kernel/drivers/input/mouse/elan_i2c_smbus.c, branch linux-6.18.y

Merge branch 'next' into for-linus

2020-12-15T00:27:23Z

Prepare input updates for 5.11 merge window.

Input: elan_i2c - add new trackpoint report type 0x5F

2020-12-11T08:15:04Z

The 0x5F is a new trackpoint report type used by some modules. Signed-off-by: Jingle Wu Link: https://lore.kernel.org/r/20201211071511.32349-1-jingle.wu@emc.com.tw Signed-off-by: Dmitry Torokhov

Input: elan_i2c - fix firmware update on newer ICs

2020-11-12T04:13:12Z

The argument to iap page type command depends on the firmware page size. Fixes: bfd9b92bc8f9 ("Input: elan_i2c - handle firmware updated on newer ICs") Signed-off-by: Jingle Wu Signed-off-by: Dmitry Torokhov

Input: elan_i2c - add support for high resolution reports

2020-07-21T17:11:18Z

Newer controllers (identified as "pattern" version 2) send higher resolution reports, with 16-bit X and Y coordinates (previous generations used 12-bit values). These new high resolution reports use report ID of 0x60. SMbus controllers use the same buffer size for both the new and old reports, and because of that high resolution reports no longer carry area of contact data with SMbus. Signed-off-by: Jingle Wu Link: https://lore.kernel.org/r/20200710054116.5529-1-jingle.wu@emc.com.tw Signed-off-by: Dmitry Torokhov

Input: elan_i2c - do not constantly re-query pattern ID

2020-07-21T00:35:31Z

We do not need to constantly re-query pattern ID, we can instead query it once and then pass to methods that need it. Signed-off-by: Dmitry Torokhov

Input: elan_i2c - handle firmware updated on newer ICs

2020-07-18T00:36:01Z

Newer ICs with IC type value starting with 0x0D and newer bootloader code use 128-byte firmware pages. Their bootloader also needs to be switched to proper mode before executing firmware update. Signed-off-by: Jingle Wu Signed-off-by: Dmitry Torokhov

Input: elan_i2c - add support for different firmware page sizes

2020-07-18T00:36:00Z

Prepare driver for devices that use different sizes of firmware pages. Signed-off-by: Jingle Wu Signed-off-by: Dmitry Torokhov

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55Z

Based on 2 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 version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Enrico Weigelt Reviewed-by: Kate Stewart Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman

Input: elan_i2c_smbus - cast sizeof to int for comparison

2018-08-01T23:05:55Z

Comparing an int to a size, which is unsigned, causes the int to become unsigned, giving the wrong result. i2c_smbus_read_block_data can return the result of i2c_smbus_xfer, whih can return a negative error code. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @@ int x; expression e,e1; identifier f; @@ *x = f(...); ... when != x = e1 when != if (x < 0 || ...) { ... return ...; } *x < sizeof(e) // Signed-off-by: Julia Lawall Signed-off-by: Dmitry Torokhov

Input: elan_i2c_smbus - fix more potential stack buffer overflows

2018-06-22T00:20:41Z

Commit 40f7090bb1b4 ("Input: elan_i2c_smbus - fix corrupted stack") fixed most of the functions using i2c_smbus_read_block_data() to allocate a buffer with the maximum block size. However three functions were left unchanged: * In elan_smbus_initialize(), increase the buffer size in the same way. * In elan_smbus_calibrate_result(), the buffer is provided by the caller (calibrate_store()), so introduce a bounce buffer. Also name the result buffer size. * In elan_smbus_get_report(), the buffer is provided by the caller but happens to be the right length. Add a compile-time assertion to ensure this remains the case. Cc: # 3.19+ Signed-off-by: Ben Hutchings Reviewed-by: Benjamin Tissoires Signed-off-by: Dmitry Torokhov