Commit 7e5766fa authored Oct 29, 2007 by David S. Miller Committed by David S. Miller Oct 31, 2007

[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>

parent 099d575a

arch/sparc64/mm/tsb.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -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);

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