Fix typo in LST causing segfault

[ariostas]

There was a typo in #49734 that is causing a segfault when running standalone LST on GPU since a device view was being returned instead of a host one. Hopefully this can make it to pre2.

c.c @slava77

[cmsbuild]

cms-bot internal usage

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-50001/47817

[cmsbuild]

A new Pull Request was created by @ariostas for master.

It involves the following packages:

• RecoTracker/LSTCore (reconstruction)

@Moanwar, @cmsbuild, @jfernan2, @mandrenguyen, @srimanob can you please review it and eventually sign? Thanks.
@GiacomoSguazzoni, @VinInn, @VourMa, @dgulhan, @elusian, @felicepantaleo, @gpetruc, @mmasciov, @mmusich, @mtosi, @rovere this is something you requested to watch as well.
@ftenchini, @mandrenguyen, @sextonkennedy you are the release manager for this.

cms-bot commands are listed here

[Moanwar]

enable gpu

[Moanwar]

@cmsbuild please test

[cmsbuild]

-1

Failed Tests: RelVals-NVIDIA_H100
Size: This PR adds an extra 28KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-21de41/51047/summary.html
COMMIT: 18f5194
CMSSW: CMSSW_16_1_X_2026-02-02-1100/el8_amd64_gcc13
Additional Tests: GPU,AMD_MI300X,AMD_W7900,NVIDIA_H100,NVIDIA_L40S
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/50001/51047/install.sh to create a dev area with all the needed externals and cmssw changes.

Failed RelVals-NVIDIA_H100

• 34634.40334634.403_TTbar_14TeV+Run4D121PU_Patatrack_PixelOnlyAlpaka_Validation/step2_TTbar_14TeV+Run4D121PU_Patatrack_PixelOnlyAlpaka_Validation.log
• 34634.40234634.402_TTbar_14TeV+Run4D121PU_Patatrack_PixelOnlyAlpaka/step2_TTbar_14TeV+Run4D121PU_Patatrack_PixelOnlyAlpaka.log
• 34634.75134634.751_TTbar_14TeV+Run4D121PU_HLT75e33TimingAlpaka/step2_TTbar_14TeV+Run4D121PU_HLT75e33TimingAlpaka.log

Expand to see more relval errors ...

• 34634.704
• 34634.404

Comparison Summary

Summary:

• You potentially removed 3 lines from the logs
• Reco comparison results: 4 differences found in the comparisons
• DQMHistoTests: Total files compared: 54
• DQMHistoTests: Total histograms compared: 4261955
• DQMHistoTests: Total failures: 3
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 4261932
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 53 files compared)
• Checked 230 log files, 203 edm output root files, 54 DQM output files
• TriggerResults: no differences found

[ariostas]

Failed Tests: RelVals-NVIDIA_H100

Those failures are unrelated to this change.

[Moanwar]

ignore tests-rejected with ib-failure

[Moanwar]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs (test failures were overridden). This pull request will now be reviewed by the release team before it's merged. @sextonkennedy, @ftenchini, @mandrenguyen (and backports should be raised in the release meeting by the corresponding L2)