kernel/linux.git/drivers/iio/adc, branch v6.6.131

iio: Use IRQF_NO_THREAD

2026-03-04T12:20:55+00:00

[ Upstream commit 04d390af97f2c28166f7ddfe1a6bda622e3a4766 ] The interrupt handler iio_trigger_generic_data_rdy_poll() will invoke other interrupt handler and this supposed to happen from within the hardirq. Use IRQF_NO_THREAD to forbid forced-threading. Signed-off-by: Sebastian Andrzej Siewior Reviewed-by: Andy Shevchenko Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin

iio: adc: exynos_adc: fix OF populate on driver rebind

2026-01-30T09:27:41+00:00

[ Upstream commit ea6b4feba85e996e840e0b661bc42793df6eb701 ] Since commit c6e126de43e7 ("of: Keep track of populated platform devices") child devices will not be created by of_platform_populate() if the devices had previously been deregistered individually so that the OF_POPULATED flag is still set in the corresponding OF nodes. Switch to using of_platform_depopulate() instead of open coding so that the child devices are created if the driver is rebound. Fixes: c6e126de43e7 ("of: Keep track of populated platform devices") Cc: stable@vger.kernel.org # 3.16 Signed-off-by: Johan Hovold Reviewed-by: Krzysztof Kozlowski Signed-off-by: Jonathan Cameron [ Adjust context ] Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

iio: adc: at91-sama5d2_adc: Fix potential use-after-free in sama5d2_adc driver

2026-01-30T09:27:38+00:00

commit dbdb442218cd9d613adeab31a88ac973f22c4873 upstream. at91_adc_interrupt can call at91_adc_touch_data_handler function to start the work by schedule_work(&st->touch_st.workq). If we remove the module which will call at91_adc_remove to make cleanup, it will free indio_dev through iio_device_unregister but quite a bit later. While the work mentioned above will be used. The sequence of operations that may lead to a UAF bug is as follows: CPU0 CPU1 | at91_adc_workq_handler at91_adc_remove | iio_device_unregister(indio_dev) | //free indio_dev a bit later | | iio_push_to_buffers(indio_dev) | //use indio_dev Fix it by ensuring that the work is canceled before proceeding with the cleanup in at91_adc_remove. Fixes: 23ec2774f1cc ("iio: adc: at91-sama5d2_adc: add support for position and pressure channels") Signed-off-by: Pei Xiao Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: adc: ad9467: fix ad9434 vref mask

2026-01-30T09:27:38+00:00

commit 92452b1760ff2d1d411414965d4d06f75e1bda9a upstream. The mask setting is 5 bits wide for the ad9434 (ref. data sheet register 0x18 FLEX_VREF). Apparently the settings from ad9265 were copied by mistake when support for the device was added to the driver. Fixes: 4606d0f4b05f ("iio: adc: ad9467: add support for AD9434 high-speed ADC") Reviewed-by: Andy Shevchenko Reviewed-by: Nuno Sá Reviewed-by: David Lechner Signed-off-by: Tomas Melin Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: adc: ad7280a: handle spi_setup() errors in probe()

2026-01-30T09:27:35+00:00

[ Upstream commit 6b39824ac4c15783787e6434449772bfb2e31214 ] The probe() function ignored the return value of spi_setup(), leaving SPI configuration failures undetected. If spi_setup() fails, the driver should stop initialization and propagate the error to the caller. Add proper error handling: check the return value of spi_setup() and return it on failure. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 2051f25d2a26 ("iio: adc: New driver for AD7280A Lithium Ion Battery Monitoring System") Signed-off-by: Pavel Zhigulin Reviewed-by: Marcelo Schmitt Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin

iio: adc: ti_am335x_adc: Limit step_avg to valid range for gcc complains

2026-01-11T14:21:53+00:00

[ Upstream commit c9fb952360d0c78bbe98239bd6b702f05c2dbb31 ] FIELD_PREP() checks that a value fits into the available bitfield, add a check for step_avg to fix gcc complains. which gcc complains about: drivers/iio/adc/ti_am335x_adc.c: In function 'tiadc_step_config': include/linux/compiler_types.h:572:38: error: call to '__compiletime_assert_491' declared with attribute error: FIELD_PREP: value too large for the field include/linux/mfd/ti_am335x_tscadc.h:58:29: note: in expansion of macro 'FIELD_PREP' #define STEPCONFIG_AVG(val) FIELD_PREP(GENMASK(4, 2), (val)) ^~~~~~~~~~ drivers/iio/adc/ti_am335x_adc.c:127:17: note: in expansion of macro 'STEPCONFIG_AVG' stepconfig = STEPCONFIG_AVG(ffs(adc_dev->step_avg[i]) - 1) Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202510102117.Jqxrw1vF-lkp@intel.com/ Signed-off-by: Pei Xiao Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin

iio: adc: rtq6056: Correct the sign bit index

2025-12-06T21:18:54+00:00

[ Upstream commit 9b45744bf09fc2a3287e05287141d6e123c125a7 ] The vshunt/current reported register is a signed 16bit integer. The sign bit index should be '15', not '16'. Fixes: 4396f45d211b ("iio: adc: Add rtq6056 support") Reported-by: Andy Hsu Signed-off-by: ChiYuan Huang Reviewed-by: David Lechner Cc: Signed-off-by: Jonathan Cameron [ adapted switch statement to existing if-else structure for sign_extend32() fix ] Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

iio: adc: ad7280a: fix ad7280_store_balance_timer()

2025-12-06T21:18:51+00:00

commit bd886cdcbf9e746f61c74035a3acd42e9108e115 upstream. Use correct argument to iio_str_to_fixpoint() to parse 3 decimal places. iio_str_to_fixpoint() has a bit of an unintuitive API where the fract_mult parameter is the multiplier of the first decimal place as if it was already an integer. So to get 3 decimal places, fract_mult must be 100 rather than 1000. Fixes: 96ccdbc07a74 ("staging:iio:adc:ad7280a: Standardize extended ABI naming") Signed-off-by: David Lechner Reviewed-by: Nuno Sá Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: adc: imx93_adc: load calibrated values even calibration failed

2025-11-24T09:29:28+00:00

[ Upstream commit 12c9b09e981ab14ebec8e4eefa946cbd26dd306b ] ADC calibration might fail because of the noise on reference voltage. To avoid calibration fail, need to meet the following requirement: ADC reference voltage Noise < 1.8V * 1/2^ENOB For the case which the ADC reference voltage on board do not meet the requirement, still load the calibrated values, so ADC can also work but maybe not that accurate. Signed-off-by: Haibo Chen Reviewed-by: Frank Li Reviewed-by: Primoz Fiser Link: https://patch.msgid.link/20250812-adc-v2-2-0260833f13b8@nxp.com Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin

iio: adc: spear_adc: mask SPEAR_ADC_STATUS channel and avg sample before setting register

2025-11-24T09:29:28+00:00

[ Upstream commit d75c7021c08e8ae3f311ef2464dca0eaf75fab9f ] avg sample info is a bit field coded inside the following bits: 5,6,7 and 8 of a device status register. Channel num info the same, but over bits: 1, 2 and 3. Mask both values in order to avoid touching other register bits, since the first info (avg sample), came from DT. Signed-off-by: Rodrigo Gobbi Reviewed-by: David Lechner Link: https://patch.msgid.link/20250717221559.158872-1-rodrigo.gobbi.7@gmail.com Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin