| Message ID | 1713354823-17826-1-git-send-email-quic_zijuhu@quicinc.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Revert "Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()" | expand |
| Context | Check | Description |
|---|---|---|
| tedd_an/pre-ci_am | success | Success |
| tedd_an/CheckPatch | success | CheckPatch PASS |
| tedd_an/GitLint | success | Gitlint PASS |
| tedd_an/SubjectPrefix | success | Gitlint PASS |
| tedd_an/BuildKernel | success | BuildKernel PASS |
| tedd_an/CheckAllWarning | success | CheckAllWarning PASS |
| tedd_an/CheckSparse | success | CheckSparse PASS |
| tedd_an/CheckSmatch | fail | CheckSparse: FAIL: 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.... 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 |
| tedd_an/BuildKernel32 | success | BuildKernel32 PASS |
| tedd_an/TestRunnerSetup | success | TestRunnerSetup PASS |
| tedd_an/TestRunner_l2cap-tester | success | TestRunner PASS |
| tedd_an/TestRunner_iso-tester | success | TestRunner PASS |
| tedd_an/TestRunner_bnep-tester | success | TestRunner PASS |
| tedd_an/TestRunner_mgmt-tester | fail | TestRunner_mgmt-tester: Total: 492, Passed: 489 (99.4%), Failed: 1, Not Run: 2 |
| tedd_an/TestRunner_rfcomm-tester | success | TestRunner PASS |
| tedd_an/TestRunner_sco-tester | success | TestRunner PASS |
| tedd_an/TestRunner_ioctl-tester | success | TestRunner PASS |
| tedd_an/TestRunner_mesh-tester | success | TestRunner PASS |
| tedd_an/TestRunner_smp-tester | success | TestRunner PASS |
| tedd_an/TestRunner_userchan-tester | success | TestRunner PASS |
| tedd_an/IncrementalBuild | success | Incremental Build PASS |
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=845417 ---Test result--- Test Summary: CheckPatch PASS 0.64 seconds GitLint PASS 0.30 seconds SubjectPrefix PASS 0.11 seconds BuildKernel PASS 29.80 seconds CheckAllWarning PASS 33.20 seconds CheckSparse PASS 38.40 seconds CheckSmatch FAIL 35.17 seconds BuildKernel32 PASS 28.95 seconds TestRunnerSetup PASS 525.36 seconds TestRunner_l2cap-tester PASS 18.53 seconds TestRunner_iso-tester PASS 33.68 seconds TestRunner_bnep-tester PASS 4.76 seconds TestRunner_mgmt-tester FAIL 110.69 seconds TestRunner_rfcomm-tester PASS 7.38 seconds TestRunner_sco-tester PASS 11.07 seconds TestRunner_ioctl-tester PASS 7.61 seconds TestRunner_mesh-tester PASS 6.73 seconds TestRunner_smp-tester PASS 6.70 seconds TestRunner_userchan-tester PASS 4.85 seconds IncrementalBuild PASS 27.83 seconds Details ############################## 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.... 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 ############################## Test: TestRunner_mgmt-tester - FAIL Desc: Run mgmt-tester with test-runner Output: Total: 492, Passed: 489 (99.4%), Failed: 1, Not Run: 2 Failed Test Cases LL Privacy - Add Device 7 (AL is full) Failed 0.194 seconds --- Regards, Linux Bluetooth
On Wed, 17 Apr 2024 at 13:53, Zijun Hu <quic_zijuhu@quicinc.com> wrote: > > This reverts commit 56d074d26c5828773b00b2185dd7e1d08273b8e8. > > Commit 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() > with gpiod_get_optional()") will cause serious regression issue for > several QCA controllers such as QCA_WCN6750,QCA_WCN6855,QCA_ROME, > QCA_QCA6390 and QCA_QCA2066, the regression issue is that BT can't be > enabled any more once BT is disabled if BT reset pin is not configured > by DT or ACPI. > > if BT reset pin is not configured, devm_gpiod_get_optional() will return > NULL, and we should NOT set quirk HCI_QUIRK_NON_PERSISTENT_SETUP, but the > reverted commit SET the quirk since NULL is not a error case, and cause > qca_setup() call failure triggered by the 2nd and later BT enable > operations since there are no available BT reset pin to clear BT firmware > downloaded by the 1st enable operation, fixed by reverting the commit. > Then you just go back to bad usage of the GPIO API. Please see my suggestion below. > Link: https://bugzilla.kernel.org/show_bug.cgi?id=218726 > Fixes: 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()") > Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> > --- > drivers/bluetooth/hci_qca.