kernel/linux.git/drivers/input/mouse/focaltech.c, branch v7.0-rc7

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

Input: mouse - use sizeof(*pointer) instead of sizeof(type)

2024-06-03T04:32:02+00:00

It is preferred to use sizeof(*pointer) instead of sizeof(type) due to the type of the variable can change and one needs not change the former (unlike the latter). This patch has no effect on runtime behavior. Signed-off-by: Erick Archer Link: https://lore.kernel.org/r/AS8PR02MB7237FB736DBF67A58798FDF38BFE2@AS8PR02MB7237.eurprd02.prod.outlook.com Signed-off-by: Dmitry Torokhov

Input: focaltech - use explicitly signed char type

2023-03-20T06:07:02+00:00

The recent change of -funsigned-char causes additions of negative numbers to become additions of large positive numbers, leading to wrong calculations of mouse movement. Change these casts to be explicitly signed, to take into account negative offsets. Fixes: 3bc753c06dd0 ("kbuild: treat char as always unsigned") Signed-off-by: Jason A. Donenfeld Reviewed-by: Hans de Goede Cc: stable@vger.kernel.org Link: https://bugzilla.kernel.org/show_bug.cgi?id=217211 Link: https://lore.kernel.org/r/20230318133010.1285202-1-Jason@zx2c4.com Signed-off-by: Dmitry Torokhov

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32+00:00

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman

Input: psmouse - cleanup Focaltech code

2016-10-25T00:19:25+00:00

psmouse->name "Focaltech Touchpad" is an overkill. In xinput it is too long as "FocaltechPS/2 Focaltech Focaltech Touchpad" In focaltech_report_state() pointer to psmouse->dev is already stored as *dev Signed-off-by: Dmitry Tunin Signed-off-by: Dmitry Torokhov

Input: focaltech - mark focaltech_set_resolution() static

2016-09-05T17:42:11+00:00

We get 1 warning when building kernel with W=1: drivers/input/mouse/focaltech.c:393:6: warning: no previous prototype for 'focaltech_set_resolution' [-Wmissing-prototypes] In fact, this function is only used in the file in which it is declared and don't need a declaration, but can be made static. So this patch marks it 'static'. Signed-off-by: Baoyou Xie Acked-by: Arnd Bergmann Signed-off-by: Dmitry Torokhov

Input: psmouse - rearrange Focaltech init code

2015-12-17T23:23:54+00:00

The fact that we were calling focaltech_init() even when Focaltech support is disabled was confusing. Rearrange the code so that if support is disabled we continue to fall through the rest of protocol probing code until we get to full reset that Focaltech devices need to work properly. Also, replace focaltech_init() with a stub now that it is only called when protocol is enabled. Reviewed-by: Hans de Goede Reviewed-by: Pali Rohár Tested-by: Marcin Sochacki Tested-by: Till Signed-off-by: Dmitry Torokhov

Input: focaltech - report finger width to userspace

2015-06-02T17:46:10+00:00

Focaltech touchpads report finger width in packet[5] of absolute packet. Range for width in raw format is 0x10 - 0x70. Second half-byte is always 0. 0xff is reported, when a large contact area is detected. This can be handled in userspace. Signed-off-by: Dmitry Tunin Signed-off-by: Dmitry Torokhov

Input: psmouse - disable "palm detection" in the focaltech driver

2015-03-07T21:40:21+00:00

Apparently, the threshold for large contact area seems to be rather low on some devices, causing the touchpad to frequently freeze during normal usage. Because we do now know how we are supposed to use the value in question, this commit just drops the related code completely. Signed-off-by: Mathias Gottschlag Signed-off-by: Dmitry Torokhov