78755373aa
[ Upstream commit ede090f5a438e97d0586f64067bbb956e30a2a31 ] This patch fixes the return value for altera_spi_txrx. It should return 1 for interrupt transfer mode, and return 0 for polling transfer mode. The altera_spi_txrx() implements the spi_controller.transfer_one callback. According to the spi-summary.rst, the transfer_one should return 0 when transfer is finished, return 1 when transfer is still in progress. Signed-off-by: Xu Yilun <yilun.xu@intel.com> Link: https://lore.kernel.org/r/1609219662-27057-2-git-send-email-yilun.xu@intel.com Signed-off-by: Mark Brown <broonie@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.
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.