[MIPS] RTLX: Harden against compiler reordering and optimization.

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RTLX communication is based on lock-free shared memory buffers.  It
happened to be working by luck so far but relies on the optimizer doing
certain optimizations but no reordering.

Fixed by inserting proper barriers in rtlx_read and rtlx_write, and careful
pointer dereferencing.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

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This commit is contained in:

Ralf Baechle 2007-03-15 17:10:16 +00:00

parent 9e34682026

commit 61dcc6f4d9

1 changed files with 24 additions and 17 deletions

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arch/mips/kernel/rtlx.c

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