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hw/omap_intc.c: Avoid crash on access to nonexistent banked registers 

Avoid a crash due to null pointer dereference if a guest attempts
to access banked registers for a nonexistent bank. Spotted by
Coverity (see bug 887883).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Peter Maydell 2011-11-09 18:45:38 +00:00 committed by Anthony Liguori
parent 1bbd1592c8
commit 096685fc2a
1 changed files with 6 additions and 0 deletions
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6
hw/omap_intc.c
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@ -398,6 +398,9 @@ static uint64_t omap2_inth_read(void *opaque, target_phys_addr_t addr,
if (bank_no < s->nbanks) {
offset &= ~0x60;
bank = &s->bank[bank_no];
} else {
OMAP_BAD_REG(addr);
return 0;
}
}
@ -476,6 +479,9 @@ static void omap2_inth_write(void *opaque, target_phys_addr_t addr,
if (bank_no < s->nbanks) {
offset &= ~0x60;
bank = &s->bank[bank_no];
} else {
OMAP_BAD_REG(addr);
return;
}
}