[PATCH] natsemi: fix MMIO for PPC 44x platforms
Jeff Garzik
jgarzik at pobox.com
Thu Apr 17 10:53:59 EST 2008
Sergei Shtylyov wrote:
> The driver stores the PCI resource address into 'unsigned long' variable before
> calling ioremap() on it. This warrants a kernel oops when the registers are
> accessed on PPC 44x platforms which (being 32-bit) have PCI memory space mapped
> beyond 4 GB.
>
> The arch/ppc/ kernel has a fixup in ioremap() that creates an illusion of the
> PCI memory resources are mapped below 4 GB, but arch/powerpc/ code got rid of
> this trick, having instead CONFIG_RESOURCES_64BIT enabled.
>
> Signed-off-by: Sergei Shtylyov <sshtylyov at ru.mvista.com>
>
> ---
> Reposting the patch with the typecast, log, and summary corrected.
> This is the same issue as the one that has been recently addressed by commits
> 3c34ac36ac1084e571ef9b6fb1d6a5b10ccc1fd0 (e1000: Fix for 32 bits platforms with
> 64 bits resources) and c976816b6e901341ec3c4653147316c15549a1c4 (siimage: fix
> kernel oops on PPC 44x). The patch has only been compile tested though...
>
> drivers/net/natsemi.c | 10 ++++++----
> 1 files changed, 6 insertions(+), 4 deletions(-)
applied
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