43582265be
With the SoC cpuidle handling fixed for cpu_pm, we can now start to return NOTIFY_BAD if there there are pending gpio interrupts. This way the deeper SoC idle states can get blocked, and gpio latency is improved in some cases. Note that this will not help with the latency if the SoC has already entered a deeper idle state. Note that this patch depends on cpu_pm properly handling the errors returned by notifiers. For omap variants, this is fixed with patch "ARM: OMAP2+: Handle errors for cpu_pm". Cc: Dave Gerlach <d-gerlach@ti.com> Cc: Grygorii Strashko <grygorii.strashko@ti.com> Cc: Keerthy <j-keerthy@ti.com> Cc: Ladislav Michl <ladis@linux-mips.org> Cc: Russell King <rmk+kernel@armlinux.org.uk> Cc: Tero Kristo <t-kristo@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Link: https://lore.kernel.org/r/20200304225433.37336-3-tony@atomide.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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.