alloc: fix first free update in alloc_cont_blocks()

[bkokoszx]

In alloc_cont_blocks() function after allocation we should
check whether new first_free block has been already used.
If it was used, we should find first not used block.

fixes #1714

Signed-off-by: Bartosz Kokoszko bartoszx.kokoszko@linux.intel.com

[lgirdwood]

@fredoh9 @xiulipan CI false positive or issue ?

2019-09-16 08:58:23 UTC [REM_INFO]: read the topology pipleline from binary /lib/firmware/intel/sof-tplg/sof-hda-generic-4ch.tplg (4b06c398c1c2ed4a010480fdbbd59dde) ...
2019-09-16 08:58:23 UTC [REM_INFO]: Pipeline Found: {PCM=DMIC48kHz;ID=6;TYPE=capture;FMT=s16le;RATE_MIN=48000;RATE_MAX=48000;CH_MIN=4;CH_MAX=4}
2019-09-16 08:58:23 UTC [REM_INFO]: Pipeline Found: {PCM=DMIC16kHz;ID=7;TYPE=capture;FMT=s16le;RATE_MIN=16000;RATE_MAX=16000;CH_MIN=4;CH_MAX=4}
2019-09-16 08:58:23 UTC [REM_INFO]: Pipeline Found: {PCM=HDA_Analog;ID=0;TYPE=both;FMT=s16le;RATE_MIN=48000;RATE_MAX=48000;CH_MIN=2;CH_MAX=2}
2019-09-16 08:58:23 UTC [REM_INFO]: Pipeline Found: {PCM=HDA_Digital;ID=1;TYPE=both;FMT=s16le;RATE_MIN=48000;RATE_MAX=48000;CH_MIN=2;CH_MAX=2}
2019-09-16 08:58:23 UTC [REM_INFO]: Pipeline Found: {PCM=HDMI1;ID=3;TYPE=playback;FMT=s16le;RATE_MIN=48000;RATE_MAX=48000;CH_MIN=2;CH_MAX=2}
2019-09-16 08:58:23 UTC [REM_INFO]: Pipeline Found: {PCM=HDMI2;ID=4;TYPE=playback;FMT=s16le;RATE_MIN=48000;RATE_MAX=48000;CH_MIN=2;CH_MAX=2}
2019-09-16 08:58:23 UTC [REM_INFO]: Pipeline Found: {PCM=HDMI3;ID=5;TYPE=playback;FMT=s16le;RATE_MIN=48000;RATE_MAX=48000;CH_MIN=2;CH_MAX=2}
2019-09-16 08:58:23 UTC [REM_INFO]: Get playback list:
2019-09-16 08:58:23 UTC [REM_INFO]: Get capture list:
2019-09-16 08:58:23 UTC [REM_WARNING]: The /lib/firmware/intel/sof-tplg/sof-hda-generic-4ch.tplg doesn't match the loaded topology!
2019-09-16 08:58:28 UTC [REM_INFO]: === CASE FAILED ===

[wenqingfu]

@lgirdwood which test case did you get this "false positive" message? I cannot tell from your quote...

[wenqingfu]

@lgirdwood which test case did you get this "false positive" message? I cannot tell from your quote...

ok, I see. no, it's not a false negative case - the topology files says there are these PCMs but due to bios misalignment on this particular platform, SOF quit before creating these PCMs , thus it's a failed case. It's a known issue on the ICL RVP we use in CI so far.

[xiulipan]

@lrgirdwo @wenqingfu Yes, it is a known issue. The FW load is success but the machine driver load is failed due to hdmi codec probe failed.