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Blackfin arch: add BUG_ON() checks to make sure we dont overflow the cplb tables 

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
This commit is contained in:
Mike Frysinger 2008-11-18 17:48:21 +08:00 committed by Bryan Wu
parent 8624991187
commit dce783c5e4
1 changed files with 10 additions and 1 deletions
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11
arch/blackfin/kernel/cplb-nompu/cplbinit.c
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@ -420,8 +420,17 @@ void __init generate_cplb_tables_cpu(unsigned int cpu)
}
}
/* close tables */
/* make sure we locked the kernel start */
BUG_ON(cplb.init_i.pos < 2 + cplb_data[ZERO_P].valid);
BUG_ON(cplb.init_d.pos < 1 + cplb_data[ZERO_P].valid + cplb_data[L1D_MEM].valid);
/* make sure we didnt overflow the table */
BUG_ON(cplb.init_i.size <= cplb.init_i.pos);
BUG_ON(cplb.init_d.size <= cplb.init_d.pos);
BUG_ON(cplb.switch_i.size <= cplb.switch_i.pos);
BUG_ON(cplb.switch_d.size <= cplb.switch_d.pos);
/* close tables */
close_cplbtab(&cplb.init_i);
close_cplbtab(&cplb.init_d);