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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2014-01-13 09:49:17 +1100
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2014-01-13 09:49:17 +1100
commit10348f5976830e5d8f74e8abb04a9a057a5e8478 (patch)
treee1a0c5e5a9abe98f3799126c1b45333030024b33 /kernel/test_kprobes.c
parentf991db1cf1bdca43675b5d2df0af991719727029 (diff)
powerpc: Check return value of instance-to-package OF call
On PA-Semi firmware, the instance-to-package callback doesn't seem to be implemented. We didn't check for error, however, thus subsequently passed the -1 value returned into stdout_node to thins like prom_getprop etc... Thus caused the firmware to load values around 0 (physical) internally as node structures. It somewhat "worked" as long as we had a NULL in the right place (address 8) at the beginning of the kernel, we didn't "see" the bug. But commit 5c0484e25ec03243d4c2f2d4416d4a13efc77f6a "powerpc: Endian safe trampoline" changed the kernel entry point causing that old bug to now cause a crash early during boot. This fixes booting on PA-Semi board by properly checking the return value from instance-to-package. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Tested-by: Olof Johansson <olof@lixom.net> ---
Diffstat (limited to 'kernel/test_kprobes.c')
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