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144337eeefbec6bbc7e9b51a6d58551baad03d40
linux/drivers/input/touchscreen
History
Dmitry Torokhov 144337eeef Input: mms114 - replace udelay with usleep_range 
The driver currently uses udelay(MMS114_I2C_DELAY) (50us) to ensure a
mandatory delay between I2C transfers in __mms114_read_reg() and
mms114_write_reg().

Both functions invoke underlying I2C core operations (i2c_transfer,
i2c_master_send) which acquire mutexes and sleep. Furthermore, the
interrupt handler mms114_interrupt() is registered as a threaded IRQ
handler. Since the entire execution path is fully sleepable,
busy-waiting with udelay() for 50us unnecessarily wastes CPU cycles.

Replace udelay() with usleep_range() to allow the CPU to enter low-power
states or execute other tasks during the delay.

Assisted-by: Antigravity:gemini-3.5-flash
Link: https://patch.msgid.link/20260616050912.1531241-4-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2026-06-22 23:19:21 -07:00
..
88pm860x-ts.c
Input: 88pm860x - use cleanup facility for device_node
2024-10-19 21:21:41 -07:00
ad7877.c
Input: ad7877 - use guard notation when acquiring mutexes/locks
2026-03-24 21:14:18 -07:00
ad7879-i2c.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
ad7879-spi.c
Input: ad7879 - use device core to create driver-specific device attributes
2023-09-06 14:23:47 -07:00
ad7879.c
Input: ad7879 - use guard notation when acquiring mutexes
2026-03-24 21:14:19 -07:00
ad7879.h
Input: ad7879 - use device core to create driver-specific device attributes
2023-09-06 14:23:47 -07:00
ads7846.c
Input: ads7846 - don't use scratch for tx_buf when clearing register
2026-06-10 15:47:47 -07:00
apple_z2.c
Input: apple_z2 - fix reading incorrect reports after exiting sleep
2025-12-18 12:17:10 -08:00
ar1021_i2c.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
atmel_mxt_ts.c
Merge tag 'v7.1-rc6' into next
2026-05-31 19:43:25 -07:00
auo-pixcir-ts.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
bcm_iproc_tsc.c
input: Fix typos in comments across various files
2024-09-30 07:58:33 -07:00
bu21013_ts.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
bu21029_ts.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
chipone_icn8318.c
Input: chipone_icn8318 - use guard notation when acquiring mutex
2026-03-24 21:14:22 -07:00
chipone_icn8505.c
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
colibri-vf50-ts.c
Input: colibri-vf50-ts - make use of the helper function dev_err_probe()
2024-08-19 10:22:56 -07:00
cy8ctma140.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
cy8ctmg110_ts.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
cyttsp5.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
cyttsp_core.c
Input: cyttsp - use guard notation when acquiring mutex
2026-03-24 21:14:23 -07:00
cyttsp_core.h
Input: cyttsp4 - remove driver
2024-08-05 10:48:49 -07:00
cyttsp_i2c.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
cyttsp_spi.c
Input: cyttsp - use EXPORT_GPL_SIMPLE_DEV_PM_OPS()
2023-01-27 14:49:53 -08:00
da9034-ts.c
…
da9052_tsi.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dynapro.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
edt-ft5x06.c
Input: edt-ft5x06 - fix use-after-free in debugfs teardown
2026-04-19 17:54:06 -07:00
eeti_ts.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
egalax_ts_serial.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
egalax_ts.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
ektf2127.c
Input: ektf2127 - use guard notation when acquiring mutex
2026-03-24 21:14:24 -07:00
elants_i2c.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
elo.c
Input: elo - use guard notation when acquiring mutex
2026-03-24 21:14:26 -07:00
exc3000.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
fsl-imx25-tcq.c
Input: remove unneeded 'fast_io' parameter in regmap_config
2025-08-21 12:00:59 -07:00
fujitsu_ts.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
goodix_berlin_core.c
Input: goodix-berlin - report a resolution of 10 units/mm
2026-03-25 09:08:17 -07:00
goodix_berlin_i2c.c
Input: goodix_berlin - add support for Berlin-A series
2025-03-10 10:46:08 -07:00
goodix_berlin_spi.c
Input: goodix_berlin - add support for Berlin-A series
2025-03-10 10:46:08 -07:00
goodix_berlin.h
Input: goodix_berlin - add support for Berlin-A series
2025-03-10 10:46:08 -07:00
goodix_fwupload.c
Input: goodix - switch to using cleanup functions in firmware code
2026-03-24 21:14:27 -07:00
goodix.c
Input: goodix - clamp the device-reported contact count
2026-06-22 20:44:12 -07:00
goodix.h
Input: goodix - remove setting of RST pin to input
2025-10-13 09:35:26 -07:00
gunze.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
hampshire.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
hideep.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
himax_hx852x.c
Input: add Himax HX852x(ES) touchscreen driver
2025-09-17 14:44:02 -07:00
himax_hx83112b.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
hp680_ts_input.c
…
htcpen.c
…
hycon-hy46xx.c
Input: hycon-hy46xx - use guard notation when acquiring mutex
2026-03-24 21:14:49 -07:00
hynitron_cstxxx.c
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
