Yesterday, I used an old hardware to test a VB2 issue with DVB. On the tests, I noticed that some very old drivers don't play nice if either G_PROPERTY or GET_FRONTEND is called while the driver didn't lock. The driver simply overrides the tuning cache with some random data, causing tune to fail. This is wrong, and frontend drivers should be fixed with patches like this one: https://patchwork.linuxtv.org/patch/32813/ Yet, the core should be smarter to not let the driver to not tune due to such driver bugs. So, make the core more robust by passing a separate DTV properties struct to the drivers on get_frontend(). This way, if the driver updates it with bogus values, it won't interere with digital TV zig-zag routines. Please also notice that drivers may simply update the cache either at set_frontend(), at get_status() or via some driver kthread. This should work too with the new logic. Tested on my device with tda1004x with the fix reverted, and with the fix applied. Mauro Carvalho Chehab (7): [media] dvb_frontend: add props argument to dtv_get_frontend() [media] siano: remove get_frontend stub [media] friio-fe: remove get_frontend() callback [media] lgs8gxx: don't export get_frontend() callback [media] mb86a20s: get rid of dummy get_frontend() [media] dvb_frontend: pass the props cache to get_frontend() as arg [media] dvb_frontend: Don't let drivers to trash data at cache drivers/media/common/siano/smsdvb-main.c | 7 --- drivers/media/dvb-core/dvb_frontend.c | 55 +++++++++++++------- drivers/media/dvb-core/dvb_frontend.h | 3 +- drivers/media/dvb-frontends/af9013.c | 4 +- drivers/media/dvb-frontends/af9033.c | 4 +- drivers/media/dvb-frontends/as102_fe.c | 4 +- drivers/media/dvb-frontends/atbm8830.c | 4 +- drivers/media/dvb-frontends/au8522_dig.c | 4 +- drivers/media/dvb-frontends/cx22700.c | 4 +- drivers/media/dvb-frontends/cx22702.c | 4 +- drivers/media/dvb-frontends/cx24110.c | 4 +- drivers/media/dvb-frontends/cx24117.c | 4 +- drivers/media/dvb-frontends/cx24120.c | 4 +- drivers/media/dvb-frontends/cx24123.c | 4 +- drivers/media/dvb-frontends/cxd2820r_c.c | 4 +- drivers/media/dvb-frontends/cxd2820r_core.c | 9 ++-- drivers/media/dvb-frontends/cxd2820r_priv.h | 9 ++-- drivers/media/dvb-frontends/cxd2820r_t.c | 4 +- drivers/media/dvb-frontends/cxd2820r_t2.c | 6 +-- drivers/media/dvb-frontends/cxd2841er.c | 4 +- drivers/media/dvb-frontends/dib3000mb.c | 9 ++-- drivers/media/dvb-frontends/dib3000mc.c | 6 +-- drivers/media/dvb-frontends/dib7000m.c | 6 +-- drivers/media/dvb-frontends/dib7000p.c | 6 +-- drivers/media/dvb-frontends/dib8000.c | 75 ++++++++++++++------------- drivers/media/dvb-frontends/dib9000.c | 23 ++++---- drivers/media/dvb-frontends/dvb_dummy_fe.c | 7 ++- drivers/media/dvb-frontends/hd29l2.c | 4 +- drivers/media/dvb-frontends/l64781.c | 4 +- drivers/media/dvb-frontends/lg2160.c | 62 +++++++++++----------- drivers/media/dvb-frontends/lgdt3305.c | 4 +- drivers/media/dvb-frontends/lgdt3306a.c | 4 +- drivers/media/dvb-frontends/lgdt330x.c | 5 +- drivers/media/dvb-frontends/lgs8gl5.c | 5 +- drivers/media/dvb-frontends/lgs8gxx.c | 13 +---- drivers/media/dvb-frontends/m88ds3103.c | 4 +- drivers/media/dvb-frontends/m88rs2000.c | 5 +- drivers/media/dvb-frontends/mb86a20s.c | 11 ---- drivers/media/dvb-frontends/mt312.c | 4 +- drivers/media/dvb-frontends/mt352.c | 4 +- drivers/media/dvb-frontends/or51132.c | 4 +- drivers/media/dvb-frontends/rtl2830.c | 4 +- drivers/media/dvb-frontends/rtl2832.c | 4 +- drivers/media/dvb-frontends/s5h1409.c | 4 +- drivers/media/dvb-frontends/s5h1411.c | 4 +- drivers/media/dvb-frontends/s5h1420.c | 4 +- drivers/media/dvb-frontends/s921.c | 4 +- drivers/media/dvb-frontends/stb0899_drv.c | 4 +- drivers/media/dvb-frontends/stb6100.c | 2 +- drivers/media/dvb-frontends/stv0297.c | 4 +- drivers/media/dvb-frontends/stv0299.c | 4 +- drivers/media/dvb-frontends/stv0367.c | 8 +-- drivers/media/dvb-frontends/stv0900_core.c | 4 +- drivers/media/dvb-frontends/tc90522.c | 10 ++-- drivers/media/dvb-frontends/tda10021.c | 4 +- drivers/media/dvb-frontends/tda10023.c | 4 +- drivers/media/dvb-frontends/tda10048.c | 4 +- drivers/media/dvb-frontends/tda1004x.c | 4 +- drivers/media/dvb-frontends/tda10071.c | 4 +- drivers/media/dvb-frontends/tda10086.c | 4 +- drivers/media/dvb-frontends/tda8083.c | 4 +- drivers/media/dvb-frontends/ves1820.c | 4 +- drivers/media/dvb-frontends/ves1x93.c | 4 +- drivers/media/dvb-frontends/zl10353.c | 4 +- drivers/media/pci/bt8xx/dst.c | 4 +- drivers/media/usb/dvb-usb-v2/mxl111sf-demod.c | 4 +- drivers/media/usb/dvb-usb/af9005-fe.c | 4 +- drivers/media/usb/dvb-usb/dtt200u-fe.c | 5 +- drivers/media/usb/dvb-usb/friio-fe.c | 37 ++++++------- 69 files changed, 281 insertions(+), 283 deletions(-) -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
