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From: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>
To: Srinivas Kandagatla <srini@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Vinod Koul <vkoul@kernel.org>,
	Krzysztof Kozlowski <krzk@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, linux-sound@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>,
	stable@vger.kernel.org,
	Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>,
	Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
Subject: [PATCH v2 2/7] slimbus: qcom-ngd-ctrl: Fix probe error path ordering
Date: Tue, 31 Mar 2026 22:22:44 -0500	[thread overview]
Message-ID: <20260331-slim-ngd-dev-v2-2-9441e9c8420e@oss.qualcomm.com> (raw)
In-Reply-To: <20260331-slim-ngd-dev-v2-0-9441e9c8420e@oss.qualcomm.com>

qcom_slim_ngd_ctrl_probe() first registers the SSR callback then
allocates the PDR context, as such the error path needs to come in
opposite order to allow us to unroll each step.

Fixes: 16f14551d0df ("slimbus: qcom-ngd: cleanup in probe error path")
Cc: stable@vger.kernel.org
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>
---
 drivers/slimbus/qcom-ngd-ctrl.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c
index b603b9337905438b6c9f5dbe800e560c864d946d..f26fe54b2ffb4bbfe6da6b717257313536abf60f 100644
--- a/drivers/slimbus/qcom-ngd-ctrl.c
+++ b/drivers/slimbus/qcom-ngd-ctrl.c
@@ -1660,22 +1660,21 @@ static int qcom_slim_ngd_ctrl_probe(struct platform_device *pdev)
 	if (IS_ERR(ctrl->pdr)) {
 		ret = dev_err_probe(dev, PTR_ERR(ctrl->pdr),
 				    "Failed to init PDR handle\n");
-		goto err_pdr_alloc;
+		goto err_unregister_ssr;
 	}
 
 	pds = pdr_add_lookup(ctrl->pdr, "avs/audio", "msm/adsp/audio_pd");
 	if (IS_ERR(pds) && PTR_ERR(pds) != -EALREADY) {
 		ret = dev_err_probe(dev, PTR_ERR(pds), "pdr add lookup failed\n");
-		goto err_pdr_lookup;
+		goto err_pdr_release;
 	}
 
 	return of_qcom_slim_ngd_register(dev, ctrl);
 
-err_pdr_alloc:
-	qcom_unregister_ssr_notifier(ctrl->notifier, &ctrl->nb);
-
-err_pdr_lookup:
+err_pdr_release:
 	pdr_handle_release(ctrl->pdr);
+err_unregister_ssr:
+	qcom_unregister_ssr_notifier(ctrl->notifier, &ctrl->nb);
 
 	return ret;
 }

-- 
2.51.0


  parent reply	other threads:[~2026-04-01  3:22 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-01  3:22 [PATCH v2 0/7] slimbus: qcom-ngd-ctrl: Fix some race conditions and deadlocks Bjorn Andersson
2026-04-01  3:22 ` [PATCH v2 1/7] slimbus: qcom-ngd-ctrl: Fix up platform_driver registration Bjorn Andersson
2026-04-01  3:22 ` Bjorn Andersson [this message]
2026-04-01  3:22 ` [PATCH v2 3/7] slimbus: qcom-ngd-ctrl: Correct PDR and SSR cleanup ownership Bjorn Andersson
2026-04-01  3:22 ` [PATCH v2 4/7] slimbus: qcom-ngd-ctrl: Register callbacks after creating the ngd Bjorn Andersson
2026-04-01  3:22 ` [PATCH v2 5/7] slimbus: qcom-ngd-ctrl: Initialize controller resources in controller Bjorn Andersson
2026-04-01  3:22 ` [PATCH v2 6/7] slimbus: qcom-ngd-ctrl: Balance pm_runtime enablement for NGD Bjorn Andersson
2026-04-01  3:22 ` [PATCH v2 7/7] slimbus: qcom-ngd-ctrl: Avoid ABBA on tx_lock/ctrl->lock Bjorn Andersson

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