Message ID | 1407794968-32106-1-git-send-email-swarren@wwwdotorg.org |
---|---|
State | Accepted |
Delegated to: | Anatolij Gustschin |
Headers | show |
On Mon, 11 Aug 2014 16:09:28 -0600 Stephen Warren <swarren@wwwdotorg.org> wrote: > From: Stephen Warren <swarren@nvidia.com> > > If a 32-bit system has 2GB of RAM, and the base address of that RAM is > 2GB, then start+size will overflow a 32-bit value (to a value of 0). > > To avoid such an overflow, convert __pci_hose_bus_to_phys() to calculate > the offset of a bus address into a PCI region, rather than comparing a > bus address against the end of a PCI region. > > Signed-off-by: Stephen Warren <swarren@nvidia.com> > --- > drivers/pci/pci.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) applied to u-boot-staging/agust@denx.de. thanks! Anatolij
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index ed113bf4022f..4fd9c532b3fb 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -323,7 +323,7 @@ int __pci_hose_bus_to_phys(struct pci_controller *hose, continue; if (bus_addr >= res->bus_start && - bus_addr < res->bus_start + res->size) { + (bus_addr - res->bus_start) < res->size) { *pa = (bus_addr - res->bus_start + res->phys_start); return 0; }