Adding the same item to a given linked list more than once is guaranteed
to break and corrupt the list.  This is however what we do in dmi_scan
since commit 
		
	
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			||
|---|---|---|
| .. | ||
| dcdbas.c | ||
| dcdbas.h | ||
| dell_rbu.c | ||
| dmi-id.c | ||
| dmi_scan.c | ||
| edd.c | ||
| efivars.c | ||
| Kconfig | ||
| Makefile | ||
| pcdp.c | ||
| pcdp.h | ||