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uhd: Fix UmTRX tuning broken in commit 90f7a01d. 

Commit 90f7a01d lost "return" statement. We also should account the fact that
offset can be negative.
We should return the tuning request immediately after

Signed-off-by: Tom Tsou <tom.tsou@ettus.com>
This commit is contained in:
Alexander Chemeris 2015-06-20 00:05:51 +03:00 committed by Tom Tsou
parent e692ce986c
commit f3b9af65ed
1 changed files with 2 additions and 1 deletions
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3
Transceiver52M/UHDDevice.cpp
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@ -1114,7 +1114,7 @@ uhd::tune_request_t uhd_device::select_freq(double freq, size_t chan, bool tx)
uhd::tune_request_t treq(freq);
if (dev_type == UMTRX) {
if (offset > 0.0)
if (offset != 0.0)
return uhd::tune_request_t(freq, offset);
// Don't use DSP tuning, because LMS6002D PLL steps are small enough.
@ -1125,6 +1125,7 @@ uhd::tune_request_t uhd_device::select_freq(double freq, size_t chan, bool tx)
treq.rf_freq = freq;
treq.dsp_freq_policy = uhd::tune_request_t::POLICY_MANUAL;
treq.dsp_freq = 0.0;
return treq;
} else if (chans == 1) {
if (offset == 0.0)
return treq;