Jim Broadus 93b6604c5a i2c: Allow recovery of the initial IRQ by an I2C client device. ... A previous change allowed I2C client devices to discover new IRQs upon reprobe by clearing the IRQ in i2c_device_remove. However, if an IRQ was assigned in i2c_new_device, that information is lost. For example, the touchscreen and trackpad devices on a Dell Inspiron laptop are I2C devices whose IRQs are defined by ACPI extended IRQ types. The client device structures are initialized during an ACPI walk. After removing the i2c_hid device, modprobe fails. This change caches the initial IRQ value in i2c_new_device and then resets the client device IRQ to the initial value in i2c_device_remove. Fixes: 6f108dd70d ("i2c: Clear client->irq in i2c_device_remove") Signed-off-by: Jim Broadus <jbroadus@gmail.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com> [wsa: this is an easy to backport fix for the regression. We will refactor the code to handle irq assignments better in general.] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>		2019-02-24 14:43:22 +01:00
..
algos	i2c: algo-bit: convert to SPDX header	2019-02-05 14:05:03 +01:00
busses	i2c: ocores: turn incomplete kdoc into a comment	2019-02-24 14:38:03 +01:00
muxes	Merge branch 'i2c/for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2018-10-29 14:44:03 -07:00
i2c-boardinfo.c	i2c: i2c-boardinfo: fix memory leaks on devinfo	2017-11-27 19:14:29 +01:00
i2c-core-acpi.c	i2c: acpi: Introduce i2c_acpi_get_i2c_resource() helper	2018-12-03 21:40:02 +02:00
i2c-core-base.c	i2c: Allow recovery of the initial IRQ by an I2C client device.	2019-02-24 14:43:22 +01:00
i2c-core-of.c	i2c: of: Try to find an I2C adapter matching the parent	2019-02-05 13:41:49 +01:00
i2c-core-slave.c	i2c: remove i2c_lock_adapter and use i2c_lock_bus directly	2018-07-13 00:09:37 +02:00
i2c-core-smbus.c	i2c: core-smbus: don't trace smbus_reply data on errors	2019-02-14 18:01:33 +01:00
i2c-core.h	i2c: make i2c_check_addr_validity() static	2018-03-24 14:07:23 +01:00
i2c-dev.c	i2c: expand minor range when registering chrdev region	2019-02-15 09:53:34 +01:00
i2c-mux.c	Merge branch 'i2c/for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2018-08-21 17:40:46 -07:00
i2c-slave-eeprom.c	i2c: Drop owner assignment from i2c_driver	2015-08-10 08:37:35 +02:00
i2c-smbus.c	i2c: i2c-smbus: add of_i2c_setup_smbus_alert	2017-10-28 23:42:47 +02:00
i2c-stub.c	treewide: kzalloc() -> kcalloc()	2018-06-12 16:19:22 -07:00
Kconfig	treewide: surround Kconfig file paths with double quotes	2018-12-22 00:25:54 +09:00
Makefile	i2c: don't use any __deprecated handling anymore	2018-08-24 17:26:43 +02:00