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[92.34.215.146]) by smtp.gmail.com with ESMTPSA id y28sm2949671ljn.18.2020.11.30.04.59.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Nov 2020 04:59:20 -0800 (PST) From: Linus Walleij To: Jonathan Cameron , linux-iio@vger.kernel.org Cc: Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler , Linus Walleij Subject: [PATCH 2/2] iio: gyro: mpu3050: Store timestamp in poll function Date: Mon, 30 Nov 2020 13:59:15 +0100 Message-Id: <20201130125915.1315667-2-linus.walleij@linaro.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201130125915.1315667-1-linus.walleij@linaro.org> References: <20201130125915.1315667-1-linus.walleij@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org If something other than the MPU3050 itself is using this trigger, the timestamp needs to be stored in the poll function. Signed-off-by: Linus Walleij --- drivers/iio/gyro/mpu3050-core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/iio/gyro/mpu3050-core.c b/drivers/iio/gyro/mpu3050-core.c index 0d0850945d3a..b892487394ea 100644 --- a/drivers/iio/gyro/mpu3050-core.c +++ b/drivers/iio/gyro/mpu3050-core.c @@ -457,7 +457,7 @@ static int mpu3050_write_raw(struct iio_dev *indio_dev, static irqreturn_t mpu3050_trigger_handler(int irq, void *p) { - const struct iio_poll_func *pf = p; + struct iio_poll_func *pf = p; struct iio_dev *indio_dev = pf->indio_dev; struct mpu3050 *mpu3050 = iio_priv(indio_dev); int ret; @@ -482,6 +482,9 @@ static irqreturn_t mpu3050_trigger_handler(int irq, void *p) else timestamp = iio_get_time_ns(indio_dev); + /* Someone else may be using us as trigger */ + pf->timestamp = timestamp; + mutex_lock(&mpu3050->lock); /* Using the hardware IRQ trigger? Check the buffer then. */