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authorDavid S. Miller <davem@bnsf.davemloft.net>2007-10-29 00:36:09 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-31 15:30:52 -0700
commit7e5766fa9431602ef0e56ceae900d0cce3a78b96 (patch)
tree503f4ee5a97cabaa066bedcb8891b45e253e5128 /arch/sparc64
parent099d575aaf3dcf4c9c1e0b53c7b17c5faddb1b59 (diff)
[SPARC64]: Fix build failure when CONFIG_BUG is disabled.
When CONFIG_BUG is turned off, the standard trick of: switch (x) { case X: ... case Y: ... default: BUG(); }; to mark impossible cases does not work because BUG() evalutes to nothing and thus GCC just sees a fallthrough code path. Add an explicit KERN_ERR log message and a do_exit() to trap this case. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64')
-rw-r--r--arch/sparc64/mm/tsb.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/sparc64/mm/tsb.c b/arch/sparc64/mm/tsb.c
index 7ff0a02f581..a3e6e4b635b 100644
--- a/arch/sparc64/mm/tsb.c
+++ b/arch/sparc64/mm/tsb.c
@@ -182,7 +182,9 @@ static void setup_tsb_params(struct mm_struct *mm, unsigned long tsb_idx, unsign
break;
default:
- BUG();
+ printk(KERN_ERR "TSB[%s:%d]: Impossible TSB size %lu, killing process.\n",
+ current->comm, current->pid, tsb_bytes);
+ do_exit(SIGSEGV);
};
tte |= pte_sz_bits(page_sz);