thunderbolt: Do not try to read UID if DROM offset is read as 0
At least Falcon Ridge when in host mode does not have any kind of DROM available and reading DROM offset returns 0 for these. Do not try to read DROM any further in that case. Signed-off-by:Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by:
Yehezkel Bernat <yehezkel.bernat@intel.com> Reviewed-by:
Michael Jamet <michael.jamet@intel.com> Reviewed-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
Andreas Noever <andreas.noever@gmail.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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08a5e4ce
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