From: Anatolij Gustschin <agust@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] pci: fix overflow in __pci_hose_bus_to_phys w/ large RAM
Date: Thu, 14 Aug 2014 11:44:31 +0200 [thread overview]
Message-ID: <20140814114431.09e155fb@crub> (raw)
In-Reply-To: <1407794968-32106-1-git-send-email-swarren@wwwdotorg.org>
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 at denx.de. thanks!
Anatolij
prev parent reply other threads:[~2014-08-14 9:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-11 22:09 [U-Boot] [PATCH] pci: fix overflow in __pci_hose_bus_to_phys w/ large RAM Stephen Warren
2014-08-14 9:44 ` Anatolij Gustschin [this message]
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