Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6

[pandora-kernel.git] / drivers / media / dvb / dvb-core / dvb_ca_en50221.c

diff --git a/drivers/media/dvb/dvb-core/dvb_ca_en50221.c b/drivers/media/dvb/dvb-core/dvb_ca_en50221.c
index 8cbdb0e..8e5dd7b 100644 (file)
--- a/drivers/media/dvb/dvb-core/dvb_ca_en50221.c
+++ b/drivers/media/dvb/dvb-core/dvb_ca_en50221.c
@@ -910,15 +910,21 @@ static void dvb_ca_en50221_thread_update_delay(struct dvb_ca_private *ca)
        int curdelay = 100000000;
        int slot;
 
+       /* Beware of too high polling frequency, because one polling
+        * call might take several hundred milliseconds until timeout!
+        */
        for (slot = 0; slot < ca->slot_count; slot++) {
                switch (ca->slot_info[slot].slot_state) {
                default:
                case DVB_CA_SLOTSTATE_NONE:
+                       delay = HZ * 60;  /* 60s */
+                       if (!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE))
+                               delay = HZ * 5;  /* 5s */
+                       break;
                case DVB_CA_SLOTSTATE_INVALID:
-                       delay = HZ * 60;
-                       if (!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE)) {
-                               delay = HZ / 10;
-                       }
+                       delay = HZ * 60;  /* 60s */
+                       if (!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE))
+                               delay = HZ / 10;  /* 100ms */
                        break;
 
                case DVB_CA_SLOTSTATE_UNINITIALISED:
@@ -926,19 +932,17 @@ static void dvb_ca_en50221_thread_update_delay(struct dvb_ca_private *ca)
                case DVB_CA_SLOTSTATE_VALIDATE:
                case DVB_CA_SLOTSTATE_WAITFR:
                case DVB_CA_SLOTSTATE_LINKINIT:
-                       delay = HZ / 10;
+                       delay = HZ / 10;  /* 100ms */
                        break;
 
                case DVB_CA_SLOTSTATE_RUNNING:
-                       delay = HZ * 60;
-                       if (!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE)) {
-                               delay = HZ / 10;
-                       }
+                       delay = HZ * 60;  /* 60s */
+                       if (!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE))
+                               delay = HZ / 10;  /* 100ms */
                        if (ca->open) {
                                if ((!ca->slot_info[slot].da_irq_supported) ||
-                                   (!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_DA))) {
-                                       delay = HZ / 10;
-                               }
+                                   (!(ca->flags & DVB_CA_EN50221_FLAG_IRQ_DA)))
+                                       delay = HZ / 10;  /* 100ms */
                        }
                        break;
                }
@@ -1353,7 +1357,7 @@ static int dvb_ca_en50221_io_read_condition(struct dvb_ca_private *ca,
 
                idx = dvb_ringbuffer_pkt_next(&ca->slot_info[slot].rx_buffer, -1, &fraglen);
                while (idx != -1) {
-                       dvb_ringbuffer_pkt_read(&ca->slot_info[slot].rx_buffer, idx, 0, hdr, 2, 0);
+                       dvb_ringbuffer_pkt_read(&ca->slot_info[slot].rx_buffer, idx, 0, hdr, 2);
                        if (connection_id == -1)
                                connection_id = hdr[0];
                        if ((hdr[0] == connection_id) && ((hdr[1] & 0x80) == 0)) {
@@ -1434,7 +1438,7 @@ static ssize_t dvb_ca_en50221_io_read(struct file *file, char __user * buf,
                        goto exit;
                }
 
-               dvb_ringbuffer_pkt_read(&ca->slot_info[slot].rx_buffer, idx, 0, hdr, 2, 0);
+               dvb_ringbuffer_pkt_read(&ca->slot_info[slot].rx_buffer, idx, 0, hdr, 2);
                if (connection_id == -1)
                        connection_id = hdr[0];
                if (hdr[0] == connection_id) {
@@ -1445,8 +1449,8 @@ static ssize_t dvb_ca_en50221_io_read(struct file *file, char __user * buf,
                                        fraglen -= 2;
                                }
 
-                               if ((status = dvb_ringbuffer_pkt_read(&ca->slot_info[slot].rx_buffer, idx, 2,
-                                                                     (u8 *)buf + pktlen, fraglen, 1)) < 0) {
+                               if ((status = dvb_ringbuffer_pkt_read_user(&ca->slot_info[slot].rx_buffer, idx, 2,
+                                                                     buf + pktlen, fraglen)) < 0) {
                                        goto exit;
                                }
                                pktlen += fraglen;