lib: nrf_modem: fixes for flash trace backend

[eivindj-nordic]

Fixes for trace flash backend.

This PR fixes an issue with the trace flash backend where there is a mismatch between the traces to read and the read trace data, such that the trace module will report that there is still trace data to read even though the backend is emptied.

[NordicBuilder]

CI Information

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Build number: 9

Inputs:

Sources:

sdk-nrf: PR head: 187e02380222aca97c2db8df3413f2847fd7f648

more details

sdk-nrf:

PR head: 187e02380222aca97c2db8df3413f2847fd7f648
merge base: 53bebe9d9bc0430f643812334b1411a0e20a38ad
target head (main): e1f2c6b39e074f9af97ad472e7d0e37cec84ea2b
Diff

Github labels

Enabled	Name	Description
	ci-disabled	Disable the ci execution
	ci-all-test	Run all of ci, no test spec filtering will be done
	ci-force-downstream	Force execution of downstream even if twister fails
	ci-run-twister	Force run twister
	ci-run-zephyr-twister	Force run zephyr twister

List of changed files detected by CI (2)

lib
│  ├── nrf_modem_lib
│  │  ├── nrf_modem_lib_trace.c
│  │  ├── trace_backends
│  │  │  ├── flash
│  │  │  │  │ flash.c

Outputs:

Toolchain

Version: add720b6d9
Build docker image: docker-dtr.nordicsemi.no/sw-production/ncs-build:add720b6d9_912848a074

Test Spec & Results: ✅ Success; ❌ Failure; 🟠 Queued; 🟡 Progress; ◻️ Skipped; ⚠️ Quarantine

• ◻️ Toolchain - Skipped: existing toolchain is used
• ✅ Build twister
  • sdk-nrf test count: 405
• ✅ Integration tests
  • ✅ test-fw-nrfconnect-nrf-iot_cloud
  • ✅ test-fw-nrfconnect-nrf-iot_zephyr_lwm2m
  • ✅ test-fw-nrfconnect-nrf-iot_samples
  • ✅ test-fw-nrfconnect-nrf-iot_lwm2m
  • ✅ test-fw-nrfconnect-nrf-iot_mosh
  • ⚠️ test-fw-nrfconnect-nrf-iot_serial_lte_modem

Disabled integration tests

• • desktop52_verification
  • doc-internal
  • test_ble_nrf_config
  • test-fw-nrfconnect-apps
  • test-fw-nrfconnect-ble_mesh
  • test-fw-nrfconnect-ble_samples
  • test-fw-nrfconnect-boot
  • test-fw-nrfconnect-chip
  • test-fw-nrfconnect-fem
  • test-fw-nrfconnect-nfc
  • test-fw-nrfconnect-nrf-iot_libmodem-nrf
  • test-fw-nrfconnect-nrf-iot_nrf_provisioning
  • test-fw-nrfconnect-nrf-iot_positioning
  • test-fw-nrfconnect-nrf-iot_thingy91
  • test-fw-nrfconnect-nrf_crypto
  • test-fw-nrfconnect-proprietary_esb
  • test-fw-nrfconnect-rpc
  • test-fw-nrfconnect-rs
  • test-fw-nrfconnect-tfm
  • test-fw-nrfconnect-thread
  • test-fw-nrfconnect-zigbee
  • test-low-level
  • test-sdk-audio
  • test-sdk-dfu
  • test-sdk-find-my
  • test-sdk-mcuboot
  • test-sdk-pmic-samples
  • test-sdk-sidewalk
  • test-sdk-wifi

Note: This message is automatically posted and updated by the CI

[eivindj-nordic]

Removing requirement for changelog entry as it is covered by #17682.

[NordicBuilder]

You can find the documentation preview for this PR at this link. It will be updated about 10 minutes after the documentation build succeeds.

Note: This comment is automatically posted by the Documentation Publishing GitHub Action.

[simensrostad]

LGTM, thanks