This is a note to let you know that I've just added the patch titled
iio: adc: ti-ads1119: fix sample size in scan struct for triggered
to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-linus branch.
The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.
If you have any questions about this process, please let me know.
From 54d394905c92b9ecc65c1f9b2692c8e10716d8e1 Mon Sep 17 00:00:00 2001 From: Javier Carrasco javier.carrasco.cruz@gmail.com Date: Mon, 2 Dec 2024 20:18:44 +0100 Subject: iio: adc: ti-ads1119: fix sample size in scan struct for triggered buffer
This device returns signed, 16-bit samples as stated in its datasheet (see 8.5.2 Data Format). That is in line with the scan_type definition for the IIO_VOLTAGE channel, but 'unsigned int' is being used to read and push the data to userspace.
Given that the size of that type depends on the architecture (at least 2 bytes to store values up to 65535, but its actual size is often 4 bytes), use the 's16' type to provide the same structure in all cases.
Fixes: a9306887eba4 ("iio: adc: ti-ads1119: Add driver") Signed-off-by: Javier Carrasco javier.carrasco.cruz@gmail.com Reviewed-by: Francesco Dolcini francesco.dolcini@toradex.com Link: https://patch.msgid.link/20241202-ti-ads1119_s16_chan-v1-1-fafe3136dc90@gmai... Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com --- drivers/iio/adc/ti-ads1119.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/adc/ti-ads1119.c b/drivers/iio/adc/ti-ads1119.c index 2615a275acb3..c268e27eec12 100644 --- a/drivers/iio/adc/ti-ads1119.c +++ b/drivers/iio/adc/ti-ads1119.c @@ -500,7 +500,7 @@ static irqreturn_t ads1119_trigger_handler(int irq, void *private) struct iio_dev *indio_dev = pf->indio_dev; struct ads1119_state *st = iio_priv(indio_dev); struct { - unsigned int sample; + s16 sample; s64 timestamp __aligned(8); } scan; unsigned int index;