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1============2Device table3============4 5Matching of PCMCIA devices to drivers is done using one or more of the6following criteria:7 8- manufactor ID9- card ID10- product ID strings _and_ hashes of these strings11- function ID12- device function (actual and pseudo)13 14You should use the helpers in include/pcmcia/device_id.h for generating the15struct pcmcia_device_id[] entries which match devices to drivers.16 17If you want to match product ID strings, you also need to pass the crc3218hashes of the string to the macro, e.g. if you want to match the product ID19string 1, you need to use20 21PCMCIA_DEVICE_PROD_ID1("some_string", 0x(hash_of_some_string)),22 23If the hash is incorrect, the kernel will inform you about this in "dmesg"24upon module initialization, and tell you of the correct hash.25 26You can determine the hash of the product ID strings by catting the file27"modalias" in the sysfs directory of the PCMCIA device. It generates a string28in the following form:29pcmcia:m0149cC1ABf06pfn00fn00pa725B842DpbF1EFEE84pc0877B627pd0000000030 31The hex value after "pa" is the hash of product ID string 1, after "pb" for32string 2 and so on.33 34Alternatively, you can use crc32hash (see tools/pcmcia/crc32hash.c)35to determine the crc32 hash. Simply pass the string you want to evaluate36as argument to this program, e.g.:37$ tools/pcmcia/crc32hash "Dual Speed"38