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Kevin Cernekee authored
__earlycon_of_table_sentinel.compatible is a char[128], not a pointer, so it will never be NULL. Checking it against NULL causes the match loop to run past the end of the array, and eventually match a bogus entry, under the following conditions: - Kernel command line specifies "earlycon" with no parameters - DT has a stdout-path pointing to a UART node - The UART driver doesn't use OF_EARLYCON_DECLARE (or maybe the console driver is compiled out) Fix this by checking to see if match->compatible is a non-empty string. Signed-off-by:
Kevin Cernekee <cernekee@gmail.com> Cc: <stable@vger.kernel.org> # 3.16+ Signed-off-by:
Rob Herring <robh@kernel.org>
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