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Check that the control whose events we want to delete is still there. Normally this will always be the case, but I am not 100% certain if there aren't any corner cases when a device is forcibly unbound. In any case, this will satisfy static checkers and simply make it more robust. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reported-by: Shaobo <shaobo@cs.utah.edu> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.