_type < DMX_TS_PES_OTHER)
demux->pesfilter[feed->pes_type] = NULL;
- up(&demux->mutex);
+ mutex_unlock(&demux->mutex);
return 0;
}
-
/******************************************************************************
* dmx_section_feed API calls
******************************************************************************/
-static int dmx_section_feed_allocate_filter(struct dmx_section_feed* feed,
- struct dmx_section_filter** filter)
+static int dmx_section_feed_allocate_filter(struct dmx_section_feed *feed,
+ struct dmx_section_filter **filter)
{
- struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *) feed;
+ struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed;
struct dvb_demux *dvbdemux = dvbdmxfeed->demux;
struct dvb_demux_filter *dvbdmxfilter;
- if (down_interruptible (&dvbdemux->mutex))
+ if (mutex_lock_interruptible(&dvbdemux->mutex))
return -ERESTARTSYS;
dvbdmxfilter = dvb_dmx_filter_alloc(dvbdemux);
if (!dvbdmxfilter) {
- up(&dvbdemux->mutex);
+ mutex_unlock(&dvbdemux->mutex);
return -EBUSY;
}
dvbdmxfeed->filter = dvbdmxfilter;
spin_unlock_irq(&dvbdemux->lock);
- up(&dvbdemux->mutex);
+ mutex_unlock(&dvbdemux->mutex);
return 0;
}
-
-static int dmx_section_feed_set(struct dmx_section_feed* feed,
- u16 pid, size_t circular_buffer_size,
- int descramble, int check_crc)
+static int dmx_section_feed_set(struct dmx_section_feed *feed,
+ u16 pid, size_t circular_buffer_size,
+ int check_crc)
{
- struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *) feed;
+ struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed;
struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
if (pid > 0x1fff)
return -EINVAL;
- if (down_interruptible (&dvbdmx->mutex))
+ if (mutex_lock_interruptible(&dvbdmx->mutex))
return -ERESTARTSYS;
dvb_demux_feed_add(dvbdmxfeed);
dvbdmxfeed->pid = pid;
dvbdmxfeed->buffer_size = circular_buffer_size;
- dvbdmxfeed->descramble = descramble;
- if (dvbdmxfeed->descramble) {
- up(&dvbdmx->mutex);
- return -ENOSYS;
- }
-
dvbdmxfeed->feed.sec.check_crc = check_crc;
#ifdef NOBUFS
dvbdmxfeed->buffer = NULL;
#else
- dvbdmxfeed->buffer=vmalloc(dvbdmxfeed->buffer_size);
+ dvbdmxfeed->buffer = vmalloc(dvbdmxfeed->buffer_size);
if (!dvbdmxfeed->buffer) {
- up(&dvbdmx->mutex);
+ mutex_unlock(&dvbdmx->mutex);
return -ENOMEM;
}
#endif
dvbdmxfeed->state = DMX_STATE_READY;
- up(&dvbdmx->mutex);
+ mutex_unlock(&dvbdmx->mutex);
return 0;
}
-
static void prepare_secfilters(struct dvb_demux_feed *dvbdmxfeed)
{
int i;
struct dmx_section_filter *sf;
u8 mask, mode, doneq;
- if (!(f=dvbdmxfeed->filter))
+ if (!(f = dvbdmxfeed->filter))
return;
do {
sf = &f->filter;
doneq = 0;
- for (i=0; i<DVB_DEMUX_MASK_MAX; i++) {
+ for (i = 0; i < DVB_DEMUX_MASK_MAX; i++) {
mode = sf->filter_mode[i];
mask = sf->filter_mask[i];
f->maskandmode[i] = mask & mode;
} while ((f = f->next));
}
-
static int dmx_section_feed_start_filtering(struct dmx_section_feed *feed)
{
- struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *) feed;
+ struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed;
struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
int ret;
- if (down_interruptible (&dvbdmx->mutex))
+ if (mutex_lock_interruptible(&dvbdmx->mutex))
return -ERESTARTSYS;
if (feed->is_filtering) {
- up(&dvbdmx->mutex);
+ mutex_unlock(&dvbdmx->mutex);
return -EBUSY;
}
if (!dvbdmxfeed->filter) {
- up(&dvbdmx->mutex);
+ mutex_unlock(&dvbdmx->mutex);
return -EINVAL;
}
dvbdmxfeed->feed.sec.seclen = 0;
if (!dvbdmx->start_feed) {
- up(&dvbdmx->mutex);
+ mutex_unlock(&dvbdmx->mutex);
return -ENODEV;
}
prepare_secfilters(dvbdmxfeed);
if ((ret = dvbdmx->start_feed(dvbdmxfeed)) < 0) {
- up(&dvbdmx->mutex);
+ mutex_unlock(&dvbdmx->mutex);
return ret;
}
dvbdmxfeed->state = DMX_STATE_GO;
spin_unlock_irq(&dvbdmx->lock);
- up(&dvbdmx->mutex);
+ mutex_unlock(&dvbdmx->mutex);
return 0;
}
-
-static int dmx_section_feed_stop_filtering(struct dmx_section_feed* feed)
+static int dmx_section_feed_stop_filtering(struct dmx_section_feed *feed)
{
- struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *) feed;
+ struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed;
struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
int ret;
- if (down_interruptible (&dvbdmx->mutex))
- return -ERESTARTSYS;
+ mutex_lock(&dvbdmx->mutex);
if (!dvbdmx->stop_feed) {
- up(&dvbdmx->mutex);
+ mutex_unlock(&dvbdmx->mutex);
return -ENODEV;
}
feed->is_filtering = 0;
spin_unlock_irq(&dvbdmx->lock);
- up(&dvbdmx->mutex);
+ mutex_unlock(&dvbdmx->mutex);
return ret;
}
-
static int dmx_section_feed_release_filter(struct dmx_section_feed *feed,
- struct dmx_section_filter* filter)
+ struct dmx_section_filter *filter)
{
- struct dvb_demux_filter *dvbdmxfilter = (struct dvb_demux_filter *) filter, *f;
- struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *) feed;
+ struct dvb_demux_filter *dvbdmxfilter = (struct dvb_demux_filter *)filter, *f;
+ struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed;
struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
- if (down_interruptible (&dvbdmx->mutex))
- return -ERESTARTSYS;
+ mutex_lock(&dvbdmx->mutex);
if (dvbdmxfilter->feed != dvbdmxfeed) {
- up(&dvbdmx->mutex);
+ mutex_unlock(&dvbdmx->mutex);
return -EINVAL;
}
if (f == dvbdmxfilter) {
dvbdmxfeed->filter = dvbdmxfilter->next;
} else {
- while(f->next != dvbdmxfilter)
+ while (f->next != dvbdmxfilter)
f = f->next;
f->next = f->next->next;
}
dvbdmxfilter->state = DMX_STATE_FREE;
spin_unlock_irq(&dvbdmx->lock);
- up(&dvbdmx->mutex);
+ mutex_unlock(&dvbdmx->mutex);
return 0;
}
struct dmx_section_feed **feed,
dmx_section_cb callback)
{
- struct dvb_demux *dvbdmx = (struct dvb_demux *) demux;
+ struct dvb_demux *dvbdmx = (struct dvb_demux *)demux;
struct dvb_demux_feed *dvbdmxfeed;
- if (down_interruptible (&dvbdmx->mutex))
+ if (mutex_lock_interruptible(&dvbdmx->mutex))
return -ERESTARTSYS;
if (!(dvbdmxfeed = dvb_dmx_feed_alloc(dvbdmx))) {
- up(&dvbdmx->mutex);
+ mutex_unlock(&dvbdmx->mutex);
return -EBUSY;
}
dvbdmxfeed->filter = NULL;
dvbdmxfeed->buffer = NULL;
- (*feed)=&dvbdmxfeed->feed.sec;
+ (*feed) = &dvbdmxfeed->feed.sec;
(*feed)->is_filtering = 0;
(*feed)->parent = demux;
(*feed)->priv = NULL;
(*feed)->stop_filtering = dmx_section_feed_stop_filtering;
(*feed)->release_filter = dmx_section_feed_release_filter;
- up(&dvbdmx->mutex);
+ mutex_unlock(&dvbdmx->mutex);
return 0;
}
static int dvbdmx_release_section_feed(struct dmx_demux *demux,
struct dmx_section_feed *feed)
{
- struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *) feed;
- struct dvb_demux *dvbdmx = (struct dvb_demux *) demux;
+ struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed;
+ struct dvb_demux *dvbdmx = (struct dvb_demux *)demux;
- if (down_interruptible (&dvbdmx->mutex))
- return -ERESTARTSYS;
+ mutex_lock(&dvbdmx->mutex);
- if (dvbdmxfeed->state==DMX_STATE_FREE) {
- up(&dvbdmx->mutex);
+ if (dvbdmxfeed->state == DMX_STATE_FREE) {
+ mutex_unlock(&dvbdmx->mutex);
return -EINVAL;
}
#ifndef NOBUFS
vfree(dvbdmxfeed->buffer);
