diff options
| author | Antti Seppälä <a.seppala+linux-dvb@gmail.com> | 2008-12-01 12:59:37 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-12-16 21:43:58 +0300 |
| commit | 11c6c7fb89a7526841eb4f294de631f3b8a31f10 (patch) | |
| tree | ecdcad336abd058adf8064691f03984d2685548e /drivers/media/dvb/b2c2/flexcop-i2c.c | |
| parent | 4b330bee66e88c94789d2eea250dd1fd454a645e (diff) | |
| download | linux-11c6c7fb89a7526841eb4f294de631f3b8a31f10.tar.xz | |
V4L/DVB (9781): [PATCH] Cablestar 2 I2C retries (fix CableStar2 support)
At some point the Flexcop driver was changed to support newer Flexcop cards.
These modifications however broke the detection of Cablestar 2 DVB-C cards.
The reason is that the earlier version of the driver used to retry
unsuccessful i2c operations. The demodulator of Cablestar 2 cards (stv0297)
seems to be very dependent on these retries and adding them back fixes
Cablestar detection.
This patch restores this behaviour for the CableStar2.
Signed-off-by: Antti Seppälä <a.seppala@gmail.com>
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/b2c2/flexcop-i2c.c')
| -rw-r--r-- | drivers/media/dvb/b2c2/flexcop-i2c.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/media/dvb/b2c2/flexcop-i2c.c b/drivers/media/dvb/b2c2/flexcop-i2c.c index 43a112ec6d44..f13783f08f0f 100644 --- a/drivers/media/dvb/b2c2/flexcop-i2c.c +++ b/drivers/media/dvb/b2c2/flexcop-i2c.c @@ -47,9 +47,13 @@ static int flexcop_i2c_read4(struct flexcop_i2c_adapter *i2c, int len = r100.tw_sm_c_100.total_bytes, /* remember total_bytes is buflen-1 */ ret; - r100.tw_sm_c_100.no_base_addr_ack_error = i2c->no_base_addr; ret = flexcop_i2c_operation(i2c->fc, &r100); if (ret != 0) { + deb_i2c("Retrying operation\n"); + r100.tw_sm_c_100.no_base_addr_ack_error = i2c->no_base_addr; + ret = flexcop_i2c_operation(i2c->fc, &r100); + } + if (ret != 0) { deb_i2c("read failed. %d\n", ret); return ret; } |