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cb1d0f5788
A bulk callback transfer can be initiated from two places -
inside kernel interface or from user interface. However,
the callback data pointer 'cb_data' is used for tracking both
sets of data pointer. This commit tracks the callback
data pointer from user interface (named as 'cb_userdata') separately,
in the bulk transfer service callback.
This is esentially done by adding a 'void __user *cb_userdata' for
tracking __user pointers in vchiq_bulk and vchiq_completion_data
structs. Furthermore, the 'cb_userdata' data pointer is appended to
the vchiq_service's callback signature.
Separating the two callback data pointers ('cb_data' and 'cb_userdata')
fixes the sparse warnings around mixing userspace and kernel space
pointers.
As there are no additional sparse warnings left for vc04_services,
drop the relevant entry from the TODO.
Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Link: https://lore.kernel.org/r/20241023110406.885199-7-umang.jain@ideasonboard.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 reStructuredText 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.