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authorAnton Blanchard <anton@samba.org>2011-11-14 12:55:47 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-11-16 14:47:54 +1100
commit6d1e2c6c1a0b800473db4df8595c95745be548ea (patch)
treecfd29b7c7ca3d50f23070b31e2b3093112286a2b /arch/powerpc/kernel
parentbbc24a25e29136a56cf5015ef23eb2c2e8828023 (diff)
powerpc: panic if we can't instantiate RTAS
I had to debug a strange situation where all manner of things were failing. SMT threads, storage and network were all completely broken. The root cause was we couldn't find enough memory to instantiate RTAS - this was a network install so the initrd was huge. Instead of limping along and failing in mysterious ways we should just panic up front if RTAS exists and we can't allocate space for it. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r--arch/powerpc/kernel/prom_init.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index b4fa6612749..cc584865b3d 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -1579,10 +1579,8 @@ static void __init prom_instantiate_rtas(void)
return;
base = alloc_down(size, PAGE_SIZE, 0);
- if (base == 0) {
- prom_printf("RTAS allocation failed !\n");
- return;
- }
+ if (base == 0)
+ prom_panic("Could not allocate memory for RTAS\n");
rtas_inst = call_prom("open", 1, 1, ADDR("/rtas"));
if (!IHANDLE_VALID(rtas_inst)) {