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c > index 92fa20f5ac7d..160175a23a49 100644 > --- a/drivers/bluetooth/hci_qca.c > +++ b/drivers/bluetooth/hci_qca.c > @@ -2323,7 +2323,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) > > qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable", > GPIOD_OUT_LOW); > - if (IS_ERR(qcadev->bt_en) && > + if (IS_ERR_OR_NULL(qcadev->bt_en) && > (data->soc_type == QCA_WCN6750 || > data->soc_type == QCA_WCN6855)) { > dev_err(&serdev->dev, "failed to acquire BT_EN gpio\n"); > @@ -2332,7 +2332,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) > > qcadev->sw_ctrl = devm_gpiod_get_optional(&serdev->dev, "swctrl", > GPIOD_IN); > - if (IS_ERR(qcadev->sw_ctrl) && > + if (IS_ERR_OR_NULL(qcadev->sw_ctrl) && > (data->soc_type == QCA_WCN6750 || > data->soc_type == QCA_WCN6855 || > data->soc_type == QCA_WCN7850)) > @@ -2354,7 +2354,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) > default: > qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable", > GPIOD_OUT_LOW); > - if (IS_ERR(qcadev->bt_en)) { > + if (IS_ERR_OR_NULL(qcadev->bt_en)) { > dev_warn(&serdev->dev, "failed to acquire enable gpio\n"); > power_ctrl_enabled = false; Can you just move this out of this block? Or just simply check the presence of the GPIO descriptor in the if block setting the quirk bit? Warning on a missing *optional* GPIO is wrong. It's not an unexpected situation, it's normal. Bartosz > } > -- > 2.7.4 >
On 4/18/2024 2:59 AM, Bartosz Golaszewski wrote: > On Wed, 17 Apr 2024 at 13:53, Zijun Hu <quic_zijuhu@quicinc.com> wrote: >> >> This reverts commit 56d074d26c5828773b00b2185dd7e1d08273b8e8. >> >> Commit 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() >> with gpiod_get_optional()") will cause serious regression issue for >> several QCA controllers such as QCA_WCN6750,QCA_WCN6855,QCA_ROME, >> QCA_QCA6390 and QCA_QCA2066, the regression issue is that BT can't be >> enabled any more once BT is disabled if BT reset pin is not configured >> by DT or ACPI. >> >> if BT reset pin is not configured, devm_gpiod_get_optional() will return >> NULL, and we should NOT set quirk HCI_QUIRK_NON_PERSISTENT_SETUP, but the >> reverted commit SET the quirk since NULL is not a error case, and cause >> qca_setup() call failure triggered by the 2nd and later BT enable >> operations since there are no available BT reset pin to clear BT firmware >> downloaded by the 1st enable operation, fixed by reverting the commit. >> > > Then you just go back to bad usage of the GPIO API. Please see my > suggestion below. > we need to treat below tow cases equivalently. 1) BT reset pin is NOT configured, devm_gpiod_get_optional() return NULL. 2) BT reset pin is configured, but failed to be got, devm_gpiod_get_optional() return ERROR. FOR above two cases, hci_qca driver doesn't get available BT reset pin for H/W reset. so we use IS_ERR_OR_NULL() instead of IS_ERR(). is it not right ? >> Link: https://bugzilla.kernel.org/show_bug.cgi?id=218726 >> Fixes: 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()") >> Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> >> --- >> drivers/bluetooth/hci_qca.c | 6 +++--- >> 1 file changed, 3 insertions(+), 3 deletions(-) >> >> diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c >> index 92fa20f5ac7d..160175a23a49 100644 >> --- a/drivers/bluetooth/hci_qca.c >> +++ b/drivers/bluetooth/hci_qca.c >> @@ -2323,7 +2323,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) >> >> qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable", >> GPIOD_OUT_LOW); >> - if (IS_ERR(qcadev->bt_en) && >> + if (IS_ERR_OR_NULL(qcadev->bt_en) && >> (data->soc_type == QCA_WCN6750 || >> data->soc_type == QCA_WCN6855)) { >> dev_err(&serdev->dev, "failed to acquire BT_EN gpio\n"); >> @@ -2332,7 +2332,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) >> >> qcadev->sw_ctrl = devm_gpiod_get_optional(&serdev->dev, "swctrl", >> GPIOD_IN); >> - if (IS_ERR(qcadev->sw_ctrl) && >> + if (IS_ERR_OR_NULL(qcadev->sw_ctrl) && >> (data->soc_type == QCA_WCN6750 || >> data->soc_type == QCA_WCN6855 || >> data->soc_type == QCA_WCN7850)) >> @@ -2354,7 +2354,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) >> default: >> qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable", >> GPIOD_OUT_LOW); >> - if (IS_ERR(qcadev->bt_en)) { >> + if (IS_ERR_OR_NULL(qcadev->bt_en)) { >> dev_warn(&serdev->dev, "failed to acquire enable gpio\n"); >> power_ctrl_enabled = false; > > Can you just move this out of this block? Or just simply check the > presence of the GPIO descriptor in the if block setting the quirk bit? > Warning on a missing *optional* GPIO is wrong. It's not an unexpected > situation, it's normal. > your concern is that the prompt message is printed by wrong way or the prompt message is not precise. is it right ? > Bartosz > >> } >> -- >> 2.7.4 >>
On Thu, 18 Apr 2024 at 01:44, quic_zijuhu <quic_zijuhu@quicinc.com> wrote: > > On 4/18/2024 2:59 AM, Bartosz Golaszewski wrote: > > On Wed, 17 Apr 2024 at 13:53, Zijun Hu <quic_zijuhu@quicinc.com> wrote: > >> > >> This reverts commit 56d074d26c5828773b00b2185dd7e1d08273b8e8. > >> > >> Commit 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() > >> with gpiod_get_optional()") will cause serious regression issue for > >> several QCA controllers such as QCA_WCN6750,QCA_WCN6855,QCA_ROME, > >> QCA_QCA6390 and QCA_QCA2066, the regression issue is that BT can't be > >> enabled any more once BT is disabled if BT reset pin is not configured > >> by DT or ACPI. > >> > >> if BT reset pin is not configured, devm_gpiod_get_optional() will return > >> NULL, and we should NOT set quirk HCI_QUIRK_NON_PERSISTENT_SETUP, but the > >> reverted commit SET the quirk since NULL is not a error case, and cause > >> qca_setup() call failure triggered by the 2nd and later BT enable > >> operations since there are no available BT reset pin to clear BT firmware > >> downloaded by the 1st enable operation, fixed by reverting the commit. > >> > > > > Then you just go back to bad usage of the GPIO API. Please see my > > suggestion below. > > > we need to treat below tow cases equivalently. > 1) BT reset pin is NOT configured, devm_gpiod_get_optional() return NULL. > 2) BT reset pin is configured, but failed to be got, devm_gpiod_get_optional() return ERROR. > > FOR above two cases, hci_qca driver doesn't get available BT reset pin for H/W reset. > so we use IS_ERR_OR_NULL() instead of IS_ERR(). > > is it not right ? > > > >> Link: https://bugzilla.kernel.org/show_bug.cgi?id=218726 > >> Fixes: 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()") > >> Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> > >> --- > >> drivers/bluetooth/hci_qca.c | 6 +++--- > >> 1 file changed, 3 insertions(+), 3 deletions(-) > >> > >> diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c > >> index 92fa20f5ac7d..160175a23a49 100644 > >> --- a/drivers/bluetooth/hci_qca.c > >> +++ b/drivers/bluetooth/hci_qca.c > >> @@ -2323,7 +2323,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) > >> > >> qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable", > >> GPIOD_OUT_LOW); > >> - if (IS_ERR(qcadev->bt_en) && > >> + if (IS_ERR_OR_NULL(qcadev->bt_en) && > >> (data->soc_type == QCA_WCN6750 || > >> data->soc_type == QCA_WCN6855)) { > >> dev_err(&serdev->dev, "failed