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| author |   Robin Getz <robin.getz@analog.com> | 2007-10-29 18:14:15 +0800 |
|---|---|---|
| committer |   Bryan Wu <bryan.wu@analog.com> | 2007-10-29 18:14:15 +0800 |
| commit | aa770aa790f3a5f3ff568388d02aea2ef78773ec (patch) | |
| tree | c100fc10a4cdbd9bc0104846795babcad915dd71 /arch/blackfin/kernel/asm-offsets.c | |
| parent | Blackfin arch: fix bug: tell users if the kernel is recovering from a fault condition (diff) | |
| download | linux-dev-aa770aa790f3a5f3ff568388d02aea2ef78773ec.tar.xz linux-dev-aa770aa790f3a5f3ff568388d02aea2ef78773ec.zip | |
Blackfin arch: Fix random crash issue found by Michael.
This is fixes a problem where we could jump to the wrong address. By
doing a "p0 = reti; jump (p0)". If a different, higher level interrupt
came in, just before, rather than returning to the calling function, we
would return to a random place in the kernel.
This very elegant fix from Bernd grabs the return location off the
stack, and places it into P0, so when we do a return, it goes to the
correct place.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Diffstat (limited to 'arch/blackfin/kernel/asm-offsets.c')
0 files changed, 0 insertions, 0 deletions