hynitron-cst816x.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
ili210x.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
ilitek_ts_i2c.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
imagis.c
Input: imagis - use guard notation when acquiring mutex
2026-03-24 21:14:50 -07:00
imx6ul_tsc.c
Input: imx6ul_tsc - use guard notation when acquiring mutex
2026-03-24 21:14:50 -07:00
inexio.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
ipaq-micro-ts.c
Input: ipaq-micro-ts - use guard notation when acquiring mutex/spinlock
2026-03-24 21:14:51 -07:00
iqs5xx.c
Input: iqs5xx - drop unused i2c driver_data
2026-05-30 22:11:56 -07:00
iqs7211.c
Input: iqs7211 - use cleanup facility for fwnodes
2026-03-24 21:14:53 -07:00
jornada720_ts.c
…
Kconfig
Input: Add support for Wacom W9000-series penabled touchscreens
2026-05-29 22:31:40 -07:00
lpc32xx_ts.c
Input: lpc32xx_ts - use guard notation when acquiring mutex
2026-03-24 21:14:53 -07:00
mainstone-wm97xx.c
Input: switch back to struct platform_driver::remove()
2024-10-15 11:43:25 -07:00
Makefile
Input: Add support for Wacom W9000-series penabled touchscreens
2026-05-29 22:31:40 -07:00
max11801_ts.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
mc13783_ts.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
melfas_mip4.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
migor_ts.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
mms114.c
Input: mms114 - replace udelay with usleep_range
2026-06-22 23:19:21 -07:00
msg2638.c
Input: msg2638 - use guard notation when acquiring mutex
2026-03-24 21:14:56 -07:00
mtouch.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
mxs-lradc-ts.c
Input: mxs-lradc-ts - use guard notation when acquiring spinlock
2026-03-25 07:53:57 -07:00
novatek-nvt-ts.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
penmount.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
pixcir_i2c_ts.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
raspberrypi-ts.c
Input: raspberrypi-ts - use cleanup facility for device_node
2024-10-19 21:21:43 -07:00
raydium_i2c_ts.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
resistive-adc-touch.c
Input: resistive-adc-touch - simplify with dev_err_probe()
2023-07-07 16:54:29 -07:00
rohm_bu21023.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
s6sy761.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
silead.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
sis_i2c.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
st1232.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
stmfts.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
stmpe-ts.c
Input: stmpe-ts - use module alias instead of device table
2025-04-28 12:14:12 -07:00
sun4i-ts.c
Input: switch back to struct platform_driver::remove()
2024-10-15 11:43:25 -07:00
sur40.c
Input: sur40 - use guard notation when acquiring spinlock
2026-03-25 07:53:59 -07:00
surface3_spi.c
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
sx8654.c
Input: sx8654 - use IRQF_NOAUTOEN when requesting interrupt
2026-03-25 07:53:59 -07:00
ti_am335x_tsc.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
touchit213.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
touchright.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
touchwin.c
Input: touchwin - reset the packet index on every complete packet
2026-06-14 13:58:16 -07:00
tps6507x-ts.c
…
ts4800-ts.c
Input: ts4800-ts - use cleanup facility for device_node
2024-10-19 21:21:43 -07:00
tsc40.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
tsc200x-core.c
Input: include export.h in modules using EXPORT_SYMBOL*()
2025-08-21 12:00:59 -07:00
tsc200x-core.h
Input: tsc2004/5 - fix handling of VIO power supply
2024-08-04 18:10:40 -07:00
tsc2004.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
tsc2005.c
Input: tsc2004/5 - fix handling of VIO power supply
2024-08-04 18:10:40 -07:00
tsc2007_core.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
tsc2007_iio.c
Input: tsc2007 - use guard notation when acquiring mutexes
2026-03-25 07:53:59 -07:00
tsc2007.h
Input: tsc2007 - accept standard properties
2024-12-10 16:17:30 -08:00
usbtouchscreen.c
Input: usbtouchscreen - clamp NEXIO data_len/x_len to URB buffer size
2026-04-26 21:00:25 -07:00
wacom_i2c.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
wacom_w8001.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
wacom_w9000.c
Input: Add support for Wacom W9000-series penabled touchscreens
2026-05-29 22:31:40 -07:00
wdt87xx_i2c.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
wm97xx-core.c
Input: wm97xx - use guard notation when acquiring mutex
2026-03-25 07:54:00 -07:00
wm831x-ts.c
Input: switch back to struct platform_driver::remove()
2024-10-15 11:43:25 -07:00
wm9705.c
Input: include export.h in modules using EXPORT_SYMBOL*()
2025-08-21 12:00:59 -07:00
wm9712.c
Input: include export.h in modules using EXPORT_SYMBOL*()
2025-08-21 12:00:59 -07:00
wm9713.c
Input: include export.h in modules using EXPORT_SYMBOL*()
2025-08-21 12:00:59 -07:00
zet6223.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
zforce_ts.c
Input: Use named initializers for arrays of i2c_device_data
2026-05-30 22:10:47 -07:00
zinitix.c
Input: zinitix - use guard notation when acquiring mutex
2026-03-25 07:54:00 -07:00