- dvbdmxfeed->buffer=0;
+ dvbdmxfeed->buffer = NULL;
#endif
- dvbdmxfeed->state=DMX_STATE_FREE;
+ dvbdmxfeed->state = DMX_STATE_FREE;
dvb_demux_feed_del(dvbdmxfeed);
dvbdmxfeed->pid = 0xffff;
- up(&dvbdmx->mutex);
+ mutex_unlock(&dvbdmx->mutex);
return 0;
}
-
/******************************************************************************
* dvb_demux kernel data API calls
******************************************************************************/
static int dvbdmx_open(struct dmx_demux *demux)
{
- struct dvb_demux *dvbdemux = (struct dvb_demux *) demux;
+ struct dvb_demux *dvbdemux = (struct dvb_demux *)demux;
if (dvbdemux->users >= MAX_DVB_DEMUX_USERS)
return -EUSERS;
return 0;
}
-
static int dvbdmx_close(struct dmx_demux *demux)
{
- struct dvb_demux *dvbdemux = (struct dvb_demux *) demux;
+ struct dvb_demux *dvbdemux = (struct dvb_demux *)demux;
if (dvbdemux->users == 0)
return -ENODEV;
return 0;
}
-
-static int dvbdmx_write(struct dmx_demux *demux, const char *buf, size_t count)
+static int dvbdmx_write(struct dmx_demux *demux, const char __user *buf, size_t count)
{
- struct dvb_demux *dvbdemux=(struct dvb_demux *) demux;
+ struct dvb_demux *dvbdemux = (struct dvb_demux *)demux;
+ void *p;
if ((!demux->frontend) || (demux->frontend->source != DMX_MEMORY_FE))
return -EINVAL;
- if (down_interruptible (&dvbdemux->mutex))
+ p = kmalloc(count, GFP_USER);
+ if (!p)
+ return -ENOMEM;
+ if (copy_from_user(p, buf, count)) {
+ kfree(p);
+ return -EFAULT;
+ }
+ if (mutex_lock_interruptible(&dvbdemux->mutex)) {
+ kfree(p);
return -ERESTARTSYS;
- dvb_dmx_swfilter(dvbdemux, buf, count);
- up(&dvbdemux->mutex);
+ }
+ dvb_dmx_swfilter(dvbdemux, p, count);
+ kfree(p);
+ mutex_unlock(&dvbdemux->mutex);
if (signal_pending(current))
return -EINTR;
return count;
}
-
-static int dvbdmx_add_frontend(struct dmx_demux *demux, struct dmx_frontend *frontend)
+static int dvbdmx_add_frontend(struct dmx_demux *demux,
+ struct dmx_frontend *frontend)
{
- struct dvb_demux *dvbdemux = (struct dvb_demux *) demux;
+ struct dvb_demux *dvbdemux = (struct dvb_demux *)demux;
struct list_head *head = &dvbdemux->frontend_list;
list_add(&(frontend->connectivity_list), head);
return 0;
}
-
-static int dvbdmx_remove_frontend(struct dmx_demux *demux, struct dmx_frontend *frontend)
+static int dvbdmx_remove_frontend(struct dmx_demux *demux,
+ struct dmx_frontend *frontend)
{
- struct dvb_demux *dvbdemux = (struct dvb_demux *) demux;
+ struct dvb_demux *dvbdemux = (struct dvb_demux *)demux;
struct list_head *pos, *n, *head = &dvbdemux->frontend_list;
- list_for_each_safe (pos, n, head) {
+ list_for_each_safe(pos, n, head) {
if (DMX_FE_ENTRY(pos) == frontend) {
list_del(pos);
return 0;
return -ENODEV;
}
-
-static struct list_head * dvbdmx_get_frontends(struct dmx_demux *demux)
+static struct list_head *dvbdmx_get_frontends(struct dmx_demux *demux)
{
- struct dvb_demux *dvbdemux = (struct dvb_demux *) demux;
+ struct dvb_demux *dvbdemux = (struct dvb_demux *)demux;
if (list_empty(&dvbdemux->frontend_list))
return NULL;
+
return &dvbdemux->frontend_list;
}
-
-static int dvbdmx_connect_frontend(struct dmx_demux *demux, struct dmx_frontend *frontend)
+static int dvbdmx_connect_frontend(struct dmx_demux *demux,
+ struct dmx_frontend *frontend)
{
- struct dvb_demux *dvbdemux = (struct dvb_demux *) demux;
+ struct dvb_demux *dvbdemux = (struct dvb_demux *)demux;
if (demux->frontend)
return -EINVAL;
- if (down_interruptible (&dvbdemux->mutex))
- return -ERESTARTSYS;
