8eccf35a6f
[ Upstream commit 3c28b91380dd1183347d32d87d820818031ebecf ] usb_control_msg returns in case of a successfully sent message the number of sent bytes as a positive number. Don't use this value as a return value for stk_camera_read_reg, as a non-zero return value is used as an error condition in some cases when stk_camera_read_reg is called. Signed-off-by: Andreas Pape <ap@ca-pape.de> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.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.
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.