[v2] stb0899: Fix slow and not locking DVB-S transponder(s)

  Another version of
http://patchwork.linuxtv.org/patch/6307
http://patchwork.linuxtv.org/patch/6510
which was superseded or rejected, but I don't know why.

In stb0899_status stb0899_check_data the first read of STB0899_VSTATUS
could read old (from previous search) status bits and the search fails
on a good frequency.

With the patch more transponder could be locked and locks about 2* faster.

Signed-off-by: Lutz Sammer <johns98@gmx.net>
---
 drivers/media/dvb/frontends/stb0899_algo.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
  

Em 29-09-2011 18:22, Lutz Sammer escreveu:
> Another version of
> http://patchwork.linuxtv.org/patch/6307
> http://patchwork.linuxtv.org/patch/6510
> which was superseded or rejected, but I don't know why.

Probably because of the same reason of this patch [1]:

patch -p1 -i patches/lmml_8023_v2_stb0899_fix_slow_and_not_locking_dvb_s_transponder_s.patch --dry-run -t -N
patching file drivers/media/dvb/frontends/stb0899_algo.c
Hunk #1 FAILED at 358.
1 out of 1 hunk FAILED -- saving rejects to file drivers/media/dvb/frontends/stb0899_algo.c.rej
 drivers/media/dvb/frontends/stb0899_algo.c |    1 +
 1 file changed, 1 insertion(+)

I'll mark this one as rejected, as it doesn't apply upstream[2].

[1] http://patchwork.linuxtv.org/patch/8023/
[2] at tree/branch: git://linuxtv.org/media_tree.git staging/for_v3.2

Please test if the changes made upstream to solve a similar trouble fixes your issue. 
If not, please rebase your patch on the top of it and resend.

Thanks,
Mauro
> 
> In stb0899_status stb0899_check_data the first read of STB0899_VSTATUS
> could read old (from previous search) status bits and the search fails
> on a good frequency.
> 
> With the patch more transponder could be locked and locks about 2* faster.
> 
> Signed-off-by: Lutz Sammer <johns98@gmx.net>
> ---
>  drivers/media/dvb/frontends/stb0899_algo.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/media/dvb/frontends/stb0899_algo.c b/drivers/media/dvb/frontends/stb0899_algo.c
> index d70eee0..8eca419 100644
> --- a/drivers/media/dvb/frontends/stb0899_algo.c
> +++ b/drivers/media/dvb/frontends/stb0899_algo.c
> @@ -358,6 +358,7 @@ static enum stb0899_status stb0899_check_data(struct stb0899_state *state)
>         else
>                 dataTime = 500;
>  
> +       stb0899_read_reg(state, STB0899_VSTATUS); /* clear old status bits */
>         stb0899_write_reg(state, STB0899_DSTATUS2, 0x00); /* force search loop */
>         while (1) {
>                 /* WARNING! VIT LOCKED has to be tested before VIT_END_LOOOP   */

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