linux/drivers/media/dvb
Robert Schedel 71a35fe2a3 V4L/DVB (7830): dvb_ca_en50221: Fix High CPU load in 'top' due to budget_av slot polling
This change addresses kernel bug #10459: In kernel 2.6.25 the
budget_av driver polls for an CI slot in 100ms intervals (because no
interrupt solution for budget_av cards is feasible due to HW reasons).
If no CI/CAM is connected to the DVB card, polling times out only after 250ms.
This periodic polling leads to high CPU load.

The change increases the polling interval for empty slots from 100ms to 5s.
Intervals for remaining slot states (invalid, in progress, ready) are unchanged,
as they are either temporary conditions or no timeout should occur.

Signed-off-by: Robert Schedel <r.schedel@yahoo.de>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-05-14 02:54:02 -03:00
..
b2c2 Rename common tuner Kconfig names to use the same 2008-04-29 18:41:38 -03:00
bt8xx Rename common tuner Kconfig names to use the same 2008-04-29 18:41:38 -03:00
cinergyT2 V4L/DVB (7538): Adds selectable adapter numbers as per module option 2008-04-24 14:08:00 -03:00
dvb-core V4L/DVB (7830): dvb_ca_en50221: Fix High CPU load in 'top' due to budget_av slot polling 2008-05-14 02:54:02 -03:00
dvb-usb Rename common tuner Kconfig names to use the same 2008-04-29 18:41:38 -03:00
frontends V4L/DVB (7783): drivers/media/dvb/frontends/s5h1420.c: printk fix 2008-04-29 18:41:41 -03:00
pluto2 V4L/DVB (7538): Adds selectable adapter numbers as per module option 2008-04-24 14:08:00 -03:00
ttpci V4L/DVB (7663): budget: Support for Activy budget card with BSBE1 tuner 2008-04-24 14:09:45 -03:00
ttusb-budget V4L/DVB (7662): stv0299: Fixed some typos 2008-04-24 14:09:45 -03:00
ttusb-dec V4L/DVB (7538): Adds selectable adapter numbers as per module option 2008-04-24 14:08:00 -03:00
Kconfig V4L/DVB(7767): Move tuners to common/tuners 2008-04-29 18:41:37 -03:00
Makefile