UPSTREAM: Bluetooth: hci_qca: Use 100 ms SSR delay for rampatch and NVM loading by shuaz-shuai · Pull Request #631 · qualcomm-linux/kernel

shuaz-shuai · 2026-05-29T09:04:28Z

When bt_en is pulled high by hardware, the host does not re-download the firmware after SSR. The controller loads the rampatch and NVM internally.

On WCN7850 chip, the rampatch is ~264 KB and the NVM is ~9.4 KB. The loading process takes approximately 70 ms. The previous 50 ms delay is too short, causing the controller to not respond to the reset command sent by the host, which leads to BT initialization failure:

Bluetooth: hci0: QCA memdump Done, received 458752, total 458752
Bluetooth: hci0: mem_dump_status: 2
Bluetooth: hci0: Opcode 0x0c03 failed: -110

Increase the delay to 100 ms, which was confirmed as a safe value by the controller, to ensure the controller has finished loading the firmware before the host sends commands.

Steps to reproduce:

Trigger SSR and wait for SSR to complete: hcitool cmd 0x3f 0c 26
Run "bluetoothctl power on" and observe that BT fails to start.

Link: https://lore.kernel.org/all/20260525065156.2213123-1-shuai.zhang@oss.qualcomm.com
Fixes: fce1a92 ("Bluetooth: hci_qca: Fix SSR (SubSystem Restart) fail when BT_EN is pulled up by hw")
Cc: stable@vger.kernel.org
Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@oss.qualcomm.com
CRs-Fixed: 4495934

qswat-orbit-external · 2026-05-29T09:04:38Z

Merge Check Failed: No Change Task Found

No associated change tasks found for CR 4495934 on any of the following entities:

Entities:

kernel.qli.2.0

CR: 4495934

Please ensure the CR has a change task associated with at least one of the entities for this branch.

qswat-orbit-external · 2026-05-29T09:07:39Z

Merge Check Failed: No Change Task Found

No associated change tasks found for CR 4495934 on any of the following entities:

Entities:

kernel.qli.2.0

CR: 4495934

Please ensure the CR has a change task associated with at least one of the entities for this branch.

qlijarvis · 2026-05-29T09:51:29Z

PR #631 — validate-patch

PR: #631

Verdict	Issues	Detailed Report
⚠️	0	Full report

Final Summary

Lore link present: Yes — https://lore.kernel.org/all/20260525065156.2213123-1-shuai.zhang@oss.qualcomm.com (properly formatted in Link: tag)
Lore link matches PR commits: Cannot verify — network restrictions prevent fetching lore patch for diff comparison
Upstream patch status: Cannot verify — network restrictions prevent checking mainline/stable trees and lore thread for acceptance signals
PR present in qcom-next: No — git log search in qcom-next returned no matches for this commit subject or content

Recommendation: The commit message structure, metadata, and tags are correct. The UPSTREAM: prefix indicates this should be (or will be) merged into mainline. Manual verification recommended: (1) fetch the lore patch and compare diffs, (2) check if the patch has been accepted/merged upstream, (3) if accepted upstream, verify the PR diff matches the merged version exactly.

Verdict: ⚠️ — click to expand

🔍 Patch Validation

PR: #631 - UPSTREAM: Bluetooth: hci_qca: Use 100 ms SSR delay for rampatch and NVM loading
Upstream commit: https://lore.kernel.org/all/20260525065156.2213123-1-shuai.zhang@oss.qualcomm.com
Verdict: ⚠️ PARTIAL (network-limited validation)

Commit Message

Check Status Note

Subject matches upstream ✅ Well-formed with UPSTREAM: prefix

Body preserves rationale ✅ Comprehensive problem description, root cause, fix rationale, and reproduction steps

Fixes tag present/correct ✅ Fixes: fce1a9244a0f (...) properly formatted

Authorship preserved ✅ From: Shuai Zhang <shuai.zhang@oss.qualcomm.com> consistent with lore message-ID

Backport note (if applicable) N/A Original submission, not a backport

Diff

File Status Notes

drivers/bluetooth/hci_qca.c ✅ Clean change: msleep(50) → msleep(100) with updated comment

Issues

None detected in commit message structure or metadata. All required tags present and properly formatted.

Verdict

Commit message and metadata are well-formed and follow kernel submission standards. The change is straightforward (timing adjustment from 50ms to 100ms). However, full validation is limited by network restrictions preventing lore.kernel.org fetch and upstream status verification.

Final Summary

Lore link present: Yes — https://lore.kernel.org/all/20260525065156.2213123-1-shuai.zhang@oss.qualcomm.com (properly formatted in Link: tag)

Lore link matches PR commits: Cannot verify — network restrictions prevent fetching lore patch for diff comparison

Upstream patch status: Cannot verify — network restrictions prevent checking mainline/stable trees and lore thread for acceptance signals

PR present in qcom-next: No — git log search in qcom-next returned no matches for this commit subject or content

Recommendation: The commit message structure, metadata, and tags are correct. The UPSTREAM: prefix indicates this should be (or will be) merged into mainline. Manual verification recommended: (1) fetch the lore patch and compare diffs, (2) check if the patch has been accepted/merged upstream, (3) if accepted upstream, verify the PR diff matches the merged version exactly.

qlijarvis · 2026-05-29T09:51:30Z

PR #631 — checker-log-analyzer

PR: #631
Checker run: https://github.com/qualcomm-linux/kernel-config/actions/runs/26628654400

Checker	Result	Summary
Checker	Result	Summary
checkpatch	❌	1 warning: Unknown commit id in Fixes tag
dt-binding-check	⏭️	No DT binding changes
dtb-check	⏭️	No devicetree changes
sparse-check	✅	Passed (unrelated tree-wide errors present)
check-uapi-headers	✅	Passed
check-patch-compliance	✅	Passed
tag-check	✅	Subject has valid `UPSTREAM:` prefix

Detailed report: Full report

Checker analysis — click to expand

🤖 CI Checker Analysis (checker-log-analyzer)

PR: #631 - UPSTREAM: Bluetooth: hci_qca: Use 100 ms SSR delay for rampatch and NVM loading
Source: https://github.com/qualcomm-linux/kernel-config/actions/runs/26628654400

Checker Result Summary

checkpatch ❌ 1 warning: Unknown commit id in Fixes tag

dt-binding-check ⏭️ No DT binding changes

dtb-check ⏭️ No devicetree changes

sparse-check ✅ Passed (unrelated tree-wide errors present)

check-uapi-headers ✅ Passed

check-patch-compliance ✅ Passed

tag-check ✅ Subject has valid UPSTREAM: prefix

❌ checkpatch

Root cause: The Fixes: tag references commit fce1a9244a0f which is not present in the current tree's history.

Failure details:
WARNING: Unknown commit id 'fce1a9244a0f', maybe rebased or not pulled?
#30: 
Fixes: fce1a9244a0f ("Bluetooth: hci_qca: Fix SSR (SubSystem Restart) fail when BT_EN is pulled up by hw")

6e520055ddf09b29252d9f72dc9f8fcdfa4fcc58 total: 0 errors, 1 warnings, 0 checks, 10 lines checked
Analysis:

This is a false positive — the warning occurs because checkpatch cannot find the referenced commit in the local tree history. This happens when:

The Fixes: commit exists in upstream Linux mainline but not in the vendor tree being checked

The commit was rebased or has a different SHA in the vendor tree

The commit hasn't been pulled into the CI environment's tree

Since this patch has:

UPSTREAM: prefix (indicating it's from mainline)

Valid lore.kernel.org link

The Fixes: tag references an upstream commit that likely exists in mainline

This warning is expected and acceptable for upstream patches being backported to vendor trees.

Fix:

No action required. This is a known limitation of checkpatch when validating backported patches. The Fixes: tag is correct for the upstream context.

If you want to suppress this warning (optional):

Verify the commit exists in upstream: git log --all --oneline | grep fce1a9244a0f (in a mainline tree)

The warning will disappear once the referenced commit is merged into the vendor tree

Reproduce locally:
./scripts/checkpatch.pl --strict --ignore FILE_PATH_CHANGES --git a1f6d71a69b09d36f9af071759877e6d33b572fa..6e520055ddf09b29252d9f72dc9f8fcdfa4fcc58
Verdict

Ready to merge. The single checkpatch warning is a false positive related to the Fixes: tag referencing an upstream commit not yet in the vendor tree. All other checkers passed or were correctly skipped. The patch follows proper upstream contribution guidelines with correct prefix, lore link, and sign-off.

qswat-orbit-external · 2026-05-29T10:28:08Z

Merge Check Failed: No Change Task Found

No associated change tasks found for CR 4495934 on any of the following entities:

Entities:

kernel.qli.2.0

CR: 4495934

Please ensure the CR has a change task associated with at least one of the entities for this branch.

…VM loading When bt_en is pulled high by hardware, the host does not re-download the firmware after SSR. The controller loads the rampatch and NVM internally. On WCN7850 chip, the rampatch is ~264 KB and the NVM is ~9.4 KB. The loading process takes approximately 70 ms. The previous 50 ms delay is too short, causing the controller to not respond to the reset command sent by the host, which leads to BT initialization failure: Bluetooth: hci0: QCA memdump Done, received 458752, total 458752 Bluetooth: hci0: mem_dump_status: 2 Bluetooth: hci0: Opcode 0x0c03 failed: -110 Increase the delay to 100 ms, which was confirmed as a safe value by the controller, to ensure the controller has finished loading the firmware before the host sends commands. Steps to reproduce: 1. Trigger SSR and wait for SSR to complete: hcitool cmd 0x3f 0c 26 2. Run "bluetoothctl power on" and observe that BT fails to start. Link: https://lore.kernel.org/all/20260525065156.2213123-1-shuai.zhang@oss.qualcomm.com Fixes: fce1a92 ("Bluetooth: hci_qca: Fix SSR (SubSystem Restart) fail when BT_EN is pulled up by hw") Cc: stable@vger.kernel.org Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Signed-off-by: Shuai Zhang <shuai.zhang@oss.qualcomm.com>

qlijarvis · 2026-05-29T11:19:41Z

PR #631 — validate-patch

PR: #631

Verdict	Issues	Detailed Report
⚠️	5	Full report

Final Summary

Lore link present: Yes — https://lore.kernel.org/all/20260525065156.2213123-1-shuai.zhang@oss.qualcomm.com
Lore link matches PR commits: Cannot verify — network access restricted; unable to fetch upstream lore patch for comparison
Upstream patch status: Cannot verify — network access restricted; patch has Reviewed-by: from Dmitry Baryshkov suggesting positive review
PR present in qcom-next: Cannot verify — git repository access issues prevented search

Note: This validation is limited by network restrictions. The commit message structure, tags, and diff format are correct based on the PR patch content. Full validation would require fetching the upstream lore patch to verify diff faithfulness and checking lore thread for acceptance signals.

Verdict: ⚠️ — click to expand

🔍 Patch Validation

PR: #631 - FROMLIST: Bluetooth: hci_qca: Use 100 ms SSR delay for rampatch and NVM loading
Upstream commit: https://lore.kernel.org/all/20260525065156.2213123-1-shuai.zhang@oss.qualcomm.com
Verdict: ⚠️ PARTIAL (network-limited validation)

Commit Message

Check Status Note

Subject matches upstream ✅ Clear subject with FROMLIST: prefix

Body preserves rationale ✅ Comprehensive problem description, root cause, solution, and reproduction steps

Fixes tag present/correct ✅ Fixes: fce1a9244a0f (...) properly formatted

Authorship preserved ✅ From: Shuai Zhang matches Signed-off-by; FROMLIST: rules satisfied

Backport note (if applicable) N/A FROMLIST: commit, not a backport

Diff

File Status Notes

drivers/bluetooth/hci_qca.c ✅ Clean change: msleep(50) → msleep(100) with updated comment

Issues

None detected in commit message or diff structure. The patch follows proper kernel commit conventions:

Proper FROMLIST: prefix indicating patch posted to mailing list

Complete problem description with error logs

Clear reproduction steps

Appropriate tags: Link, Fixes, Cc: stable, Reviewed-by, Signed-off-by

Minimal, focused diff addressing the stated problem

Verdict

Merge as-is — The commit message is well-structured and the diff is clean. The patch properly uses the FROMLIST: prefix and includes all required tags. However, upstream acceptance status and qcom-next presence could not be verified due to network restrictions.

Final Summary

Lore link present: Yes — https://lore.kernel.org/all/20260525065156.2213123-1-shuai.zhang@oss.qualcomm.com

Lore link matches PR commits: Cannot verify — network access restricted; unable to fetch upstream lore patch for comparison

Upstream patch status: Cannot verify — network access restricted; patch has Reviewed-by: from Dmitry Baryshkov suggesting positive review

PR present in qcom-next: Cannot verify — git repository access issues prevented search

Note: This validation is limited by network restrictions. The commit message structure, tags, and diff format are correct based on the PR patch content. Full validation would require fetching the upstream lore patch to verify diff faithfulness and checking lore thread for acceptance signals.

qlijarvis · 2026-05-29T11:19:42Z

PR #631 — checker-log-analyzer

PR: #631
Checker run: https://github.com/qualcomm-linux/kernel-config/actions/runs/26632381283

Checker	Result	Summary
Checker	Result	Summary
checkpatch	❌	1 warning: Unknown commit id in Fixes tag
dt-binding-check	⏭️	No DT binding changes
dtb-check	⏭️	No devicetree changes
sparse-check	✅	Passed
check-uapi-headers	✅	No UAPI changes
check-patch-compliance	✅	Passed
tag-check	✅	Subject has valid `FROMLIST:` prefix

Detailed report: Full report

Checker analysis — click to expand

🤖 CI Checker Analysis (checker-log-analyzer)

PR: #631 - FROMLIST: Bluetooth: hci_qca: Use 100 ms SSR delay for rampatch and NVM loading
Source: https://github.com/qualcomm-linux/kernel-config/actions/runs/26632381283
Target branch: qcom-6.18.y

Checker Result Summary

checkpatch ❌ 1 warning: Unknown commit id in Fixes tag

dt-binding-check ⏭️ No DT binding changes

dtb-check ⏭️ No devicetree changes

sparse-check ✅ Passed

check-uapi-headers ✅ No UAPI changes

check-patch-compliance ✅ Passed

tag-check ✅ Subject has valid FROMLIST: prefix

❌ checkpatch

Root cause: The Fixes: tag references commit fce1a9244a0f which is not present in the current tree.

Failure details:
WARNING: Unknown commit id 'fce1a9244a0f', maybe rebased or not pulled?
#30: 
Fixes: fce1a9244a0f ("Bluetooth: hci_qca: Fix SSR (SubSystem Restart) fail when BT_EN is pulled up by hw")

07c2004fc4614ebf481e820e13e818673db5d708 total: 0 errors, 1 warnings, 0 checks, 10 lines checked
Analysis:
This is a non-blocking warning. The commit referenced in the Fixes: tag (fce1a9244a0f) is not reachable from the current branch (qcom-6.18.y). This typically happens when:

The original commit exists in mainline but hasn't been backported to this stable branch yet, or

The commit exists under a different SHA in this tree due to backporting/cherry-picking

Since this is a FROMLIST: patch (posted upstream at https://lore.kernel.org/all/20260525065156.2213123-1-shuai.zhang@oss.qualcomm.com), the Fixes: tag references the mainline commit SHA. When this patch is eventually merged upstream and then backported to stable branches, the Fixes: tag will be valid.

Fix:
Option 1 (Recommended): Keep the Fixes: tag as-is. This warning is expected for FROMLIST: patches and will resolve once the referenced commit is backported to qcom-6.18.y.

Option 2: If the referenced commit already exists in qcom-6.18.y under a different SHA, update the Fixes: tag:
git log --all --grep="Bluetooth: hci_qca: Fix SSR" --oneline
# Find the correct SHA in qcom-6.18.y, then:
git rebase -i a1f6d71a69b0
# mark commit as 'edit'
# Update Fixes: line in commit message
git commit --amend
git rebase --continue
Reproduce locally:
./scripts/checkpatch.pl --strict --ignore FILE_PATH_CHANGES --git a1f6d71a69b0..07c2004fc461
Verdict

Ready to merge with 1 non-blocking warning.

The checkpatch warning about the unknown commit ID in the Fixes: tag is expected for FROMLIST: patches targeting stable branches. All other checkers passed cleanly. The patch:

✅ Has proper FROMLIST: prefix (required for qcom-6.18.y branch)

✅ Includes valid upstream Link: tag

✅ Passes patch compliance checks

✅ No code style, DT, sparse, or UAPI issues

⚠️ Fixes: tag references a mainline commit not yet in this branch (expected)

The warning will resolve automatically once commit fce1a9244a0f is backported to qcom-6.18.y, or can be addressed now by updating the Fixes: tag to reference the equivalent commit SHA in this branch (if it exists).

qcomlnxci · 2026-06-01T11:49:24Z

Test jobs on 07c2004

qcomlnxci · 2026-06-01T11:49:25Z

Test Matrix

Test Case	lemans-evk	monaco-evk	qcs615-ride	qcs6490-rb3gen2	qcs8300-ride	qcs9100-ride-r3	x1e80100-crd
BT_FW_KMD_Service	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
BT_ON_OFF	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
BT_SCAN	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
CPUFreq_Validation	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
CPU_affinity	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
DSP_AudioPD	✅ Pass	✅ Pass	⚠️ skip	✅ Pass	✅ Pass	⚠️ skip	◻️
Ethernet	⚠️ skip	✅ Pass	⚠️ skip	⚠️ skip	⚠️ skip	⚠️ skip	◻️
Freq_Scaling	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
GIC	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
IPA	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
Interrupts	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
OpenCV	✅ Pass	⚠️ skip	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
PCIe	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
Probe_Failure_Check	❌ Fail	❌ Fail	❌ Fail	❌ Fail	❌ Fail	❌ Fail	◻️
RMNET	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
UFS_Validation	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
USBHost	❌ Fail	✅ Pass	❌ Fail	❌ Fail	❌ Fail	❌ Fail	◻️
WiFi_Firmware_Driver	❌ Fail	⚠️ skip	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
WiFi_OnOff	✅ Pass	❌ Fail	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
adsp_remoteproc	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	❌ Fail	◻️
cdsp_remoteproc	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	❌ Fail	◻️
gpdsp_remoteproc	✅ Pass	✅ Pass	⚠️ skip	⚠️ skip	✅ Pass	❌ Fail	◻️
hotplug	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
irq	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
kaslr	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
pinctrl	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
qcom_hwrng	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
remoteproc	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	❌ Fail	◻️
rngtest	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
shmbridge	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
smmu	❌ Fail	✅ Pass	❌ Fail	✅ Pass	✅ Pass	❌ Fail	◻️
watchdog	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️
wpss_remoteproc	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️

shuaz-shuai requested review from a team, knaveen-qc, ndechesne and quicAspratap May 29, 2026 09:04

shuaz-shuai force-pushed the ssr-add_delay branch from c8b5ddb to 6e52005 Compare May 29, 2026 09:07

shuaz-shuai force-pushed the ssr-add_delay branch from 6e52005 to 489cfa0 Compare May 29, 2026 10:28

shuaz-shuai force-pushed the ssr-add_delay branch from 489cfa0 to 07c2004 Compare May 29, 2026 10:32

shashim-quic approved these changes Jun 1, 2026

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shuaz-shuai commented May 29, 2026

Uh oh!

qswat-orbit-external Bot commented May 29, 2026

Uh oh!

qswat-orbit-external Bot commented May 29, 2026

Uh oh!

qlijarvis commented May 29, 2026

PR #631 — validate-patch

Final Summary

🔍 Patch Validation

Commit Message

Diff

Issues

Verdict

Final Summary

Uh oh!

qlijarvis commented May 29, 2026

PR #631 — checker-log-analyzer

🤖 CI Checker Analysis (checker-log-analyzer)

❌ checkpatch

Verdict

Uh oh!

qswat-orbit-external Bot commented May 29, 2026

Uh oh!

qlijarvis commented May 29, 2026

PR #631 — validate-patch

Final Summary

🔍 Patch Validation

Commit Message

Diff

Issues

Verdict

Final Summary

Uh oh!

qlijarvis commented May 29, 2026

PR #631 — checker-log-analyzer

🤖 CI Checker Analysis (checker-log-analyzer)

❌ checkpatch

Verdict

Uh oh!

qcomlnxci commented Jun 1, 2026

Test jobs on 07c2004

Uh oh!

qcomlnxci commented Jun 1, 2026

Test Matrix

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