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17 May 2024, 09:02:56 UTC
Revision 5df9d11be46a9f704208644a1e7f13c6104ecff2 authored by Kevin D. Kissell on 10 November 2009, 19:45:46 UTC, committed by Ralf Baechle on 13 November 2009, 17:10:38 UTC 
MIPS: SMTC: Fix lockup in smtc_distribute_timer
 
1. At the end of smtc_distribute_timer, nextstamp is valid and has already
   passed so we goto repeat.
2. Nothing updates nextstamp (only updated if the timeout is in the future
   And we just decided it is in the past)
3. At the end nextstamp still has the same value so it is still valid and
   in the past.
4. This repeats until read_c0_count has a value which causes nextstamp to
   be in the future.

Reported and initial patch and testing  by Mikael Starvik
<mikael.starvik@axis.com>.

Signed-off-by: Kevin D. Kissell <kevink@paralogos.com>
Cc: Mikael Starvik <mikael.starvik@axis.com>
Cc: linux-mips@linux-mips.org
Cc: Jesper Nilsson <Jesper.Nilsson@axis.com>
Patchwork: http://patchwork.linux-mips.org/patch/621/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
1 parent 1b12a9c
History
Tip revision: 5df9d11be46a9f704208644a1e7f13c6104ecff2 authored by Kevin D. Kissell on 10 November 2009, 19:45:46 UTC
MIPS: SMTC: Fix lockup in smtc_distribute_timer
Tip revision: 5df9d11
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