dmi_scan: add comments on dmi_present() and the loop in dmi_scan_machine()
My previous refactoring in commit 79bae42d ("dmi_scan: refactor dmi_scan_machine(), {smbios,dmi}_present()") resulted in slightly tricky code (though I think it's more elegant). Explain what it's doing. Signed-off-by: NBen Hutchings <ben@decadent.org.uk> Cc: Zhenzhong Duan <zhenzhong.duan@oracle.com> Cc: Jean Delvare <jdelvare@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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