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If some bits in a pin Pull-Up control register (PUPR) control pin pull-down instead of pin pull-up, there are two pinmux_bias_reg entries: a first one with the puen field filled in, listing pins with pull-up functionality, and a second one with the pud field filled in, listing pins with pull-down functionality. On encountering the second entry, where puen is NULL, the for-loop terminates early, causing the remaining bias registers not to be checked. In addition, sh_pfc_check_bias_reg() does not handle such entries. Fix this by treating pinmux_bias_reg.puen and pinmux_bias_reg.pud the same. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/29526d06fa223cffd785cdb264b756a202b11cea.1633615652.git.geert+renesas@glider.be
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.