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([36.255.90.7]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-13fab132cc4sm23531153c88.2.2026.08.02.12.07.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 02 Aug 2026 12:07:11 -0700 (PDT) From: Moksh Panicker To: jic23@kernel.org Cc: dlechner@baylibre.com, subhajit.ghosh@tweaklogic.com, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, skhan@linuxfoundation.org, Moksh Panicker Subject: [PATCH v2] iio: light: apds9306: fix PM reference leak in apds9306_read_data() Date: Sun, 2 Aug 2026 19:07:01 +0000 Message-Id: <20260802190701.10685-1-mokshpanicker.7@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit apds9306_read_data() calls pm_runtime_resume_and_get() but several error paths return directly without calling pm_runtime_put_autosuspend(), leaking the runtime PM reference and preventing the device from autosuspending. Use PM_RUNTIME_ACQUIRE_AUTOSUSPEND() and PM_RUNTIME_ACQUIRE_ERR() to automatically handle runtime PM reference release on all return paths. Fixes: 620d1e6c7a3f ("iio: light: Add support for APDS9306 Light Sensor") Cc: stable@vger.kernel.org Signed-off-by: Moksh Panicker --- Changes in v2: - Use PM_RUNTIME_ACQUIRE_AUTOSUSPEND() and PM_RUNTIME_ACQUIRE_ERR() instead of goto pattern as suggested by Jonathan Cameron drivers/iio/light/apds9306.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/iio/light/apds9306.c b/drivers/iio/light/apds9306.c index 5ca4c87524fe..d582bda4d847 100644 --- a/drivers/iio/light/apds9306.c +++ b/drivers/iio/light/apds9306.c @@ -469,9 +469,9 @@ static int apds9306_read_data(struct apds9306_data *data, int *val, int reg) int status = 0; u8 buff[3]; - ret = pm_runtime_resume_and_get(data->dev); - if (ret) - return ret; + PM_RUNTIME_ACQUIRE_AUTOSUSPEND(data->dev, pm); + if (PM_RUNTIME_ACQUIRE_ERR(&pm)) + return PM_RUNTIME_ACQUIRE_ERR(&pm); ret = regmap_field_read(rf->intg_time, &intg_time_idx); if (ret) @@ -535,8 +535,6 @@ static int apds9306_read_data(struct apds9306_data *data, int *val, int reg) *val = get_unaligned_le24(&buff); - pm_runtime_put_autosuspend(data->dev); - return 0; } -- 2.34.1