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memory: mtk-smi: fix device leaks on common probe

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Make sure to drop the reference taken when looking up the SMI device
during common probe on late probe failure (e.g. probe deferral) and on
driver unbind.

Fixes: 4740475770 ("memory: mtk-smi: Add device link for smi-sub-common")
Fixes: 038ae37c51 ("memory: mtk-smi: add missing put_device() call in mtk_smi_device_link_common")
Cc: stable@vger.kernel.org	# 5.16: 038ae37c51
Cc: stable@vger.kernel.org	# 5.16
Cc: Yong Wu <yong.wu@mediatek.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20251121164624.13685-2-johan@kernel.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
This commit is contained in:
Johan Hovold
2025-11-21 17:46:22 +01:00
committed by Krzysztof Kozlowski
parent 8f0b4cce44
commit 6cfa038bdd
1 changed files with 2 additions and 0 deletions
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2
drivers/memory/mtk-smi.c
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@@ -674,6 +674,7 @@ static int mtk_smi_larb_probe(struct platform_device *pdev)
err_pm_disable:
pm_runtime_disable(dev);
device_link_remove(dev, larb->smi_common_dev);
put_device(larb->smi_common_dev);
return ret;
}
@@ -917,6 +918,7 @@ static void mtk_smi_common_remove(struct platform_device *pdev)
if (common->plat->type == MTK_SMI_GEN2_SUB_COMM)
device_link_remove(&pdev->dev, common->smi_common_dev);
pm_runtime_disable(&pdev->dev);
put_device(common->smi_common_dev);
}
static int __maybe_unused mtk_smi_common_resume(struct device *dev)