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Guenter Roeck 2539b15d50 hwmon: (npcm750-pwm-fan) Fix crash observed when instantiating nuvoton,npcm750-pwm-fan 
Commit 89fec128d5 ("hwmon: (npcm750-pwm-fan) Add NPCM8xx support")
introduced support for PWM fans on Nuvoton's npcm845 SoC. This chip
supports three PWM modules with four PWM channels each. The older npcm750
only supported two PWM modules. The commit did not take into account that
the older SoC only supported two PWM modules. This results in a crash if
npcm750 is instantiated when the code attempts to instantiate the
non-existing third PWM module.

Unable to handle kernel paging request at virtual address e0aa2000 when write
[e0aa2000] *pgd=04ab6811, *pte=00000000, *ppte=00000000
Internal error: Oops: 807 [#1] SMP ARM
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Tainted: G                 N 6.7.0-next-20240112-dirty #3
Hardware name: NPCM7XX Chip family
PC is at npcm7xx_pwm_fan_probe+0x204/0x890
LR is at arm_heavy_mb+0x1c/0x38

Fix the problem by detecting the number of supported PWM modules in the
probe function and only instantiating the supported modules.

Fixes: 89fec128d5 ("hwmon: (npcm750-pwm-fan) Add NPCM8xx support")
Cc: Tomer Maimon <tmaimon77@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2024-01-14 07:44:38 -08:00
arch fbdev fixes and cleanups for 6.8-rc1: 2024-01-12 14:38:08 -08:00
block for-6.8/block-2024-01-08 2024-01-11 13:58:04 -08:00
certs This update includes the following changes: 2023-11-02 16:15:30 -10:00
crypto crypto: scomp - fix req->dst buffer overflow 2023-12-29 11:25:56 +08:00
Documentation RCU pull request for v6.8 2024-01-12 16:35:58 -08:00
drivers hwmon: (npcm750-pwm-fan) Fix crash observed when instantiating nuvoton,npcm750-pwm-fan 2024-01-14 07:44:38 -08:00
fs Description for this pull request: 2024-01-12 18:05:56 -08:00
include fix buggered locking in bch2_ioctl_subvolume_destroy() 2024-01-12 18:04:01 -08:00
init header cleanups for 6.8 2024-01-10 16:43:55 -08:00
io_uring for-6.8/io_uring-2024-01-08 2024-01-11 14:19:23 -08:00
ipc shm: Slim down dependencies 2023-12-20 19:26:31 -05:00
kernel RCU pull request for v6.8 2024-01-12 16:35:58 -08:00
lib Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
LICENSES
mm Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
net for-6.8/io_uring-2024-01-08 2024-01-11 14:19:23 -08:00
rust Rust changes for v6.8 2024-01-11 13:05:41 -08:00
samples media updates for v6.8-rc1 2024-01-12 14:29:48 -08:00
scripts Another moderately busy cycle for documentation, including: 2024-01-11 19:46:52 -08:00
security misc cleanups (the part that hadn't been picked by individual fs trees) 2024-01-11 20:23:50 -08:00
sound sound updates for 6.8-rc1 2024-01-12 11:55:28 -08:00
tools RCU pull request for v6.8 2024-01-12 16:35:58 -08:00
usr usr/Kconfig: fix typos of "its" 2023-12-20 15:02:58 -08:00
virt vfs-6.8.misc 2024-01-08 10:26:08 -08:00
.clang-format clang-format: Update with v6.7-rc4's for_each macro list 2023-12-08 23:54:38 +01:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore kbuild: rpm-pkg: generate kernel.spec in rpmbuild/SPECS/ 2023-10-03 20:49:09 +09:00
.mailmap Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
.rustfmt.toml
COPYING
CREDITS Another moderately busy cycle for documentation, including: 2024-01-11 19:46:52 -08:00
Kbuild
Kconfig
MAINTAINERS pwm: Changes for v6.8-rc1 2024-01-12 14:59:50 -08:00
Makefile Quite a lot of kexec work this time around. Many singleton patches in 2024-01-09 11:46:20 -08:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.