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Sun, 18 Jan 2026 07:45:05 -0800 (PST) From: Kurt Borja Date: Sun, 18 Jan 2026 10:44:33 -0500 Subject: [PATCH v4 6/7] iio: health: max30102: Use IIO cleanup helpers Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20260118-lock-impr-v4-6-6c8d0aee8ed2@gmail.com> References: <20260118-lock-impr-v4-0-6c8d0aee8ed2@gmail.com> In-Reply-To: <20260118-lock-impr-v4-0-6c8d0aee8ed2@gmail.com> To: Andy Shevchenko , Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , Benson Leung , Antoniu Miclaus , Gwendal Grignou , Shrikant Raskar , Per-Daniel Olsson Cc: David Lechner , =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko , Guenter Roeck , Jonathan Cameron , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, chrome-platform@lists.linux.dev, Kurt Borja X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=2086; i=kuurtb@gmail.com; h=from:subject:message-id; bh=R6AtgfHNFuyoDu3Dt8So6HbHkHEi4svHf3KFVpxGpRY=; b=owGbwMvMwCUmluBs8WX+lTTG02pJDJk5/z+KsaetvqNpz/Jty55VRR2Fgt/erzJ7WWW/qmtL6 owrzOY2HaUsDGJcDLJiiiztCYu+PYrKe+t3IPQ+zBxWJpAhDFycAjCR83KMDLN6GFbuZXgb8nTK hNfPlVgneCdYrJYODnP+lLol0mPd3R+MDK1liWf0Ek7wrZlqLGdVseJgb7CSX1n61T05E3JfMhT f4QIA X-Developer-Key: i=kuurtb@gmail.com; a=openpgp; fpr=54D3BE170AEF777983C3C63B57E3B6585920A69A Use IIO_DEV_GUARD_CURRENT_MODE() cleanup helper to simplify and drop busy-waiting code in max30102_read_raw(). Reviewed-by: David Lechner Reviewed-by: Nuno Sá Signed-off-by: Kurt Borja --- drivers/iio/health/max30102.c | 33 +++++++++------------------------ 1 file changed, 9 insertions(+), 24 deletions(-) diff --git a/drivers/iio/health/max30102.c b/drivers/iio/health/max30102.c index 6918fcb5de2b..47da44efd68b 100644 --- a/drivers/iio/health/max30102.c +++ b/drivers/iio/health/max30102.c @@ -467,44 +467,29 @@ static int max30102_read_raw(struct iio_dev *indio_dev, int *val, int *val2, long mask) { struct max30102_data *data = iio_priv(indio_dev); - int ret = -EINVAL; + int ret; switch (mask) { - case IIO_CHAN_INFO_RAW: + case IIO_CHAN_INFO_RAW: { /* * Temperature reading can only be acquired when not in * shutdown; leave shutdown briefly when buffer not running */ -any_mode_retry: - if (!iio_device_try_claim_buffer_mode(indio_dev)) { - /* - * This one is a *bit* hacky. If we cannot claim buffer - * mode, then try direct mode so that we make sure - * things cannot concurrently change. And we just keep - * trying until we get one of the modes... - */ - if (!iio_device_claim_direct(indio_dev)) - goto any_mode_retry; + IIO_DEV_GUARD_CURRENT_MODE(indio_dev); - ret = max30102_get_temp(data, val, true); - iio_device_release_direct(indio_dev); - } else { - ret = max30102_get_temp(data, val, false); - iio_device_release_buffer_mode(indio_dev); - } + ret = max30102_get_temp(data, val, !iio_buffer_enabled(indio_dev)); if (ret) return ret; - ret = IIO_VAL_INT; - break; + return IIO_VAL_INT; + } case IIO_CHAN_INFO_SCALE: *val = 1000; /* 62.5 */ *val2 = 16; - ret = IIO_VAL_FRACTIONAL; - break; + return IIO_VAL_FRACTIONAL; + default: + return -EINVAL; } - - return ret; } static const struct iio_info max30102_info = { -- 2.52.0