to acquire BT_EN gpio\n"); > >> @@ -2332,7 +2332,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) > >> > >> qcadev->sw_ctrl = devm_gpiod_get_optional(&serdev->dev, "swctrl", > >> GPIOD_IN); > >> - if (IS_ERR(qcadev->sw_ctrl) && > >> + if (IS_ERR_OR_NULL(qcadev->sw_ctrl) && > >> (data->soc_type == QCA_WCN6750 || > >> data->soc_type == QCA_WCN6855 || > >> data->soc_type == QCA_WCN7850)) > >> @@ -2354,7 +2354,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) > >> default: > >> qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable", > >> GPIOD_OUT_LOW); > >> - if (IS_ERR(qcadev->bt_en)) { > >> + if (IS_ERR_OR_NULL(qcadev->bt_en)) { > >> dev_warn(&serdev->dev, "failed to acquire enable gpio\n"); > >> power_ctrl_enabled = false; > > > > Can you just move this out of this block? Or just simply check the > > presence of the GPIO descriptor in the if block setting the quirk bit? > > Warning on a missing *optional* GPIO is wrong. It's not an unexpected > > situation, it's normal. > > > your concern is that the prompt message is printed by wrong way or the prompt message is not precise. > is it right ? > Actually now that you're saying this: if gpiod_get_optional() returns IS_ERR() then we should bail-out and return dev_err_probe(), not proceed. What if GPIOLIB returns EPROBE_DEFER? Only NULL is an acceptable return value from gpiod_get_optional(). Bart > > Bartosz > > > >> } > >> -- > >> 2.7.4 > >> >
On 4/18/2024 8:01 AM, Bartosz Golaszewski wrote: > On Thu, 18 Apr 2024 at 01:44, quic_zijuhu <quic_zijuhu@quicinc.com> wrote: >> >> On 4/18/2024 2:59 AM, Bartosz Golaszewski wrote: >>> On Wed, 17 Apr 2024 at 13:53, Zijun Hu <quic_zijuhu@quicinc.com> wrote: >>>> >>>> This reverts commit 56d074d26c5828773b00b2185dd7e1d08273b8e8. >>>> >>>> Commit 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() >>>> with gpiod_get_optional()") will cause serious regression issue for >>>> several QCA controllers such as QCA_WCN6750,QCA_WCN6855,QCA_ROME, >>>> QCA_QCA6390 and QCA_QCA2066, the regression issue is that BT can't be >>>> enabled any more once BT is disabled if BT reset pin is not configured >>>> by DT or ACPI. >>>> >>>> if BT reset pin is not configured, devm_gpiod_get_optional() will return >>>> NULL, and we should NOT set quirk HCI_QUIRK_NON_PERSISTENT_SETUP, but the >>>> reverted commit SET the quirk since NULL is not a error case, and cause >>>> qca_setup() call failure triggered by the 2nd and later BT enable >>>> operations since there are no available BT reset pin to clear BT firmware >>>> downloaded by the 1st enable operation, fixed by reverting the commit. >>>> >>> >>> Then you just go back to bad usage of the GPIO API. Please see my >>> suggestion below. >>> >> we need to treat below tow cases equivalently. >> 1) BT reset pin is NOT configured, devm_gpiod_get_optional() return NULL. >> 2) BT reset pin is configured, but failed to be got, devm_gpiod_get_optional() return ERROR. >> >> FOR above two cases, hci_qca driver doesn't get available BT reset pin for H/W reset. >> so we use IS_ERR_OR_NULL() instead of IS_ERR(). >> >> is it not right ? >> >> >>>> Link: https://bugzilla.kernel.org/show_bug.cgi?id=218726 >>>> Fixes: 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()") >>>> Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> >>>> --- >>>> drivers/bluetooth/hci_qca.c | 6 +++--- >>>> 1 file changed, 3 insertions(+), 3 deletions(-) >>>> >>>> diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c >>>> index 92fa20f5ac7d..160175a23a49 100644 >>>> --- a/drivers/bluetooth/hci_qca.c >>>> +++ b/drivers/bluetooth/hci_qca.c >>>> @@ -2323,7 +2323,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) >>>> >>>> qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable", >>>> GPIOD_OUT_LOW); >>>> - if (IS_ERR(qcadev->bt_en) && >>>> + if (IS_ERR_OR_NULL(qcadev->bt_en) && >>>> (data->soc_type == QCA_WCN6750 || >>>> data->soc_type == QCA_WCN6855)) { >>>> dev_err(&serdev->dev, "failed to acquire BT_EN gpio\n"); >>>> @@ -2332,7 +2332,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) >>>> >>>> qcadev->sw_ctrl = devm_gpiod_get_optional(&serdev->dev, "swctrl", >>>> GPIOD_IN); >>>> - if (IS_ERR(qcadev->sw_ctrl) && >>>> + if (IS_ERR_OR_NULL(qcadev->sw_ctrl) && >>>> (data->soc_type == QCA_WCN6750 || >>>> data->soc_type == QCA_WCN6855 || >>>> data->soc_type == QCA_WCN7850)) >>>> @@ -2354,7 +2354,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) >>>> default: >>>> qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable", >>>> GPIOD_OUT_LOW); >>>> - if (IS_ERR(qcadev->bt_en)) { >>>> + if (IS_ERR_OR_NULL(qcadev->bt_en)) { >>>> dev_warn(&serdev->dev, "failed to acquire enable gpio\n"); >>>> power_ctrl_enabled = false; >>> >>> Can you just move this out of this block? Or just simply check the >>> presence of the GPIO descriptor in the if block setting the quirk bit? >>> Warning on a missing *optional* GPIO is wrong. It's not an unexpected >>> situation, it's normal. >>> >> your concern is that the prompt message is printed by wrong way or the prompt message is not precise. >> is it right ? >> > > Actually now that you're saying this: if gpiod_get_optional() returns > IS_ERR() then we should bail-out and return dev_err_probe(), not > proceed. What if GPIOLIB returns EPROBE_DEFER? Only NULL is an > acceptable return value from gpiod_get_optional(). > 1) "you're saying this" or "i am saying this" ? is it a typo error? 2) BT still is able to work by clearing the quirk even if getting preferred H/W reset way failure, why need to bail-out and return dev_err_probe() ? 3) are you sumbit the change because you meet any functionality issues? 4) do you meet the case that EPROBE_DEFER is returned ?, are your change is to fix the EPROBE_DEFER case ? if so, your fix is not right. > Bart > >>> Bartosz >>> >>>> } >>>> -- >>>> 2.7.4 >>>> >>
On 4/17/24 11:59 AM, Bartosz Golaszewski wrote: > On Wed, 17 Apr 2024 at 13:53, Zijun Hu <quic_zijuhu@quicinc.com> wrote: >> >> This reverts commit 56d074d26c5828773b00b2185dd7e1d08273b8e8. >> >> Commit 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() >> with gpiod_get_optional()") will cause serious regression issue for >> several QCA controllers such as QCA_WCN6750,QCA_WCN6855,QCA_ROME, >> QCA_QCA6390 and QCA_QCA2066, the regression issue is that BT can't be >> enabled any more once BT is disabled if BT reset pin is not configured >> by DT or ACPI. >> >> if BT reset pin is not configured, devm_gpiod_get_optional() will return >> NULL, and we should NOT set quirk HCI_QUIRK_NON_PERSISTENT_SETUP, but the >> reverted commit SET the quirk since NULL is not a error case, and cause >> qca_setup() call failure triggered by the 2nd and later BT enable >> operations since there are no available BT reset pin to clear BT firmware >> downloaded by the 1st enable operation, fixed by reverting the commit. >> > > Then you just go back to bad usage of the GPIO API. Please see my > suggestion below. This revert fixes all the issues I have seen with QCA6390 hardware recently. I use a bluetooth mouse, and the hardware hasn't been working well for sometime, but really fully broke sometime during the last few months. It made my laptop unusable without shutting it down every time I wanted to just put it to sleep. I frankly would prefer the bad usage to live another dev cycle if that's what it takes to find a proper solution that doesn't re-break my hardware. >> Link: https://bugzilla.kernel.org/show_bug.cgi?id=218726 >> Fixes: 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()") >> Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> >> --- >> drivers/bluetooth/hci_qca.c | 6 +++--- >> 1 file changed, 3 insertions(+), 3 deletions(-) >> >> diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c >> index 92fa20f5ac7d..160175a23a49 100644 >> --- a/drivers/bluetooth/hci_qca.c >> +++ b/drivers/bluetooth/hci_qca.c >> @@ -2323,7 +2323,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) >> >> qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable", >> GPIOD_OUT_LOW); >> - if (IS_ERR(qcadev->bt_en) && >> + if (IS_ERR_OR_NULL(qcadev->bt_en) && >> (data->soc_type == QCA_WCN6750 || >> data->soc_type == QCA_WCN6855)) { >> dev_err(&serdev->dev, "failed to acquire BT_EN gpio\n"); >> @@ -2332,7 +2332,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) >> >> qcadev->sw_ctrl = devm_gpiod_get_optional(&serdev->dev, "swctrl", >> GPIOD_IN); >> - if (IS_ERR(qcadev->sw_ctrl) && >> + if (IS_ERR_OR_NULL(qcadev->sw_ctrl) && >> (data->soc_type == QCA_WCN6750 || >> data->soc_type == QCA_WCN6855 || >> data->soc_type == QCA_WCN7850)) >> @@ -2354,7 +2354,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) >> default: >> qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable", >> GPIOD_OUT_LOW); >> - if (IS_ERR(qcadev->bt_en)) { >> + if (IS_ERR_OR_NULL(qcadev->bt_en)) { >> dev_warn(&serdev->dev, "failed to acquire enable gpio\n"); >> power_ctrl_enabled = false; > > Can you just move this out of this block? Or just simply check the > presence of the GPIO descriptor in the if block setting the quirk bit? > Warning on a missing *optional* GPIO is wrong. It's not an unexpected > situation, it's normal. Do you have a proposed patch? I am happy to help test it if that helps get to a conclusion. > > Bartosz > >> } >> -- >> 2.7.4 >>
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index 92fa20f5ac7d..160175a23a49 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -2323,7 +2323,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable", GPIOD_OUT_LOW); - if (IS_ERR(qcadev->bt_en) && + if (IS_ERR_OR_NULL(qcadev->bt_en) && (data->soc_type == QCA_WCN6750 || data->soc_type == QCA_WCN6855)) { dev_err(&serdev->dev, "failed to acquire BT_EN gpio\n"); @@ -2332,7 +2332,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) qcadev->sw_ctrl = devm_gpiod_get_optional(&serdev->dev, "swctrl", GPIOD_IN); - if (IS_ERR(qcadev->sw_ctrl) && + if (IS_ERR_OR_NULL(qcadev->sw_ctrl) && (data->soc_type == QCA_WCN6750 || data->soc_type == QCA_WCN6855 || data->soc_type == QCA_WCN7850)) @@ -2354,7 +2354,7 @@ static int qca_serdev_probe(struct serdev_device *serdev) default: qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable", GPIOD_OUT_LOW); - if (IS_ERR(qcadev->bt_en)) { + if (IS_ERR_OR_NULL(qcadev->bt_en)) { dev_warn(&serdev->dev, "failed to acquire enable gpio\n"); power_ctrl_enabled = false; }
This reverts commit 56d074d26c5828773b00b2185dd7e1d08273b8e8. Commit 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()") will cause serious regression issue for several QCA controllers such as QCA_WCN6750,QCA_WCN6855,QCA_ROME, QCA_QCA6390 and QCA_QCA2066, the regression issue is that BT can't be enabled any more once BT is disabled if BT reset pin is not configured by DT or ACPI. if BT reset pin is not configured, devm_gpiod_get_optional() will return NULL, and we should NOT set quirk HCI_QUIRK_NON_PERSISTENT_SETUP, but the reverted commit SET the quirk since NULL is not a error case, and cause qca_setup() call failure triggered by the 2nd and later BT enable operations since there are no available BT reset pin to clear BT firmware downloaded by the 1st enable operation, fixed by reverting the commit. Link: https://bugzilla.kernel.org/show_bug.cgi?id=218726 Fixes: 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()") Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> --- drivers/bluetooth/hci_qca.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)