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[ Upstream commit39961bd6b7] rockchip_emmc_phy_init() return variable is not set with the error value if clk_get() failed. 'emmcclk' is optional, thus use clk_get_optional() and if the return value != NULL make error processing and set the return code accordingly. Fixes:52c0624a10phy: rockchip-emmc: Set phyctrl_frqsel based on card clock Signed-off-by: Chris Ruehl <chris.ruehl@gtsys.com.hk> Reviewed-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20201210080454.17379-1-chris.ruehl@gtsys.com.hk Signed-off-by: Vinod Koul <vkoul@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.