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dcce85484d
After I dropped CONFIG_GENERIC_IOMAP, some PCI drivers started failing
to link when CONFIG_MMU is disabled:
ERROR: modpost: "pci_iounmap" [drivers/video/fbdev/i740fb.ko] undefined!
ERROR: modpost: "pci_iounmap" [drivers/video/fbdev/vt8623fb.ko] undefined!
ERROR: modpost: "pci_iomap_wc" [drivers/video/fbdev/vt8623fb.ko] undefined!
ERROR: modpost: "pci_iomap" [drivers/video/fbdev/vt8623fb.ko] undefined!
ERROR: modpost: "pci_iounmap" [drivers/video/fbdev/s3fb.ko] undefined!
...
It turns out that there were two mistakes in my patch: on !MMU I forgot
to enable CONFIG_GENERIC_PCI_IOMAP, and for Coldfire with MMU enabled,
teh GENERIC_IOMAP was left in place but incorrectly configured.
Fixes:
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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 reStructuredText 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.