kernel/linux.git/drivers/iio/proximity, branch v7.0.10

iio: proximity: rfd77402: Fix completion race condition in IRQ mode

2026-03-14T11:15:32+00:00

In IRQ mode, the completion was being reinitialized after the measurement command had already been sent to the hardware. This created a race condition where the IRQ handler could call complete() before reinit_completion() was executed. Consequently, wait_for_completion_timeout() would fail to see the signal and wait until it timed out. Move reinit_completion() to occur before the measurement command is triggered to ensure the synchronization primitive is ready to capture the interrupt. Fixes: dc81be96a73a ("iio: proximity: rfd77402: Add interrupt handling support") Signed-off-by: Felix Gu Reviewed-by: Shrikant Raskar Cc: Signed-off-by: Jonathan Cameron

iio: proximity: hx9023s: Protect against division by zero in set_samp_freq

2026-02-23T08:24:38+00:00

Avoid division by zero when sampling frequency is unspecified. Fixes: 60df548277b7 ("iio: proximity: Add driver support for TYHX's HX9023S capacitive proximity sensor") Signed-off-by: Yasin Lee Reviewed-by: Andy Shevchenko Cc: Signed-off-by: Jonathan Cameron

iio: proximity: hx9023s: fix assignment order for __counted_by

2026-02-23T08:24:38+00:00

Initialize fw_size before copying firmware data into the flexible array member to match the __counted_by() annotation. This fixes the incorrect assignment order that triggers runtime safety checks. Fixes: e9ed97be4fcc ("iio: proximity: hx9023s: Added firmware file parsing functionality") Signed-off-by: Yasin Lee Reviewed-by: Andy Shevchenko Cc: Signed-off-by: Jonathan Cameron

iio: proximity: rfd77402: Add interrupt handling support

2026-01-29T17:50:08+00:00

Add interrupt handling support to enable event-driven data acquisition instead of continuous polling. This improves responsiveness, reduces CPU overhead, and supports low-power operation by allowing the system to remain idle until an interrupt occurs. Reviewed-by: Andy Shevchenko Signed-off-by: Shrikant Raskar Signed-off-by: Jonathan Cameron

iio: proximity: rfd77402: Document device private data structure

2026-01-29T17:49:00+00:00

Add kernel-doc style comments for struct rfd77402_data to describe the purpose of each member. Reviewed-by: Andy Shevchenko Signed-off-by: Shrikant Raskar Signed-off-by: Jonathan Cameron

iio: proximity: rfd77402: Use devm-managed mutex initialization

2026-01-29T17:48:45+00:00

Use devm_mutex_init() to tie the mutex lifetime to the device and improve debugging when CONFIG_DEBUG_MUTEXES is enabled. Reviewed-by: Andy Shevchenko Signed-off-by: Shrikant Raskar Signed-off-by: Jonathan Cameron

iio: proximity: rfd77402: Use kernel helper for result polling

2026-01-29T17:47:56+00:00

Replace the manually written polling loop with read_poll_timeout(), the kernel's standard helper for waiting on hardware status.This makes the code easier to read. Move the polling logic into a dedicated helper function, as it will be reused by future updates. Reviewed-by: Andy Shevchenko Signed-off-by: Shrikant Raskar Signed-off-by: Jonathan Cameron

iio: proximity: rfd77402: Align polling timeout with datasheet

2026-01-29T17:46:47+00:00

Update the polling delay to use a 100 ms timeout, as specified in the RFD77402 datasheet. Signed-off-by: Shrikant Raskar Reviewed-by: Andy Shevchenko Signed-off-by: Jonathan Cameron

iio: proximity: rfd77402: Reorder header includes

2026-01-16T20:07:01+00:00

Reorder header includes to follow kernel include ordering conventions. Signed-off-by: Shrikant Raskar Signed-off-by: Jonathan Cameron

iio: proximity: rfd77402: Add OF device ID for enumeration via DT

2026-01-11T12:38:14+00:00

Add an OF device ID table so the driver can bind automatically when the RFD77402 sensor is described in Device Tree. This enables proper enumeration via its compatible string and allows instantiation on DT-based platforms. Signed-off-by: Shrikant Raskar Signed-off-by: Jonathan Cameron