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There are many situations where generic HID driver provides some basic level of support for certain device, but later this support (usually by implementing vendor-specific extensions of HID protocol) is extended and the support moved over to a separate (usually per-vendor) specific driver. This might bring a rather unpleasant suprise for users, as all of a sudden there is a new config option they have to enable in order to get any support for their device whatsoever, although previous kernel versions provided basic support through the generic driver. Which is rightfully seen as a regression. Fix this by including the entry for a particular device in hid_have_special_driver[] iff the specific config option has been specified, and let generic driver handle the device otherwise. Also make the behavior of hid_scan_report() (where the same decision is being taken on a per-report level) consistent. While at it, reshuffle the hid_have_special_driver[] a bit to restore the alphabetical ordering (first order by config option, and within those sections order by VID). This is considered a short-term solution, before generic way of giving precedence to special drivers and falling back to generic driver is figured out. While at it, fixup a missing entry for GFRM driver; thanks to Hans de Geode for spotting this (and for discovering a few issues in the conversion). Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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.