From: Patrick Boettcher <pb@linuxtv.org> while investigating the QAM_128-issue with the stv0297-driver for the Cablestar (which is not the same as the one in dvb-kernel CVS, yet), I fixed it, not by increasing the timeout, but by disabling the corner-detection for QAM_128 and higher. This patch has been tested on dvb-kernel cvs, and has been reported to work by multiple users. Some cards still need timeout increase on top of this patch. This will be addressed later. Signed-off-by: Patrick Boettcher <pb@linuxtv.org> Signed-off-by: Michael Krufky <mkrufky@m1k.net> Signed-off-by: Johannes Stezenbach <js@linuxtv.org> Signed-off-by: Andrew Morton <akpm@osdl.org> --- drivers/media/dvb/frontends/stv0297.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletion(-) diff -puN drivers/media/dvb/frontends/stv0297.c~dvb-frontend-stv0297-qam128-tuning-improvement drivers/media/dvb/frontends/stv0297.c --- devel/drivers/media/dvb/frontends/stv0297.c~dvb-frontend-stv0297-qam128-tuning-improvement 2005-09-04 16:51:24.000000000 -0700 +++ devel-akpm/drivers/media/dvb/frontends/stv0297.c 2005-09-04 16:51:24.000000000 -0700 @@ -606,7 +606,13 @@ static int stv0297_set_frontend(struct d stv0297_set_inversion(state, inversion); /* kick off lock */ - stv0297_writereg_mask(state, 0x88, 0x08, 0x08); + /* Disable corner detection for higher QAMs */ + if (p->u.qam.modulation == QAM_128 || + p->u.qam.modulation == QAM_256) + stv0297_writereg_mask(state, 0x88, 0x08, 0x00); + else + stv0297_writereg_mask(state, 0x88, 0x08, 0x08); + stv0297_writereg_mask(state, 0x5a, 0x20, 0x00); stv0297_writereg_mask(state, 0x6a, 0x01, 0x01); stv0297_writereg_mask(state, 0x43, 0x40, 0x40); _