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authorJohn Crispin <john@openwrt.org>2016-04-09 10:26:37 +0000
committerJohn Crispin <john@openwrt.org>2016-04-09 10:26:37 +0000
commit2cba297ea064df58259f2b4dafbcdd05291d38b5 (patch)
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parent240ed52317145dfa8863dc044338e34b8dc5b4d7 (diff)
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ar71xx: fix nondeterministic hangs during bootconsole/console handover
Reconfiguring the UART when the FIFO is not empty may cause the boot to hang. This hang is extremely suspectible to timing differences; recompiling the kernel with the same configuration, but different UTS_VERSION timestamps can yield images that hang more or less often. Sometimes images are produced that hang reproducibly. This patch should also make it into one of the next linux-stable releases, but it's better to get this fixed as soon as possible. Fixes #21773, #21857. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> SVN-Revision: 49156
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