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    USB HID: report descriptor of Cypress USB barcode readers needs fixup · 66da8769
    Jiri Kosina 提交于
    Certain versions of Cypress USB barcode readers (this problem is known to
    happen at least with PIDs 0xde61 and 0xde64) have report descriptor which
    has swapped usage min and usage max tag. This results in HID parser failing
    for report descriptor of these devices, as it (wrongly) requires allocating
    more usages than HID_MAX_USAGES.
    
    Solve this by walking through the report descriptor for such devices, and swap
    the usage min and usage max items (and their values) to be in proper order.
    Reported-by: NBret Towe <magnade@gmail.com>
    Signed-off-by: NJiri Kosina <jkosina@suse.cz>
    66da8769
hid-core.c 30.3 KB