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libata-sff.c checks for legacy mode by testing if both primary and secondary ports on a controller are in legacy mode and selects legacy if either one is. However on some south bridge chips (e.g AMD SB600/SB700) the secondary port is not wired, and when it is disabled by setting the disable bit in the PCI header it appears as a fixed legacy port. Prevent incorrect detection by not testing ports that are marked as 'dummy' tj: Addressed Sergei's review points. Other style edits. Signed-off-by: Darren Stevens <darren@stevens-zone.net> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.