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hw/pci/pci_host.c: Avoid shifting left into sign bit 

Add U suffix to avoid undefined behaviour.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Peter Maydell 2014-03-17 16:00:32 +00:00 committed by Michael Tokarev
parent 6d55574a65
commit ac43fa508c
1 changed files with 2 additions and 1 deletions
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3
hw/pci/pci_host.c
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@ -142,8 +142,9 @@ static uint64_t pci_host_data_read(void *opaque,
{
PCIHostState *s = opaque;
uint32_t val;
if (!(s->config_reg & (1 << 31)))
if (!(s->config_reg & (1U << 31))) {
return 0xffffffff;
}
val = pci_data_read(s->bus, s->config_reg | (addr & 3), len);
PCI_DPRINTF("read addr " TARGET_FMT_plx " len %d val %x\n",
addr, len, val);