[PATCH] add documentation about the BUS key being optional for the CALLOUT rule.
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udev.8
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udev.8
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@ -106,7 +106,10 @@ The line format is:
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where valid methods with corresponding keys are:
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where valid methods with corresponding keys are:
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.TP
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.TP
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.B CALLOUT
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.B CALLOUT
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calling external program, that returns a string to match
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calling external program, that returns a string to match. The
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.BR BUS
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key is optional, but if specified, the sysfs device bus must be able to be
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detemined by a "device" symlink.
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.br
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.br
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.RB "keys: " BUS ", " PROGRAM ", " ID
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.RB "keys: " BUS ", " PROGRAM ", " ID
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.TP
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.TP
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