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authorWilson Callan <wcallan@savantav.com>2008-05-01 12:16:28 +1000
committerLinus Torvalds <torvalds@linux-foundation.org>2008-05-01 08:08:35 -0700
commit2d7f16d6d12682c41fb287ea8261df8e4679f638 (patch)
treec9e8bce26b85ec9f4790e0f18baaa24c8f6d8f38 /arch/m68knommu/platform
parent10ed2195bb8aef4358223f07bb00e8cf9b278bf2 (diff)
downloadlinux-linaro-2d7f16d6d12682c41fb287ea8261df8e4679f638.tar.gz
m68knommu: fix signal handling return path
The return from software signal handling pushes code on the stack that system calls to the kernels cleanup code. This is borrowed directly from the m68k linux signal handler. The rt signal case is not quite right for the restricted instruction set of the ColdFire parts. And neither the normal signal case or rt signal case properly flushes/pushes the appropriate cache lines. Rework the return path to just call back through some code fragments in the kernel proper (with no MMU in the way we can do this). No cache problems, and less code overall. Original patch submitted by Wilson Callan <wcallan@savantav.com> Greg fixed the rt signal return path to use the proper system call Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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