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From: Tudor Ambarus <tudor.ambarus@linaro.org>
To: Krzysztof Kozlowski <krzk@kernel.org>,
	 Bjorn Andersson <andersson@kernel.org>,
	 Konrad Dybcio <konradybcio@kernel.org>,
	 Adrian Hunter <adrian.hunter@intel.com>,
	 Ulf Hansson <ulf.hansson@linaro.org>,
	Abel Vesa <abel.vesa@linaro.org>,
	 Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>,
	 "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
	 "Martin K. Petersen" <martin.petersen@oracle.com>,
	 Eric Biggers <ebiggers@google.com>
Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
	 linux-mmc@vger.kernel.org, linux-scsi@vger.kernel.org,
	 andre.draszik@linaro.org, peter.griffin@linaro.org,
	willmcvicker@google.com,  kernel-team@android.com,
	Tudor Ambarus <tudor.ambarus@linaro.org>,
	 stable@vger.kernel.org,
	 Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Subject: [PATCH v2 0/4] soc: qcom: ice: fix dev reference leaked through of_qcom_ice_get
Date: Fri, 17 Jan 2025 14:18:49 +0000	[thread overview]
Message-ID: <20250117-qcom-ice-fix-dev-leak-v2-0-1ffa5b6884cb@linaro.org> (raw)

Hi!

Recently I've been pointed to this driver for an example on how consumers
can get a pointer to the supplier's driver data and I noticed a leak.

Callers of of_qcom_ice_get() leak the device reference taken by
of_find_device_by_node(). Introduce devm_of_qcom_ice_get().
Exporting qcom_ice_put() is not done intentionally as the consumers need
the ICE intance for the entire life of their device. Update the consumers
to use the devm variant and make of_qcom_ice_get() static afterwards.

This set touches mmc and scsi subsystems. Since the fix is trivial for
them, I'd suggest taking everything through the SoC tree with Acked-by
tags if people consider this fine. Note that the mmc and scsi patches
depend on the first patch that introduces devm_of_qcom_ice_get().

Thanks!

Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
---
Changes in v2:
- add kernel doc for newly introduced devm_of_qcom_ice_get().
- update cover letter and commit message of first patch.
- collect R-b and A-b tags.
- Link to v1: https://lore.kernel.org/r/20250116-qcom-ice-fix-dev-leak-v1-0-84d937683790@linaro.org

---
Tudor Ambarus (4):
      soc: qcom: ice: introduce devm_of_qcom_ice_get
      mmc: sdhci-msm: fix dev reference leaked through of_qcom_ice_get
      scsi: ufs: qcom: fix dev reference leaked through of_qcom_ice_get
      soc: qcom: ice: make of_qcom_ice_get() static

 drivers/mmc/host/sdhci-msm.c |  2 +-
 drivers/soc/qcom/ice.c       | 51 ++++++++++++++++++++++++++++++++++++++++++--
 drivers/ufs/host/ufs-qcom.c  |  2 +-
 include/soc/qcom/ice.h       |  3 ++-
 4 files changed, 53 insertions(+), 5 deletions(-)
---
base-commit: b323d8e7bc03d27dec646bfdccb7d1a92411f189
change-id: 20250110-qcom-ice-fix-dev-leak-bbff59a964fb

Best regards,
-- 
Tudor Ambarus <tudor.ambarus@linaro.org>


             reply	other threads:[~2025-01-17 14:19 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-01-17 14:18 Tudor Ambarus [this message]
2025-01-17 14:18 ` [PATCH v2 1/4] soc: qcom: ice: introduce devm_of_qcom_ice_get Tudor Ambarus
2025-01-18 13:31   ` Krzysztof Kozlowski
2025-01-19 16:57   ` Abel Vesa
2025-01-17 14:18 ` [PATCH v2 2/4] mmc: sdhci-msm: fix dev reference leaked through of_qcom_ice_get Tudor Ambarus
2025-01-19 16:59   ` Abel Vesa
2025-01-17 14:18 ` [PATCH v2 3/4] scsi: ufs: qcom: " Tudor Ambarus
2025-01-19 16:59   ` Abel Vesa
2025-02-03 21:43   ` Martin K. Petersen
2025-01-17 14:18 ` [PATCH v2 4/4] soc: qcom: ice: make of_qcom_ice_get() static Tudor Ambarus
2025-01-19 16:58   ` Abel Vesa
2025-01-24  7:38 ` [PATCH v2 0/4] soc: qcom: ice: fix dev reference leaked through of_qcom_ice_get Manivannan Sadhasivam
2025-02-14 22:38 ` Bjorn Andersson

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