linux-kernel - [PATCH next 1/4] iio: sca3000: cache SPI device ID in probe

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20260130214323.236389-2-harshit.m.mogalapalli@oracle.com>
Date: Fri, 30 Jan 2026 13:43:08 -0800
From: Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
To: Jonathan Cameron <jic23@...nel.org>, David Lechner <dlechner@...libre.com>,
        Nuno Sá <nuno.sa@...log.com>,
        Andy Shevchenko <andy@...nel.org>,
        Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>,
        Andrew Ijano <andrew.ijano@...il.com>,
        linux-iio@...r.kernel.org (open list:IIO SUBSYSTEM AND DRIVERS),
        linux-kernel@...r.kernel.org (open list)
Cc: kernel-janitors@...r.kernel.org,
        Andy Shevchenko <andriy.shevchenko@...el.com>
Subject: [PATCH next 1/4] iio: sca3000: cache SPI device ID in probe

Store the spi_device_id at probe entry and reuse it for the name and
chip info instead of calling spi_get_device_id() repeatedly.

Reuse the local dev pointer for resource managed helpers. While at it,
reshuffle variable list in a reverse Christmas tree order.

No functional change intended.

Suggested-by: Andy Shevchenko <andriy.shevchenko@...el.com>
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
---
 drivers/iio/accel/sca3000.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/iio/accel/sca3000.c b/drivers/iio/accel/sca3000.c
index 9ef4d6e27466..afe6ef61a53b 100644
--- a/drivers/iio/accel/sca3000.c
+++ b/drivers/iio/accel/sca3000.c
@@ -1439,11 +1439,13 @@ static const struct iio_info sca3000_info = {
 
 static int sca3000_probe(struct spi_device *spi)
 {
-	int ret;
+	const struct spi_device_id *id = spi_get_device_id(spi);
+	struct device *dev = &spi->dev;
 	struct sca3000_state *st;
 	struct iio_dev *indio_dev;
+	int ret;
 
-	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
 	if (!indio_dev)
 		return -ENOMEM;
 
@@ -1451,10 +1453,9 @@ static int sca3000_probe(struct spi_device *spi)
 	spi_set_drvdata(spi, indio_dev);
 	st->us = spi;
 	mutex_init(&st->lock);
-	st->info = &sca3000_spi_chip_info_tbl[spi_get_device_id(spi)
-					      ->driver_data];
+	st->info = &sca3000_spi_chip_info_tbl[id->driver_data];
 
-	indio_dev->name = spi_get_device_id(spi)->name;
+	indio_dev->name = id->name;
 	indio_dev->info = &sca3000_info;
 	if (st->info->temp_output) {
 		indio_dev->channels = sca3000_channels_with_temp;
@@ -1466,7 +1467,7 @@ static int sca3000_probe(struct spi_device *spi)
 	}
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = devm_iio_kfifo_buffer_setup(&spi->dev, indio_dev,
+	ret = devm_iio_kfifo_buffer_setup(dev, indio_dev,
 					  &sca3000_ring_setup_ops);
 	if (ret)
 		return ret;
-- 
2.50.1