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71d04535e8
mmc_alloc_host() returns NULL pointer not PTR_ERR(), if it fails, so replace the IS_ERR() check with NULL pointer check. In commit418f7c2de1("mmc: meson-gx: use devm_mmc_alloc_host"), it checks NULL pointer not PTR_ERR, if devm_mmc_alloc_host() fails, so make it to return NULL pointer to keep same with mmc_alloc_host(), the drivers don't need to change the error handle when switch to use devm_mmc_alloc_host(). Fixes:80df83c2c5("mmc: core: add devm_mmc_alloc_host") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com> Link: https://lore.kernel.org/r/20230217024333.4018279-1-yangyingliang@huawei.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.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.