3e01ae2612
The following warning is seen on systems with broken clock divider. INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 0 PID: 1 Comm: swapper Not tainted 5.1.0-09698-g1fb3b52 #1 Hardware name: ARM Integrator/CP (Device Tree) [<c0011be8>] (unwind_backtrace) from [<c000ebb8>] (show_stack+0x10/0x18) [<c000ebb8>] (show_stack) from [<c07d3fd0>] (dump_stack+0x18/0x24) [<c07d3fd0>] (dump_stack) from [<c0060d48>] (register_lock_class+0x674/0x6f8) [<c0060d48>] (register_lock_class) from [<c005de2c>] (__lock_acquire+0x68/0x2128) [<c005de2c>] (__lock_acquire) from [<c0060408>] (lock_acquire+0x110/0x21c) [<c0060408>] (lock_acquire) from [<c07f755c>] (_raw_spin_lock+0x34/0x48) [<c07f755c>] (_raw_spin_lock) from [<c0536c8c>] (pl111_display_enable+0xf8/0x5fc) [<c0536c8c>] (pl111_display_enable) from [<c0502f54>] (drm_atomic_helper_commit_modeset_enables+0x1ec/0x244) Since commit eedd6033b4c8 ("drm/pl111: Support variants with broken clock divider"), the spinlock is not initialized if the clock divider is broken. Initialize it earlier to fix the problem. Fixes: eedd6033b4c8 ("drm/pl111: Support variants with broken clock divider") Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/1557758781-23586-1-git-send-email-linux@roeck-us.net
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.