[PATCH v2 1/3] slimbus: qcom-ngd: use correct error in message of pdr_add_lookup() failure
Use correct error code, instead of previous 'ret' value, when printing error from pdr_add_lookup() failure. Cc: <stable@vger.kernel.org> Fixes: e1ae85e1830e ("slimbus: qcom-ngd-ctrl: add Protection Domain Restart Support") Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> --- Changes since v1: 1. Correct typo 2. Return 'ret' instead of again PTR_ERR --- drivers/slimbus/qcom-ngd-ctrl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c index 0aa8408464ad..f4f330b9fa72 100644 --- a/drivers/slimbus/qcom-ngd-ctrl.c +++ b/drivers/slimbus/qcom-ngd-ctrl.c @@ -1581,8 +1581,9 @@ static int qcom_slim_ngd_ctrl_probe(struct platform_device *pdev) pds = pdr_add_lookup(ctrl->pdr, "avs/audio", "msm/adsp/audio_pd"); if (IS_ERR(pds) && PTR_ERR(pds) != -EALREADY) { + ret = PTR_ERR(pds); dev_err(dev, "pdr add lookup failed: %d\n", ret); - return PTR_ERR(pds); + return ret; } platform_driver_register(&qcom_slim_ngd_driver); -- 2.34.1
Add proper error path in probe() to cleanup resources previously acquired/allocated to fix warnings visible during probe deferral: notifier callback qcom_slim_ngd_ssr_notify already registered WARNING: CPU: 6 PID: 70 at kernel/notifier.c:28 notifier_chain_register+0x5c/0x90 Modules linked in: CPU: 6 PID: 70 Comm: kworker/u16:1 Not tainted 6.0.0-rc3-next-20220830 #380 Call trace: notifier_chain_register+0x5c/0x90 srcu_notifier_chain_register+0x44/0x90 qcom_register_ssr_notifier+0x38/0x4c qcom_slim_ngd_ctrl_probe+0xd8/0x400 platform_probe+0x6c/0xe0 really_probe+0xbc/0x2d4 __driver_probe_device+0x78/0xe0 driver_probe_device+0x3c/0x12c __device_attach_driver+0xb8/0x120 bus_for_each_drv+0x78/0xd0 __device_attach+0xa8/0x1c0 device_initial_probe+0x18/0x24 bus_probe_device+0xa0/0xac deferred_probe_work_func+0x88/0xc0 process_one_work+0x1d4/0x320 worker_thread+0x2cc/0x44c kthread+0x110/0x114 ret_from_fork+0x10/0x20 Cc: <stable@vger.kernel.org> Fixes: e1ae85e1830e ("slimbus: qcom-ngd-ctrl: add Protection Domain Restart Support") Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> --- Changes since v1: 1. None --- drivers/slimbus/qcom-ngd-ctrl.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c index f4f330b9fa72..bacc6af1d51e 100644 --- a/drivers/slimbus/qcom-ngd-ctrl.c +++ b/drivers/slimbus/qcom-ngd-ctrl.c @@ -1576,18 +1576,27 @@ static int qcom_slim_ngd_ctrl_probe(struct platform_device *pdev) ctrl->pdr = pdr_handle_alloc(slim_pd_status, ctrl); if (IS_ERR(ctrl->pdr)) { dev_err(dev, "Failed to init PDR handle\n"); - return PTR_ERR(ctrl->pdr); + ret = PTR_ERR(ctrl->pdr); + goto err_pdr_alloc; } pds = pdr_add_lookup(ctrl->pdr, "avs/audio", "msm/adsp/audio_pd"); if (IS_ERR(pds) && PTR_ERR(pds) != -EALREADY) { ret = PTR_ERR(pds); dev_err(dev, "pdr add lookup failed: %d\n", ret); - return ret; + goto err_pdr_lookup; } platform_driver_register(&qcom_slim_ngd_driver); return of_qcom_slim_ngd_register(dev, ctrl); + +err_pdr_alloc: + qcom_unregister_ssr_notifier(ctrl->notifier, &ctrl->nb); + +err_pdr_lookup: + pdr_handle_release(ctrl->pdr); + + return ret; } static int qcom_slim_ngd_ctrl_remove(struct platform_device *pdev) -- 2.34.1
Use dev_err_probe to skip printing of deferred probe errors and to simplify error paths. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> --- Changes since v1: 1. None --- drivers/slimbus/qcom-ngd-ctrl.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c index bacc6af1d51e..cec11aa106bf 100644 --- a/drivers/slimbus/qcom-ngd-ctrl.c +++ b/drivers/slimbus/qcom-ngd-ctrl.c @@ -1543,10 +1543,8 @@ static int qcom_slim_ngd_ctrl_probe(struct platform_device *pdev) ret = devm_request_irq(dev, ret, qcom_slim_ngd_interrupt, IRQF_TRIGGER_HIGH, "slim-ngd", ctrl); - if (ret) { - dev_err(&pdev->dev, "request IRQ failed\n"); - return ret; - } + if (ret) + return dev_err_probe(&pdev->dev, ret, "request IRQ failed\n"); ctrl->nb.notifier_call = qcom_slim_ngd_ssr_notify; ctrl->notifier = qcom_register_ssr_notifier("lpass", &ctrl->nb); @@ -1575,15 +1573,14 @@ static int qcom_slim_ngd_ctrl_probe(struct platform_device *pdev) ctrl->pdr = pdr_handle_alloc(slim_pd_status, ctrl); if (IS_ERR(ctrl->pdr)) { - dev_err(dev, "Failed to init PDR handle\n"); - ret = PTR_ERR(ctrl->pdr); + ret = dev_err_probe(dev, PTR_ERR(ctrl->pdr), + "Failed to init PDR handle\n"); goto err_pdr_alloc; } pds = pdr_add_lookup(ctrl->pdr, "avs/audio", "msm/adsp/audio_pd"); if (IS_ERR(pds) && PTR_ERR(pds) != -EALREADY) { - ret = PTR_ERR(pds); - dev_err(dev, "pdr add lookup failed: %d\n", ret); + ret = dev_err_probe(dev, PTR_ERR(pds), "pdr add lookup failed\n"); goto err_pdr_lookup; } -- 2.34.1
On 30/08/2022 18:52, Krzysztof Kozlowski wrote:
Use correct error code, instead of previous 'ret' value, when printing error from pdr_add_lookup() failure.
Cc: <stable@vger.kernel.org> Fixes: e1ae85e1830e ("slimbus: qcom-ngd-ctrl: add Protection Domain Restart Support") Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
Applied all thanks, --srini
Changes since v1: 1. Correct typo 2. Return 'ret' instead of again PTR_ERR --- drivers/slimbus/qcom-ngd-ctrl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c index 0aa8408464ad..f4f330b9fa72 100644 --- a/drivers/slimbus/qcom-ngd-ctrl.c +++ b/drivers/slimbus/qcom-ngd-ctrl.c @@ -1581,8 +1581,9 @@ static int qcom_slim_ngd_ctrl_probe(struct platform_device *pdev)
pds = pdr_add_lookup(ctrl->pdr, "avs/audio", "msm/adsp/audio_pd"); if (IS_ERR(pds) && PTR_ERR(pds) != -EALREADY) { + ret = PTR_ERR(pds); dev_err(dev, "pdr add lookup failed: %d\n", ret); - return PTR_ERR(pds); + return ret; }
platform_driver_register(&qcom_slim_ngd_driver);
participants (2)
-
Krzysztof Kozlowski -
Srinivas Kandagatla