[POWERPC] spufs: Don't return -ENOSYS as extra notes size if spufs is not loaded
authorMichael Ellerman <michael@ellerman.id.au>
Wed, 19 Sep 2007 04:38:12 +0000 (14:38 +1000)
committerPaul Mackerras <paulus@samba.org>
Wed, 19 Sep 2007 05:12:18 +0000 (15:12 +1000)
commitc1a72173ab156306666cb531f891f32e4e21d592
tree0bab92498bec28507bcc12e88434ce408e90318d
parent59000b53c7ea07531018b6cf1f5fcd21e881867a
[POWERPC] spufs: Don't return -ENOSYS as extra notes size if spufs is not loaded

Because the SPU coredump code might be built as part of a module (spufs),
we have a stub which is called by the coredump code, this routine then calls
into spufs if it's loaded.

Unfortunately the stub returns -ENOSYS if spufs is not loaded, which is
interpreted by the coredump code as an extra note size of -38 bytes. This
leads to a corrupt core dump.

If spufs is not loaded there will be no SPU ELF notes to write, and so the
extra notes size will be == 0.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
arch/powerpc/platforms/cell/spu_coredump.c