V4L/DVB: dvb_demux: Don't use vmalloc at dvb_dmx_swfilter_packet

As dvb_dmx_swfilter_packet() is protected by a spinlock, it shouldn't sleep.
However, vmalloc() may call sleep. So, move the initialization of
dvb_demux::cnt_storage field to a better place.

Reviewed-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/dvb/dvb-core/dvb_demux.c b/drivers/media/dvb/dvb-core/dvb_demux.c
index a78408e76e7548a9b15a00344536c0393cf2f540..67f189b7aa1ffb79706d9bcd8fb10cd250dcd8c9 100644 (file)
--- a/drivers/media/dvb/dvb-core/dvb_demux.c
+++ b/drivers/media/dvb/dvb-core/dvb_demux.c
@@ -426,16 +426,7 @@ static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf)
                };
        };
 
-       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;
-               }
-
+       if (demux->cnt_storage) {
                /* check pkt counter */
                if (pid < MAX_PID) {
                        if (buf[1] & 0x80)
@@ -454,7 +445,6 @@ static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf)
                };
                /* end check */
        };
-no_dvb_demux_tscheck:
 
        list_for_each_entry(feed, &demux->feed_list, list_head) {
                if ((feed->pid != pid) && (feed->pid != 0x2000))
@@ -1258,6 +1248,13 @@ int dvb_dmx_init(struct dvb_demux *dvbdemux)
                dvbdemux->feed[i].index = i;
        }
 
+       if (dvb_demux_tscheck) {
+               dvbdemux->cnt_storage = vmalloc(MAX_PID + 1);
+
+               if (!dvbdemux->cnt_storage)
+                       printk(KERN_WARNING "Couldn't allocate memory for TS/TEI check. Disabling it\n");
+       }
+
        INIT_LIST_HEAD(&dvbdemux->frontend_list);
 
        for (i = 0; i < DMX_TS_PES_OTHER; i++) {