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f1da567f1d
Some drivers (e.g dwc3) first try to get an IRQ byname and then fall back to the one at index 0. In this case we do not want the error(s) printed by platform_get_irq_byname(). This commit adds a new platform_get_irq_byname_optional(), which does not print errors, for this. While at it also improve the kdoc text for platform_get_irq_byname() a bit. BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=205037 Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://lore.kernel.org/r/20191005210449.3926-2-hdegoede@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.