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-rw-r--r--drivers/media/dvb/dvb-core/dvb_ca_en50221.c28
1 files changed, 16 insertions, 12 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_ca_en50221.c b/drivers/media/dvb/dvb-core/dvb_ca_en50221.c
index 8cbdb0ec67e..588fbe105c2 100644
--- 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;
}