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-Matching of PCMCIA devices to drivers is done using one or more of the
-- manufactor ID
-- card ID
-- product ID strings _and_ hashes of these strings
-- function ID
-- device function (actual and pseudo)
-You should use the helpers in include/pcmcia/device_id.h for generating the
-struct pcmcia_device_id entries which match devices to drivers.
-If you want to match product ID strings, you also need to pass the crc32
-hashes of the string to the macro, e.g. if you want to match the product ID
-string 1, you need to use
-If the hash is incorrect, the kernel will inform you about this in "dmesg"
-upon module initialization, and tell you of the correct hash.
-You can determine the hash of the product ID strings by catting the file
-"modalias" in the sysfs directory of the PCMCIA device. It generates a string
-in the following form:
-The hex value after "pa" is the hash of product ID string 1, after "pb" for
-string 2 and so on.
-Alternatively, you can use crc32hash (see Documentation/pcmcia/crc32hash.c)
-to determine the crc32 hash. Simply pass the string you want to evaluate
-as argument to this program, e.g.:
-$ ./crc32hash "Dual Speed"