+ mutex_lock(&dvbdemux->mutex);
demux->frontend = frontend;
- up(&dvbdemux->mutex);
+ mutex_unlock(&dvbdemux->mutex);
return 0;
}
-
static int dvbdmx_disconnect_frontend(struct dmx_demux *demux)
{
- struct dvb_demux *dvbdemux = (struct dvb_demux *) demux;
+ struct dvb_demux *dvbdemux = (struct dvb_demux *)demux;
- if (down_interruptible (&dvbdemux->mutex))
- return -ERESTARTSYS;
+ mutex_lock(&dvbdemux->mutex);
demux->frontend = NULL;
- up(&dvbdemux->mutex);
+ mutex_unlock(&dvbdemux->mutex);
return 0;
}
-
-static int dvbdmx_get_pes_pids(struct dmx_demux *demux, u16 *pids)
+static int dvbdmx_get_pes_pids(struct dmx_demux *demux, u16 * pids)
{
- struct dvb_demux *dvbdemux = (struct dvb_demux *) demux;
+ struct dvb_demux *dvbdemux = (struct dvb_demux *)demux;
- memcpy(pids, dvbdemux->pids, 5*sizeof(u16));
+ memcpy(pids, dvbdemux->pids, 5 * sizeof(u16));
return 0;
}
-
int dvb_dmx_init(struct dvb_demux *dvbdemux)
{
- int i, err;
+ int i;
struct dmx_demux *dmx = &dvbdemux->dmx;
+ dvbdemux->cnt_storage = NULL;
dvbdemux->users = 0;
- dvbdemux->filter = vmalloc(dvbdemux->filternum*sizeof(struct dvb_demux_filter));
+ dvbdemux->filter = vmalloc(dvbdemux->filternum * sizeof(struct dvb_demux_filter));
if (!dvbdemux->filter)
return -ENOMEM;
- dvbdemux->feed = vmalloc(dvbdemux->feednum*sizeof(struct dvb_demux_feed));
+ dvbdemux->feed = vmalloc(dvbdemux->feednum * sizeof(struct dvb_demux_feed));
if (!dvbdemux->feed) {
vfree(dvbdemux->filter);
return -ENOMEM;
}
- for (i=0; i<dvbdemux->filternum; i++) {
+ for (i = 0; i < dvbdemux->filternum; i++) {
dvbdemux->filter[i].state = DMX_STATE_FREE;
dvbdemux->filter[i].index = i;
}
- for (i=0; i<dvbdemux->feednum; i++) {
+ for (i = 0; i < dvbdemux->feednum; i++) {
dvbdemux->feed[i].state = DMX_STATE_FREE;
dvbdemux->feed[i].index = i;
}
- dvbdemux->frontend_list.next=
- dvbdemux->frontend_list.prev=
- &dvbdemux->frontend_list;
- for (i=0; i<DMX_TS_PES_OTHER; i++) {
+
+ INIT_LIST_HEAD(&dvbdemux->frontend_list);
+
+ for (i = 0; i < DMX_TS_PES_OTHER; i++) {
dvbdemux->pesfilter[i] = NULL;
dvbdemux->pids[i] = 0xffff;
}
if (!dvbdemux->check_crc32)
dvbdemux->check_crc32 = dvb_dmx_crc32;
- if (!dvbdemux->memcopy)
- dvbdemux->memcopy = dvb_dmx_memcopy;
+ if (!dvbdemux->memcopy)
+ dvbdemux->memcopy = dvb_dmx_memcopy;
dmx->frontend = NULL;
- dmx->reg_list.prev = dmx->reg_list.next = &dmx->reg_list;
- dmx->priv = (void *) dvbdemux;
+ dmx->priv = dvbdemux;
dmx->open = dvbdmx_open;
dmx->close = dvbdmx_close;
dmx->write = dvbdmx_write;
dmx->allocate_section_feed = dvbdmx_allocate_section_feed;
dmx->release_section_feed = dvbdmx_release_section_feed;
- dmx->descramble_mac_address = NULL;
- dmx->descramble_section_payload = NULL;
-
dmx->add_frontend = dvbdmx_add_frontend;
dmx->remove_frontend = dvbdmx_remove_frontend;
dmx->get_frontends = dvbdmx_get_frontends;
dmx->disconnect_frontend = dvbdmx_disconnect_frontend;
dmx->get_pes_pids = dvbdmx_get_pes_pids;
- sema_init(&dvbdemux->mutex, 1);
+ mutex_init(&dvbdemux->mutex);
spin_lock_init(&dvbdemux->lock);
- if ((err = dmx_register_demux(dmx)) < 0)
- return err;
-
return 0;
}
-EXPORT_SYMBOL(dvb_dmx_init);
+EXPORT_SYMBOL(dvb_dmx_init);
-int dvb_dmx_release(struct dvb_demux *dvbdemux)
+void dvb_dmx_release(struct dvb_demux *dvbdemux)
{
- struct dmx_demux *dmx = &dvbdemux->dmx;
-
- dmx_unregister_demux(dmx);
+ vfree(dvbdemux->cnt_storage);
vfree(dvbdemux->filter);
vfree(dvbdemux->feed);
- return 0;
}
+
EXPORT_SYMBOL(dvb_dmx_release);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff