[v5,1/2] Bluetooth: qca: Fix BT enable failure for QCA_QCA6390

Commit Message

quic_zijuhu April 22, 2024, 7:38 a.m. UTC

Commit 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL()
with gpiod_get_optional()") will cause below serious regression issue:

BT can't be enabled any more after below steps:
cold boot -> enable BT -> disable BT -> BT enable failure
if property enable-gpios is not configured within DT|ACPI for QCA_QCA6390.

The commit wrongly changes flag @power_ctrl_enabled set logic for this
case as shown by its below code applet and causes this serious issue.
qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable",
                                               GPIOD_OUT_LOW);
- if (IS_ERR_OR_NULL(qcadev->bt_en)) {
+ if (IS_ERR(qcadev->bt_en)) {
  	dev_warn(&serdev->dev, "failed to acquire enable gpio\n");
	power_ctrl_enabled = false;
  }

Fixed by reverting the mentioned commit for QCA_QCA6390.

Fixes: 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()")
Reported-by: Wren Turkal <[e-mail]>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=218726
Link: https://lore.kernel.org/linux-bluetooth/[e-mail]/T/#m73d6a71d2f454bb03588c66f3ef7912274d37c6f
Signed-off-by: Zijun Hu <[e-mail]>
Tested-by: Wren Turkal <[e-mail]>
---
 drivers/bluetooth/hci_qca.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

[e-mail] April 22, 2024, 8:36 a.m. UTC | #1

This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=846527

---Test result---

Test Summary:
CheckPatch                    FAIL      1.59 seconds
GitLint                       FAIL      0.90 seconds
SubjectPrefix                 PASS      0.24 seconds
BuildKernel                   PASS      30.10 seconds
CheckAllWarning               PASS      32.58 seconds
CheckSparse                   PASS      38.41 seconds
CheckSmatch                   FAIL      36.09 seconds
BuildKernel32                 PASS      28.87 seconds
TestRunnerSetup               PASS      518.43 seconds
TestRunner_l2cap-tester       PASS      20.48 seconds
TestRunner_iso-tester         PASS      28.64 seconds
TestRunner_bnep-tester        PASS      4.71 seconds
TestRunner_mgmt-tester        PASS      109.59 seconds
TestRunner_rfcomm-tester      PASS      7.29 seconds
TestRunner_sco-tester         PASS      14.97 seconds
TestRunner_ioctl-tester       PASS      7.67 seconds
TestRunner_mesh-tester        PASS      5.72 seconds
TestRunner_smp-tester         PASS      6.72 seconds
TestRunner_userchan-tester    PASS      4.85 seconds
IncrementalBuild              PASS      33.12 seconds

Details
##############################
Test: CheckPatch - FAIL
Desc: Run checkpatch.pl script
Output:
[v5,1/2] Bluetooth: qca: Fix BT enable failure for QCA_QCA6390
WARNING: Reported-by: should be immediately followed by Closes: with a URL to the report
#119: 
Reported-by: Wren Turkal <[e-mail]>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=218726

total: 0 errors, 1 warnings, 8 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

/github/workspace/src/src/13637840.patch has style problems, please review.

NOTE: Ignored message types: UNKNOWN_COMMIT_ID

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.


##############################
Test: GitLint - FAIL
Desc: Run gitlint
Output:
[v5,1/2] Bluetooth: qca: Fix BT enable failure for QCA_QCA6390

WARNING: I3 - ignore-body-lines: gitlint will be switching from using Python regex 'match' (match beginning) to 'search' (match anywhere) semantics. Please review your ignore-body-lines.regex option accordingly. To remove this warning, set general.regex-style-search=True. More details: https://jorisroovers.github.io/gitlint/configuration/#regex-style-search
16: B3 Line contains hard tab characters (\t): "  	dev_warn(&serdev->dev, "failed to acquire enable gpio\n");"
17: B3 Line contains hard tab characters (\t): "	power_ctrl_enabled = false;"
24: B1 Line exceeds max length (139>80): "Link: https://lore.kernel.org/linux-bluetooth/[e-mail]/T/#m73d6a71d2f454bb03588c66f3ef7912274d37c6f"
[v5,2/2] Bluetooth: qca: Fix BT enable failure for QCA_QCA6390 after disable then warm reboot

WARNING: I3 - ignore-body-lines: gitlint will be switching from using Python regex 'match' (match beginning) to 'search' (match anywhere) semantics. Please review your ignore-body-lines.regex option accordingly. To remove this warning, set general.regex-style-search=True. More details: https://jorisroovers.github.io/gitlint/configuration/#regex-style-search
1: T1 Title exceeds max length (93>80): "[v5,2/2] Bluetooth: qca: Fix BT enable failure for QCA_QCA6390 after disable then warm reboot"
##############################
Test: CheckSmatch - FAIL
Desc: Run smatch tool with source
Output:

Segmentation fault (core dumped)
make[4]: *** [scripts/Makefile.build:244: net/bluetooth/hci_core.o] Error 139
make[4]: *** Deleting file 'net/bluetooth/hci_core.o'
make[3]: *** [scripts/Makefile.build:485: net/bluetooth] Error 2
make[2]: *** [scripts/Makefile.build:485: net] Error 2
make[2]: *** Waiting for unfinished jobs....
Segmentation fault (core dumped)
make[4]: *** [scripts/Makefile.build:244: drivers/bluetooth/bcm203x.o] Error 139
make[4]: *** Deleting file 'drivers/bluetooth/bcm203x.o'
make[4]: *** Waiting for unfinished jobs....
Segmentation fault (core dumped)
make[4]: *** [scripts/Makefile.build:244: drivers/bluetooth/bpa10x.o] Error 139
make[4]: *** Deleting file 'drivers/bluetooth/bpa10x.o'
make[3]: *** [scripts/Makefile.build:485: drivers/bluetooth] Error 2
make[2]: *** [scripts/Makefile.build:485: drivers] Error 2
make[1]: *** [/github/workspace/src/src/Makefile:1919: .] Error 2
make: *** [Makefile:240: __sub-make] Error 2


---
Regards,
Linux Bluetooth

Patch

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 92fa20f5ac7d..4079254fb1c8 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -2357,6 +2357,8 @@  static int qca_serdev_probe(struct serdev_device *serdev)
 		if (IS_ERR(qcadev->bt_en)) {
 			dev_warn(&serdev->dev, "failed to acquire enable gpio\n");
 			power_ctrl_enabled = false;
+		} else if (!qcadev->bt_en && qcadev->btsoc_type == QCA_QCA6390) {
+			power_ctrl_enabled = false;
 		}
 
 		qcadev->susclk = devm_clk_get_optional(&serdev->dev, NULL);